Re: [PATCH] Re: [mythtv-users] How well does commercial detection work?
Fixed it myself :) The patch is attached and it replaces the previous patch and addresses all four issues. 1) in strict mode - treat frames as blank only if logo is absent 2) more fixes for the long long issue 3) fix for white frames triggering commercials 4) do not detect commercials less than 60 sec long, in the middle of a show PS I also highly recommend changing the default max and min comm break lengths -#define MIN_COMM_BREAK_LENGTH 60 -#define MAX_COMM_BREAK_LENGTH 485 +#define MIN_COMM_BREAK_LENGTH 55 +#define MAX_COMM_BREAK_LENGTH 335 The combination of the above changes seems to detect at 99% accuracy with no false positives so far for me. PPS On Monday 11 April 2005 11:07 pm, Risto Treksler wrote: 1) I DO NOT ignore logos in blank frames in STRICT mode what I meant is that i do not ignore the logo area in strict mode in effect i do ignore the logo :) commercial_skip.updated.diff.bz2 Description: BZip2 compressed data ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [PATCH] Re: [mythtv-users] How well does commercial detection work?
Hmm, I sent this last night but it never showed up on the list, So I am resending ... Fixed it myself :) The patch is attached and it replaces the previous patch and addresses all four issues. 1) in strict mode - treat frames as blank only if logo is absent 2) more fixes for the long long issue 3) fix for white frames triggering commercials 4) do not detect commercials less than 60 sec long, in the middle of a show PS I also highly recommend changing the default max and min comm break lengths -#define MIN_COMM_BREAK_LENGTH 60 -#define MAX_COMM_BREAK_LENGTH 485 +#define MIN_COMM_BREAK_LENGTH 55 +#define MAX_COMM_BREAK_LENGTH 335 The combination of the above changes seems to detect at 99% accuracy with no false positives so far for me. PPS On Monday 11 April 2005 11:07 pm, Risto Treksler wrote: 1) I DO NOT ignore logos in blank frames in STRICT mode what I meant is that i do not ignore the logo area in strict mode in effect i do ignore the logo :) commercial_skip.updated.diff.bz2 Description: BZip2 compressed data ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Hi, downloaded todays CVS and reflagged it detected and flagged an obviously false commercial of just 8 frames long white frames like those in explosions and in scene transitions in Cold Case also trigger false positives every time 2005-04-11 14:31:23.170 Final Commercial Break Map 2005-04-11 14:31:23.170 --- 2005-04-11 14:31:23.170 d : 7639 (00:04:00.04) (14) 2005-04-11 14:31:23.171 d : 7646 (00:05:00.04) (14) 2005-04-11 14:31:23.171 d : 102549 (00:04:00.56) (58) 2005-04-11 14:31:23.171 d : 107739 (00:05:00.59) (51) 2005-04-11 14:31:23.171 --- 2 On Sunday 03 April 2005 03:56 pm, Chris Pinkham wrote: I send this to you directly. From the relevant portions I can see it did detect the 12 second and ~0 second break again. If I read it right, that's at frame 18625 and then at 67576. I am using the ALL detection method with strict detection enabled. 2005-04-03 12:07:33.803 18625 : 4 (00:10:20.25) (620) 2005-04-03 12:07:33.803 19014 : 5 (00:10:33.24) (633) 2005-04-03 12:07:33.804 67576 : 4 (00:37:32.16) (2252) 2005-04-03 12:07:33.804 67586 : 5 (00:37:32.26) (2252) Thanks for the debug info (although I'm not sure the whole list wanted to see the mythcommflag.out.bz2 file). :) This should be fixed in current CVS, can you update and reflag this show to see if it does it correctly now? When going from a block that looks like a commercial to a block that doesn't, I had a bug that was checking the min commercial break length against the end of the new block instead of the start of the block. This same bug caused both of these scenarios. The bug was allowing these short commercial breaks to be flagged when they shouldn't have been. If you don't want to update to current CVS, you can try the 1-line patch here: http://cvs.mythtv.org/cgi-bin/viewcvs.cgi/mythtv/libs/libmythtv/commercial_ skip.cpp?r1=1.45r2=1.46 -- Risto Treksler Elkhorn Lodge Banff, Alberta, Canada ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
downloaded todays CVS and reflagged it detected and flagged an obviously false commercial of just 8 frames long white frames like those in explosions and in scene transitions in Cold Case also trigger false positives every time If you use the same instructions I gave the others earlier in this thread and email me (privately) the debug output, it might help me find and fix this. 2005-04-11 14:31:23.170 Final Commercial Break Map 2005-04-11 14:31:23.170 --- 2005-04-11 14:31:23.170 d : 7639 (00:04:00.04) (14) 2005-04-11 14:31:23.171 d : 7646 (00:05:00.04) (14) 2005-04-11 14:31:23.171 d : 102549 (00:04:00.56) (58) 2005-04-11 14:31:23.171 d : 107739 (00:05:00.59) (51) 2005-04-11 14:31:23.171 --- On second thought, something looks plain weird about this output anyway. The output is all weird. Have you done a make distclean lately? If not, can you do that then remake and rerun flagging and see if you get the same results. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[PATCH] Re: [mythtv-users] How well does commercial detection work?
Hi, I haven't figured out why the minimum length is still not being honoured and so I am going to privately send you the full debug output from a couple of such shows NOTE: I think it's OK to have commercials shorter than 60sec right in the beginning of the show!! these are detected fine all the time and should continue to be detected as is however there shouldn't be any really short commercial sections in the middle of the show, but it's flagging them nonetheless - (using method all with strict checking enabled) ALSO here's a patch that fixes a few things 1) I DO NOT ignore logos in blank frames in STRICT mode - this alone has eliminated virtually all false positives - it even works reasonably well with shows that leave the logo up i end up having to watch the first or the last commercial, but that's ok b/c there are no false positives. (There has got to be a way to: ONLY ignore these logos if there are no completely blank frames at all in the show) 2) fix for the messed up data in my previous post - long long vs. long - (long)it.key() probably would have done it as well - it didn't like %7lld either 3) fix for white frames triggering false positives - NOT ONLY (max - min) = blankFrameMaxDiff - BUT ALSO max some reasonable amount On Monday 11 April 2005 04:07 pm, Chris Pinkham wrote: downloaded todays CVS and reflagged it detected and flagged an obviously false commercial of just 8 frames long white frames like those in explosions and in scene transitions in Cold Case also trigger false positives every time If you use the same instructions I gave the others earlier in this thread and email me (privately) the debug output, it might help me find and fix this. 2005-04-11 14:31:23.170 Final Commercial Break Map 2005-04-11 14:31:23.170 --- 2005-04-11 14:31:23.170 d : 7639 (00:04:00.04) (14) 2005-04-11 14:31:23.171 d : 7646 (00:05:00.04) (14) 2005-04-11 14:31:23.171 d : 102549 (00:04:00.56) (58) 2005-04-11 14:31:23.171 d : 107739 (00:05:00.59) (51) 2005-04-11 14:31:23.171 --- On second thought, something looks plain weird about this output anyway. The output is all weird. Have you done a make distclean lately? If not, can you do that then remake and rerun flagging and see if you get the same results. -- Risto Treksler Elkhorn Lodge Banff, Alberta, Canada commercial_skip.diff.gz Description: GNU Zip compressed data ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I could also mention Jeopardy!. Commercial detection is flawless for my recordings of Jeopardy!, with the one exception being that it misses the end of the commercial break before Final Jeopardy. So my wife and I have to remember to NOT skip that break, or we end up at the end of the show. Just a follow-up on commercial flagging on Jeopardy! I think I've figured out why the show is consistently flagging well, but consistently dropping the 'Final Jeopardy' portion of the show. It turns out, at least on my local channel, that all of the program segments show the local station and/or network logo, EXCEPT for the Final Jeopardy portion of the program. I assume that in general if the 'All' method is used that it would not fail to catch the new segment solely on the lack on logo, but I don't know that for certain. It may just be that the commercials are 'difficult' to catch on this program and that they can't be found without the logo. If this is interesting enough I can post a comm flag log somewhere to be looked at. If not, I won't worry about it for now. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris Pinkham wrote: I wonder if it would help to apply a narrow filter to get rid of high frequency noise before testing whether a frame is blank? This might help for noisy signals without hurting things much for clean signals... I'd be interested in this. In going through my programs last night, I found that all my non-CBS recordings were about as close to 100% as I The commercial flagger calls NuppelVideoPlayer::InitVideo which calls NuppelVideoPlayer::InitFilters, so if you have any playback filters enabled, I believe they are also used for commercial flagging. You can test by setting up a playback filter to see if it makes any difference, if so, we could possibly make a different setting for flagging filters so we could apply filters for flagging but not for playback (if the user so desired). can imagine. The only one with issue was CBS and with strict detection turned on I believe it missed on break and had one short 12 second false positive and another 0 second false positive (makes me think we should have some kind of minimum bound on commercial length inclusive with strict detection to eliminate such short and obvious non-commercials). There already is a minimum length, if you are saw a 12-second or 0-second false positive, there is a bug somewhere. If you see something like this again, can you re-run mythcommflag manually on that show with the following command line (add in your own chanid/starttime of course) and gzip and email me the output: DEBUGCOMMFLAG=1 mythcommflag -v commflag --chanid CHANID --starttime STARTTIME mythcommflag.out 21 That will turn on a bunch of debug statements that I have in the code and will print out information about every frame, as well as the blocks that were defined/found and how the scores were adjusted for the blocks based on the stats for the frames in each block. This log may be huge, so you probably need to gzip or even better bzip2 the file before emailing. I send this to you directly. From the relevant portions I can see it did detect the 12 second and ~0 second break again. If I read it right, that's at frame 18625 and then at 67576. I am using the ALL detection method with strict detection enabled. 2005-04-03 12:07:33.803 Final Commercial Break Map 2005-04-03 12:07:33.803 --- 2005-04-03 12:07:33.803 0 : 4 (00:00:00.00) (0) 2005-04-03 12:07:33.8031166 : 5 (00:00:38.26) (38) 2005-04-03 12:07:33.8036601 : 4 (00:03:40.01) (220) 2005-04-03 12:07:33.803 11894 : 5 (00:06:36.14) (396) 2005-04-03 12:07:33.803 18625 : 4 (00:10:20.25) (620) 2005-04-03 12:07:33.803 19014 : 5 (00:10:33.24) (633) 2005-04-03 12:07:33.803 28951 : 4 (00:16:05.01) (965) 2005-04-03 12:07:33.803 37411 : 5 (00:20:47.01) (1247) 2005-04-03 12:07:33.804 55782 : 4 (00:30:59.12) (1859) 2005-04-03 12:07:33.804 61748 : 5 (00:34:18.08) (2058) 2005-04-03 12:07:33.804 67576 : 4 (00:37:32.16) (2252) 2005-04-03 12:07:33.804 67586 : 5 (00:37:32.26) (2252) 2005-04-03 12:07:33.804 74797 : 4 (00:41:33.07) (2493) 2005-04-03 12:07:33.804 83172 : 5 (00:46:12.12) (2772) 2005-04-03 12:07:33.804 104496 : 4 (00:58:03.06) (3483) 2005-04-03 12:07:33.804 109512 : 5 (01:00:50.12) (3650) 2005-04-03 12:07:33.804 --- Kevin ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I send this to you directly. From the relevant portions I can see it did detect the 12 second and ~0 second break again. If I read it right, that's at frame 18625 and then at 67576. I am using the ALL detection method with strict detection enabled. 2005-04-03 12:07:33.803 18625 : 4 (00:10:20.25) (620) 2005-04-03 12:07:33.803 19014 : 5 (00:10:33.24) (633) 2005-04-03 12:07:33.804 67576 : 4 (00:37:32.16) (2252) 2005-04-03 12:07:33.804 67586 : 5 (00:37:32.26) (2252) Thanks for the debug info (although I'm not sure the whole list wanted to see the mythcommflag.out.bz2 file). :) This should be fixed in current CVS, can you update and reflag this show to see if it does it correctly now? When going from a block that looks like a commercial to a block that doesn't, I had a bug that was checking the min commercial break length against the end of the new block instead of the start of the block. This same bug caused both of these scenarios. The bug was allowing these short commercial breaks to be flagged when they shouldn't have been. If you don't want to update to current CVS, you can try the 1-line patch here: http://cvs.mythtv.org/cgi-bin/viewcvs.cgi/mythtv/libs/libmythtv/commercial_skip.cpp?r1=1.45r2=1.46 -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Thanks for the debug info (although I'm not sure the whole list wanted to see the mythcommflag.out.bz2 file). :) This should be fixed in current CVS, can you update and reflag this show to see if it does it correctly now? http://cvs.mythtv.org/cgi-bin/viewcvs.cgi/mythtv/libs/libmythtv/commercial_skip.cpp?r1=1.45r2=1.46 Kevin, sorry I typoed your name in the commit log. :( -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris Pinkham wrote: Thanks for the debug info (although I'm not sure the whole list wanted to see the mythcommflag.out.bz2 file). :) This should be fixed in current CVS, can you update and reflag this show to see if it does it correctly now? I checked out and reran mythcommflag and based on the debug output it did not detect those breaks this time. Thanks for the quick fix. My WAF just increased. :) I'll let this version run on next week's shows and if I encounter any missed breaks or false positives, I'll try adjusting the detection per your previous patch. BTW, any insight on the narrow filter? I looked through the filters listed on mythtv.org but didn't see one resembling that. Thanks, Kevin ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I checked out and reran mythcommflag and based on the debug output it did not detect those breaks this time. Thanks for the quick fix. My WAF just increased. :) I'll let this version run on next week's shows Great, glad it worked. Not sure how I missed that initially. BTW, any insight on the narrow filter? I looked through the filters listed on mythtv.org but didn't see one resembling that. Might work, haven't messed with filters much. If anyone wants to point me to some code or code it themeselves, we can try it. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris Pinkham [EMAIL PROTECTED] writes: BTW, any insight on the narrow filter? I looked through the filters listed on mythtv.org but didn't see one resembling that. Might work, haven't messed with filters much. If anyone wants to point me to some code or code it themeselves, we can try it. I'm *far* from an expert on this sort of thing, but all I was thinking of was using the average of each 3x3 (or larger?) block of pixels when computing the max and min brightness for the frame. This is crude, but I think just about any non-blank frame should have brightness variations on a length scale longer than this. Dan ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Dan Christensen wrote: Kevin Kuphal [EMAIL PROTECTED] writes: Chris Pinkham wrote: I'd be interested to see what you find. Are the channels you're talking about fuzzy or what? Yeah, they have a bit of a haze to them compared to my other channels. I wonder if it would help to apply a narrow filter to get rid of high frequency noise before testing whether a frame is blank? This might help for noisy signals without hurting things much for clean signals... I'd be interested in this. In going through my programs last night, I found that all my non-CBS recordings were about as close to 100% as I can imagine. The only one with issue was CBS and with strict detection turned on I believe it missed on break and had one short 12 second false positive and another 0 second false positive (makes me think we should have some kind of minimum bound on commercial length inclusive with strict detection to eliminate such short and obvious non-commercials). Anyways, if you have an example of how to apply this filter to that channel, I'd appreciate it and would love to test it's results. Kevin ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I wonder if it would help to apply a narrow filter to get rid of high frequency noise before testing whether a frame is blank? This might help for noisy signals without hurting things much for clean signals... I'd be interested in this. In going through my programs last night, I found that all my non-CBS recordings were about as close to 100% as I The commercial flagger calls NuppelVideoPlayer::InitVideo which calls NuppelVideoPlayer::InitFilters, so if you have any playback filters enabled, I believe they are also used for commercial flagging. You can test by setting up a playback filter to see if it makes any difference, if so, we could possibly make a different setting for flagging filters so we could apply filters for flagging but not for playback (if the user so desired). can imagine. The only one with issue was CBS and with strict detection turned on I believe it missed on break and had one short 12 second false positive and another 0 second false positive (makes me think we should have some kind of minimum bound on commercial length inclusive with strict detection to eliminate such short and obvious non-commercials). There already is a minimum length, if you are saw a 12-second or 0-second false positive, there is a bug somewhere. If you see something like this again, can you re-run mythcommflag manually on that show with the following command line (add in your own chanid/starttime of course) and gzip and email me the output: DEBUGCOMMFLAG=1 mythcommflag -v commflag --chanid CHANID --starttime STARTTIME mythcommflag.out 21 That will turn on a bunch of debug statements that I have in the code and will print out information about every frame, as well as the blocks that were defined/found and how the scores were adjusted for the blocks based on the stats for the frames in each block. This log may be huge, so you probably need to gzip or even better bzip2 the file before emailing. Anyways, if you have an example of how to apply this filter to that channel, I'd appreciate it and would love to test it's results. Try setting a playback filter and see if that makes any difference. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 27, 2005 12:46 PM, SpikeyGG [EMAIL PROTECTED] wrote: All, I'm wondering how well everyone else's commercial detection is working? From what I've seen it seems like it gives me the basic jist of where a commercial IS and I go in and set the breakpoints to where the commercial really starts and stops. However, I noticed from a recent recording of American Idol the breaks get further and further apart as the program continues. Here's what I've found: I have found that for whatever reason, network tv shows are the worst for commercial flagging. MythTV does not seem to have a problem at all with any of the Cable shows I record. -- Loren H. Burlingame [EMAIL PROTECTED] GPG Key ID: 0x112DCF4F Irony can be pretty ironic sometimes. -William Shatner (a.k.a. Buck Murdock) ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris Pinkham wrote: I agree, the strict option does help a lot. It's hard to be objective about it but it seems just about as good as it was when the ALL option was first introduced. I'm wondering if my picture is confusing it. My cable box produces light and dark lines that scroll up the picture constantly. Very subtle, but it might confuse the commercial scanner. Curtis Yes, wavy lines or static can play havoc with the detection. If you have a noisy signal, the blank frames won't seem blank since they may have very dark pixels and a some very light pixels so the code won't pick them up. I tried to work around this one time by assuming the frame was blank if only X% was light while the rest was dark, but that caused false positives as well like for instance a nighttime scene of people driving in a car where most of the frame is dark but there are a few light spots. It's definitely an art but getting better over time I believe. Is there a chance that those blank detection values for light and dark could be made to be read from the DB and controlled from setup? I have a couple channels that suffer from slightly poorer signal than others and the strict detection only really fails me on those poor channels. I'd love to see if minor tweaks to the numbers made a difference here but I'm not 100% sure where in the code to change them and thought maybe that's a place where configuring them in setup would help people get better results (which large disclaimers about changing the defaults affecting commflag reliability) Kevin ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Fri, Apr 01, 2005 at 12:01:42AM -0500, Chris Pinkham wrote: I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. It already does the first part, it did not allow skipping if you were at the end and there were no more commercial flagging marks after your current position. I just committed a patch to CVS to disable skipping when the last commercial flagging marker is less than 10 seconds from the end of the recording. It will instead display the At End, can not Skip message that it normally does when you are at the end of the recording and there are no more commercial flagging marks after your current position. Thanks, that sounds good, worth doing a checkout for. (I've not been checking out the last couple of weeks for fear of the giant flood of patches that got applied, I think it's now pretty stable.) I did like the other suggestion we saw here, that the OSD's display-bar be coloured or marked with the cutlist and/or commercial skip list, as well as of course the cursor and the not-yet-recorded segment. Flashing that up with the OSD on every commercial skip and other move would give a much greater sense of the commercial layout and provide a much more robust system. Misreads by the commercial skip heuristics would become obvous and less troublesome.Of course, this is a different piece of code, not nearly so simple a change as those above. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Is there a chance that those blank detection values for light and dark could be made to be read from the DB and controlled from setup? I have a couple channels that suffer from slightly poorer signal than others and the strict detection only really fails me on those poor channels. I'd love to see if minor tweaks to the numbers made a difference here but I'm not 100% sure where in the code to change them and thought maybe that's a place where configuring them in setup would help people get better results (which large disclaimers about changing the defaults affecting commflag reliability) How about an undocumented setting? :) For now, I'd rather not start making settings like this available on the setup screens because it is so easy to really screw things up by changing one or two values, so I made a new CommBlankFrameMaxDiff setting value that will be used for the blank-frame detection. Previously this was hardcoded in the blank- frame detection routine. Both the strict and non-strict blank-frame code use this value. If the difference between the max Y (as in YUV) value in a frame and the min Y value in the frame is less than this CommBlankFrameMaxDiff value (which defaults to 25), then the frame is assumed blank. The non-strict code also checks a few other things like the average brightness, maximum Y value less than a certain threshold, etc.. This is also a CommBorder setting value that determines the border width of the frame to ignore when checking for blank, scene-changes, etc.. The default CommBorder value is 20. If you want to make the strict mode a little less strict, try creating a setting in the settings table like this: insert settings ( value, data ) values ( CommBlankFrameMaxDiff, 30 ); then rerun flagging for a show. I think I found that 35 was really bad on some fo my test cases because it caused too many false positives (ie, thought the frame was blank when it wasn't), so your best bet may be trying numbers less than 35, but you can give it a shot and see. If we find that 25 is a bit too tight, the default could be bumped up, although it probably varies per card especially when using software encoding since that has both the analog - digital conversion and gives the user the ability to change the levels on this conversion. I'd be interested to see what you find. Are the channels you're talking about fuzzy or what? -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I just committed a patch to CVS to disable skipping when the last commercial flagging marker is less than 10 seconds from the end of the recording. It will instead display the At End, can not Skip message that it normally does when you are at the end of the recording and there are no more commercial flagging marks after your current position. Thanks, that sounds good, worth doing a checkout for. (I've not been checking out the last couple of weeks for fear of the giant flood of patches that got applied, I think it's now pretty stable.) Yeah, I told my wife about it tonight and it really helped the WFA go up some. :) I did like the other suggestion we saw here, that the OSD's display-bar be coloured or marked with the cutlist and/or commercial skip list, as well as of course the cursor and the not-yet-recorded segment. Flashing that up with the OSD on every commercial skip and other move would give I saved a couple posts that were talking about this and may look into it sometime if no-one else does. Might be something that might work better with the UI interface changes that are being talked about. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Also, like mentioned above, some shows will put a 5 second teaser before or after a commercial break. I know that Food Network does this alot and myth will detect it as part of the commericial only about 5% of the time. HTH. i always saw this as a feature, that these spots aren't skipped besides trying to detect spots that short will probably result in a lot of false positives, which is much much worse ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Wed, 30 Mar 2005, Chris Pinkham wrote: With the new ALL method, the Strict Commercial Detection setting wasn't being used, so I just committed a change to CVS to use it in the blank-frame detection code to allow reverting to the stricter black-frame detection that was Now that I have my system working again, I gave this a try. My impression is positive. I believe that this has helped quite a bit. I need to go back and re-flag the shows with Strict Commercial Detection turned OFF to make a proper comparison. I will let you know after I have the time to do that. Thanks. The strict code is too strict for some people, possibly because of noisy TV signals or the fact that different analog capture cards will not have the same exact output when converted to digital. I turned Strict on myself as I think the original code worked better for me on a lot of shows as well so I'll see if it helps in my case also. The strict code definitely works better for me. Not 100% perfect, but I doubt it can ever be 100%. When it does make a mistake, it is the right kind. In other words it shows a commercial, rather than skipping part of the show. After checking a dozen shows, it only wanted to skip a small part of the show twice. Great work. Thank you. John ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 31, 2005, at 3:03 PM, John Patrick Poet wrote: On Wed, 30 Mar 2005, Chris Pinkham wrote: With the new ALL method, the Strict Commercial Detection setting wasn't being used, so I just committed a change to CVS to use it in the blank-frame detection code to allow reverting to the stricter black-frame detection that was Thanks. The strict code is too strict for some people, possibly because of noisy TV signals or the fact that different analog capture cards will not have the same exact output when converted to digital. I turned Strict on myself as I think the original code worked better for me on a lot of shows as well so I'll see if it helps in my case also. The strict code definitely works better for me. Not 100% perfect, but I doubt it can ever be 100%. When it does make a mistake, it is the right kind. In other words it shows a commercial, rather than skipping part of the show. After checking a dozen shows, it only wanted to skip a small part of the show twice. Great work. Thank you. I agree, the strict option does help a lot. It's hard to be objective about it but it seems just about as good as it was when the ALL option was first introduced. I'm wondering if my picture is confusing it. My cable box produces light and dark lines that scroll up the picture constantly. Very subtle, but it might confuse the commercial scanner. Curtis ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I agree, the strict option does help a lot. It's hard to be objective about it but it seems just about as good as it was when the ALL option was first introduced. I'm wondering if my picture is confusing it. My cable box produces light and dark lines that scroll up the picture constantly. Very subtle, but it might confuse the commercial scanner. Curtis Yes, wavy lines or static can play havoc with the detection. If you have a noisy signal, the blank frames won't seem blank since they may have very dark pixels and a some very light pixels so the code won't pick them up. I tried to work around this one time by assuming the frame was blank if only X% was light while the rest was dark, but that caused false positives as well like for instance a nighttime scene of people driving in a car where most of the frame is dark but there are a few light spots. It's definitely an art but getting better over time I believe. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
It's also a little annoying when the commercials are incorrectly marked and pressing forward skips some random large value, there is no easy way to go back because where you jumped from wasn't a marked point. So you have to just manually skip back to the correct place Would it be possible to remember a temporary last jumped from position so rewinding would jump back there? See, this is one of those times when the situation described was itching the developer bad enough that he decided to go ahead and scratch it. I just added this ability to CVS. Description is in the commit log: http://www.mythtv.org/pipermail/mythtv-commits/2005-April/005558.html -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 31, 2005, at 7:57 PM, Chris Pinkham wrote: I agree, the strict option does help a lot. It's hard to be objective about it but it seems just about as good as it was when the ALL option was first introduced. I'm wondering if my picture is confusing it. My cable box produces light and dark lines that scroll up the picture constantly. Very subtle, but it might confuse the commercial scanner. Curtis Yes, wavy lines or static can play havoc with the detection. If you have a noisy signal, the blank frames won't seem blank since they may have very dark pixels and a some very light pixels so the code won't pick them up. I tried to work around this one time by assuming the frame was blank if only X% was light while the rest was dark, but that caused false positives as well like for instance a nighttime scene of people driving in a car where most of the frame is dark but there are a few light spots. It's definitely an art but getting better over time I believe. Yes, it absolutely is getting better. It's a very hard problem and you've done a great job getting it working as well as it is, even with the wavy lines... :-) Curtis ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mon, Mar 28, 2005 at 08:54:19AM -0600, Ramon Redondo wrote: Since we're talking about consistent commercial detection problems, I could also mention Jeopardy!. Commercial detection is flawless for my recordings of Jeopardy!, with the one exception being that it misses the end of the commercial break before Final Jeopardy. So my wife and I have to remember to NOT skip that break, or we end up at the end of the show. Of course this is very frustrating, as you have to say don't delete then re-watch, then seek to the place you were and find the real programming at the end. I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. It already does the first part, it did not allow skipping if you were at the end and there were no more commercial flagging marks after your current position. I just committed a patch to CVS to disable skipping when the last commercial flagging marker is less than 10 seconds from the end of the recording. It will instead display the At End, can not Skip message that it normally does when you are at the end of the recording and there are no more commercial flagging marks after your current position. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Thu, 2005-03-31 at 23:25 -0500, Chris Pinkham wrote: It's also a little annoying when the commercials are incorrectly marked and pressing forward skips some random large value, there is no easy way to go back because where you jumped from wasn't a marked point. So you have to just manually skip back to the correct place Would it be possible to remember a temporary last jumped from position so rewinding would jump back there? See, this is one of those times when the situation described was itching the developer bad enough that he decided to go ahead and scratch it. I just added this ability to CVS. Description is in the commit log: http://www.mythtv.org/pipermail/mythtv-commits/2005-April/005558.html Looks cool, thank you very much! Ian. -- Ian Campbell It's not easy, being green. -- Kermit the Frog signature.asc Description: This is a digitally signed message part ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Sun, 27 Mar 2005, Chris Pinkham wrote: Within the first week that you introduced the ALL method, detection was simply amazing. I have never seen it work so well. Then I saw a message from you saying that you had to loosen up the concept of black. After that, detection really took a hit. Ever since then it is not that much better than it was before you add the ALL method. Thanks, this is helpful, thanks. With the new ALL method, the Strict Commercial Detection setting wasn't being used, so I just committed a change to CVS to use it in the blank-frame detection code to allow reverting to the stricter black-frame detection that was put into CVS when I first added the ALL method. If you are using ALL and you don't have Strict Commercial Detection turned ON, can you try turning that ON and seeing if it helps detection for you? Now that I have my system working again, I gave this a try. My impression is positive. I believe that this has helped quite a bit. I need to go back and re-flag the shows with Strict Commercial Detection turned OFF to make a proper comparison. I will let you know after I have the time to do that. Thank you very much! John ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
With the new ALL method, the Strict Commercial Detection setting wasn't being used, so I just committed a change to CVS to use it in the blank-frame detection code to allow reverting to the stricter black-frame detection that was Now that I have my system working again, I gave this a try. My impression is positive. I believe that this has helped quite a bit. I need to go back and re-flag the shows with Strict Commercial Detection turned OFF to make a proper comparison. I will let you know after I have the time to do that. Thanks. The strict code is too strict for some people, possibly because of noisy TV signals or the fact that different analog capture cards will not have the same exact output when converted to digital. I turned Strict on myself as I think the original code worked better for me on a lot of shows as well so I'll see if it helps in my case also. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Wed, 2005-03-30 at 11:40, John Patrick Poet wrote: Now that I have my system working again, I gave this a try. My impression is positive. I believe that this has helped quite a bit. I need to go back and re-flag the shows with Strict Commercial Detection turned OFF to make a proper comparison. I will let you know after I have the time to do that. Thank you very much! John I have found that commercial detection works well for most shows. One show that appears to have serious problems however is Blind Justice. Might make a good test show to record and flag. -- Scot L. Harris [EMAIL PROTECTED] The knowledge that makes us cherish innocence makes innocence unattainable. -- Irving Howe ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I have found that commercial detection works well for most shows. One show that appears to have serious problems however is Blind Justice. Might make a good test show to record and flag. I'm already recording that, so I'll make a note to see how well detection is working on there. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Scot L. Harris wrote: I have found that commercial detection works well for most shows. One show that appears to have serious problems however is Blind Justice. You mean besides the acting, writing, overall plot, camera work and just over all being a bad show? Tom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Tom E. Craddock Jr. wrote: Scot L. Harris wrote: I have found that commercial detection works well for most shows. One show that appears to have serious problems however is Blind Justice. You mean besides the acting, writing, overall plot, camera work and just over all being a bad show? Tom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users :-D :-D :-D :-D -- Michael J. Lynch What if the hokey pokey IS what it's all about -- author unknown ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Wed, 2005-03-30 at 14:30, Tom E. Craddock Jr. wrote: Scot L. Harris wrote: I have found that commercial detection works well for most shows. One show that appears to have serious problems however is Blind Justice. You mean besides the acting, writing, overall plot, camera work and just over all being a bad show? Ah! Did not realize that the commercial skipping also checked for those items. :D I have new found appreciation for mythtv, if it is able to cutout the really bad shows and save us from ourselves. :) :) But if that was working that way I would only need about 4GB of disk space a month for the good shows. :) -- Scot L. Harris [EMAIL PROTECTED] Traceroute says that there is a routing problem in the backbone. It's not our problem. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Tue, 29 Mar 2005 14:57:52 -0500 (EST), Chris Pinkham [EMAIL PROTECTED] wrote: Can you let me know sometime if the Strict/Aggressive changes I made the other day to CVS have made an impact for you? 24 was on to the millisecond, first time since 0.16 and non-HD content that's happened. Well done.. /clap clap we'll see how the rest of the week comes out. I'm going to go back and reflag everything in my playlist. :) ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mon, 2005-03-28 at 10:34 -0800, Brad Templeton wrote: I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. It's also a little annoying when the commercials are incorrectly marked and pressing forward skips some random large value, there is no easy way to go back because where you jumped from wasn't a marked point. So you have to just manually skip back to the correct place Would it be possible to remember a temporary last jumped from position so rewinding would jump back there? Or perhaps the interface could refuse to skip breaks longer than X mins? Commercials here are rarely as long as 5 minutes for example. Or put up a prompt Commercial break is Y (longer than X) mins and have you press fwd again to really skip that far. Ian. -- Ian Campbell Whoa...I did a 'zcat /vmlinuz /dev/audio' and I think I heard God... -- mikecd on #Linux signature.asc Description: This is a digitally signed message part ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Dan Wilga wrote: At 11:27 PM -0800 3/27/05, Ajay Sharma wrote: Daily Show: Sometimes when they jump to a news clip they flash the screen white for a second that that is picked up as a start of a commercial. Interesting. The only problem I have with Daily Show is that the last commercial break (right before the Moment of Zen) is incorrectly detected as going past the MOZ, all the way to the end of the recording. I have to remember not to hit Skip when I get to this point in the show, or I end up at the You've finished watching prompt. Perhaps the one difference between you and me is the source: I watch Comedy Central on Dish Network. I'm watching it through Adelphia Cable. --Ajay ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Tue, Mar 29, 2005 at 12:13:44PM -0500, James Armstrong wrote: Ian Campbell wrote: On Mon, 2005-03-28 at 10:34 -0800, Brad Templeton wrote: I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. It's also a little annoying when the commercials are incorrectly marked and pressing forward skips some random large value, there is no easy way to go back because where you jumped from wasn't a marked point. So you have to just manually skip back to the correct place Would it be possible to remember a temporary last jumped from position so rewinding would jump back there? Or perhaps the interface could refuse to skip breaks longer than X mins? Commercials here are rarely as long as 5 minutes for example. Or put up a prompt Commercial break is Y (longer than X) mins and have you press fwd again to really skip that far. Ian. One thing that might make a usefull feature is to show the commercial detection marks on the progress bar on the osd when watching previously recorded shows. If it looked just like it does when the commercial list is loaded in the cutlist editor you would get a visual feedback and can usually tell which commercials are bad based on the position and size. That is a very good idea, though probably a lot more coding than simple mods to the action of a keystroke. The long-gap problem is harder because the skip, as you may know, skips to the next mark, be it Start or End of commercial break. Though it does know the difference so could act differentely in these cases. One could also display the cutlist in the seek bar, in a similar manner to the way it is displayed when in edit mode. But in general, the right thing is to expect the detection algorithms will fail sometimes, and to design the UI to anticipate the occasional failure and handle it with grace. I could probably code up the 'don't terminate by pressing End' feature but don't have time for the more complex one. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 27, 2005, at 6:40 PM, John Patrick Poet wrote: Chris Pinkham wrote: I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? Yes, by then, I meant when ALL was first introduced. Can you let me know sometime if the Strict/Aggressive changes I made the other day to CVS have made an impact for you? -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 29, 2005, at 12:57 PM, Chris Pinkham wrote: On Mar 27, 2005, at 6:40 PM, John Patrick Poet wrote: Chris Pinkham wrote: I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? Yes, by then, I meant when ALL was first introduced. Can you let me know sometime if the Strict/Aggressive changes I made the other day to CVS have made an impact for you? Yes, I've set the strict option on and I'll let you know how it goes. Thanks. Curtis ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Of course this is very frustrating, as you have to say don't delete then re-watch, then seek to the place you were and find the real programming at the end. I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. There are 2 things related to this that have been on my TODO list for a while but I haven't got around to them yet. The first is something like you describe above, ie, don't Skip if the place we would skip to is within about 5 seconds of the end of the program. Instead just popup a message saying we didn't skip and why. The second is the ability to remember where we skipped from, so you could hit 'Q' immediately after hitting 'Z' and 'Q' would take you back to the point you skipped from. This would be effective for maybe 2-3 seconds and the remembered position would be reset once you hit 'Q' the first time, so you could hit 'Q' another time and skip further back in the recording. The same would hold true for the reverse, hitting 'Z' immediately after an initial 'Q' would take you back to where you started at. If anyone wants to tackle these two, feel free. They are annoying but haven't bugged me enough yet to push them to the top of my TODO list, there's still a few items above them. They are fairly easy to implement though. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris (and other developers working on mythcommflag), I just wanted to let you know that one network I seem to have more problems on than others is VH1. I find that on quite a few of their Thanks, I'll see if there is something I can record off there to test with. Also, like mentioned above, some shows will put a 5 second teaser before or after a commercial break. I know that Food Network does this alot and myth will detect it as part of the commericial only about 5% of the time. HTH. Yeah, the 5-second spots don't have enough things to trigger the score code to think they are commercials right now. There are probably ways I can tweak this though. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
At 11:27 PM -0800 3/27/05, Ajay Sharma wrote: Daily Show: Sometimes when they jump to a news clip they flash the screen white for a second that that is picked up as a start of a commercial. Interesting. The only problem I have with Daily Show is that the last commercial break (right before the Moment of Zen) is incorrectly detected as going past the MOZ, all the way to the end of the recording. I have to remember not to hit Skip when I get to this point in the show, or I end up at the You've finished watching prompt. Perhaps the one difference between you and me is the source: I watch Comedy Central on Dish Network. -- Dan Wilga [EMAIL PROTECTED] Web Administrator http://www.mtholyoke.edu Mount Holyoke CollegeTel: 413-538-3027 South Hadley, MA 01075Who left the cake out in the rain? ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Since we're talking about consistent commercial detection problems, I could also mention Jeopardy!. Commercial detection is flawless for my recordings of Jeopardy!, with the one exception being that it misses the end of the commercial break before Final Jeopardy. So my wife and I have to remember to NOT skip that break, or we end up at the end of the show. But I also have to add that in my personal use, the 'All' method has been working very well in general. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 27, 2005, at 6:40 PM, John Patrick Poet wrote: Chris Pinkham wrote: I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? I am not sure who you are quoting in this message, but I will chime in. Within the first week that you introduced the ALL method, detection was simply amazing. I have never seen it work so well. Then I saw a message from you saying that you had to loosen up the concept of black. After that, detection really took a hit. Ever since then it is not that much better than it was before you add the ALL method. I almost exclusively record HD material on my HD-3000 cards. I watch *very* few non-HD shows. Yes, by then, I meant when ALL was first introduced. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mon, 28 Mar 2005 08:17:57 -0700, Curtis Stanford [EMAIL PROTECTED] wrote: On Mar 27, 2005, at 6:40 PM, John Patrick Poet wrote: Chris Pinkham wrote: I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? I am not sure who you are quoting in this message, but I will chime in. Within the first week that you introduced the ALL method, detection was simply amazing. I have never seen it work so well. Then I saw a message from you saying that you had to loosen up the concept of black. After that, detection really took a hit. Ever since then it is not that much better than it was before you add the ALL method. I almost exclusively record HD material on my HD-3000 cards. I watch *very* few non-HD shows. Yes, by then, I meant when ALL was first introduced. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users Another Daily Show note. It consistently marks the Lewis Black segment as a commercial . I suspect this is due to the segment's having a start logo that looks much different from the rest of the program. Otherwise 'ALL' with 0.17 is damn near perfect and one of my favorite features. Thank You! ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mon, Mar 28, 2005 at 08:54:19AM -0600, Ramon Redondo wrote: Since we're talking about consistent commercial detection problems, I could also mention Jeopardy!. Commercial detection is flawless for my recordings of Jeopardy!, with the one exception being that it misses the end of the commercial break before Final Jeopardy. So my wife and I have to remember to NOT skip that break, or we end up at the end of the show. Of course this is very frustrating, as you have to say don't delete then re-watch, then seek to the place you were and find the real programming at the end. I suspect a better behaviour when you hit End (Skip to next commercial mark) if there is no next mark (or the next mark is end of program) to not seek at all, giving a message like the not-flagged message. The user can choose to quit watching or hit D at that point easily enough. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris (and other developers working on mythcommflag), I know that you're aware of a few instances where certain shows can play some havoc with the flagging of commericals... Lost is my favorite show right now and it's never correct, glad to see you are testing with it. I will let you know it's getting better than it was since the begining of the season. I just wanted to let you know that one network I seem to have more problems on than others is VH1. I find that on quite a few of their shows, they'll seem to almost edit the commercials into the show in such a way that it can fool mythcommflag. Someshows will be 100% some shows will be less than 50%. Just another option for you to test. Also, like mentioned above, some shows will put a 5 second teaser before or after a commercial break. I know that Food Network does this alot and myth will detect it as part of the commericial only about 5% of the time. HTH. Thanks! Matt On Sun, 27 Mar 2005 20:20:39 -0500 (EST), Chris Pinkham [EMAIL PROTECTED] wrote: Well, this is still pre 1.0 software. I dont think flawless is going to happen any time soon. Pretty damn well? Yup, Ive got that. Only a couple HD shows get screwy, Alias and Lost off the top of my head. SD Well, I record Lost regularly and just started recording Alias a week or two ago in order to test with that also, so hopefully I'll be able to figure out what's going on with these. Don't expect anything before 0.18 though, because I don't want to make any detection changes that could make detection worse for other cases. shows are spot on except for maybe a sec or two. I have to say tho, about 90-95% of the time, commflagg works fine for me using the Blank Frame Detection. For a lot of shows, blank frame works great, probably even 100% for some shows. It has been shown to have a hard time with dark shows including the Law Order type series. I personally use the All method and have AutoSkip Off. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] How well does commercial detection work?
All, I'm wondering how well everyone else's commercial detection is working? From what I've seen it seems like it gives me the basic jist of where a commercialIS and I go in and set the breakpoints to wherethe commercialreally starts and stops. However, I noticed from a recent recording of American Idol the breaks get further and further apart as the program continues. Here's what I've found: Using default, blank frame detection. 1st commercial break Enter off by 25.13 seconds Exit off by 19.17 seconds 2nd commercial break Enter off by 28.62 seconds Exit off by 34.68 seconds 3rd commercial break Enter off by 49.70 seconds Exit off by 49.28 seconds 4th commercial break Enter off by 58.18 seconds Exit off by 91.65 seconds 5th commercial break Enter off by 81.06 seconds Exit off by 78.30 seconds Does anyone have the commercial detection working flawlessly (or is that not possible)? Thanks, -Greg ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Sunday 27 March 2005 10:46, SpikeyGG wrote: Does anyone have the commercial detection working flawlessly (or is that not possible)? Since the 0.17 release, commercial detection has been damned near flawless for me. I'm using more than just the default though. Can't remember the exact setting, but basically just turned on everything. -- Jarod Wilson [EMAIL PROTECTED] Got a question? Read this first... http://catb.org/~esr/faqs/smart-questions.html MythTV, Fedora Core ATrpms documentation: http://wilsonet.com/mythtv/ MythTV Searchable Mailing List Archive http://www.gossamer-threads.com/lists/mythtv/ pgpVERCApQVU4.pgp Description: PGP signature ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
SpikeyGG wrote: All, I'm wondering how well everyone else's commercial detection is working? From what I've seen it seems like it gives me the basic jist of where a commercial IS and I go in and set the breakpoints to where the commercial really starts and stops. However, I noticed from a recent recording of American Idol the breaks get further and further apart as the program continues. Here's what I've found: Using default, blank frame detection. Does anyone have the commercial detection working flawlessly (or is that not possible)? Thanks, -Greg Well, this is still pre 1.0 software. I dont think flawless is going to happen any time soon. Pretty damn well? Yup, Ive got that. Only a couple HD shows get screwy, Alias and Lost off the top of my head. SD shows are spot on except for maybe a sec or two. I have to say tho, about 90-95% of the time, commflagg works fine for me using the Blank Frame Detection. Tom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Sun, 2005-03-27 at 14:04, Tom E. Craddock Jr. wrote: SpikeyGG wrote: All, I'm wondering how well everyone else's commercial detection is working? From what I've seen it seems like it gives me the basic jist of where a commercial IS and I go in and set the breakpoints to where the commercial really starts and stops. However, I noticed from a recent recording of American Idol the breaks get further and further apart as the program continues. Here's what I've found: Using default, blank frame detection. Does anyone have the commercial detection working flawlessly (or is that not possible)? Thanks, -Greg Well, this is still pre 1.0 software. I dont think flawless is going to happen any time soon. Pretty damn well? Yup, Ive got that. Only a couple HD shows get screwy, Alias and Lost off the top of my head. SD shows are spot on except for maybe a sec or two. I have to say tho, about 90-95% of the time, commflagg works fine for me using the Blank Frame Detection. I have it set to use all detection modes. I can not say it is 100% but it is very very close. With only a few exceptions about the only commercials it seems to miss consistently are those sponsor bits usually at the end of a show that appear to be part of the actual show just before it rolls into the real commercials. All in all I have been very pleased with the picture quality and especially the commercial skipping feature. -- Scot L. Harris [EMAIL PROTECTED] No guts, no glory. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Sunday 27 March 2005 12:46 pm, SpikeyGG wrote: Does anyone have the commercial detection working flawlessly (or is that not possible)? Thanks, -Greg I'm using all modes of detction and I can say that it's pretty darn close to perfect especially when using the auto skip commercial option. Like someone else mentioned, those commercials that are inserted into the closing credits (usually for the station like what Sci-Fi does) aren't detected. But by that point, I'm already exiting from viewing the recording. As the saying goes, Your mileage may vary but, it sure beats the hell out of a VCR :-) -alex ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Mar 27, 2005, at 3:04 PM, Alex Cruz wrote: On Sunday 27 March 2005 12:46 pm, SpikeyGG wrote: Does anyone have the commercial detection working flawlessly (or is that not possible)? Thanks, -Greg I'm using all modes of detction and I can say that it's pretty darn close to perfect especially when using the auto skip commercial option. Like someone else mentioned, those commercials that are inserted into the closing credits (usually for the station like what Sci-Fi does) aren't detected. But by that point, I'm already exiting from viewing the recording. As the saying goes, Your mileage may vary but, it sure beats the hell out of a VCR :-) I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. Curtis ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Using default, blank frame detection. You're probably better off using the new All method. 1st commercial break Enter off by 25.13 seconds Exit off by 19.17 seconds 2nd commercial break Enter off by 28.62 seconds Exit off by 34.68 seconds 3rd commercial break Enter off by 49.70 seconds Exit off by 49.28 seconds What kind of TV cards are you using? It sounds like this could be related to the fact that some recordings have show that is recorded at one FPS while the commercials are at another FPS. This would account for the commercial markers being off more and more as you get further into the recording. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Well, this is still pre 1.0 software. I dont think flawless is going to happen any time soon. Pretty damn well? Yup, Ive got that. Only a couple HD shows get screwy, Alias and Lost off the top of my head. SD Well, I record Lost regularly and just started recording Alias a week or two ago in order to test with that also, so hopefully I'll be able to figure out what's going on with these. Don't expect anything before 0.18 though, because I don't want to make any detection changes that could make detection worse for other cases. shows are spot on except for maybe a sec or two. I have to say tho, about 90-95% of the time, commflagg works fine for me using the Blank Frame Detection. For a lot of shows, blank frame works great, probably even 100% for some shows. It has been shown to have a hard time with dark shows including the Law Order type series. I personally use the All method and have AutoSkip Off. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I have it set to use all detection modes. I can not say it is 100% but it is very very close. With only a few exceptions about the only commercials it seems to miss consistently are those sponsor bits usually at the end of a show that appear to be part of the actual show just before it rolls into the real commercials. Are you using current CVS or a release version? I made a change related to this a while back and am curious if it is still happening for some people. -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Chris Pinkham wrote: I've been using the All option since it was introduced and, I have to agree that it was MUCH better then than it is now. Must be sensitive to the type of signal or something. When is then? I am not sure who you are quoting in this message, but I will chime in. Within the first week that you introduced the ALL method, detection was simply amazing. I have never seen it work so well. Then I saw a message from you saying that you had to loosen up the concept of black. After that, detection really took a hit. Ever since then it is not that much better than it was before you add the ALL method. I almost exclusively record HD material on my HD-3000 cards. I watch *very* few non-HD shows. John ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
Within the first week that you introduced the ALL method, detection was simply amazing. I have never seen it work so well. Then I saw a message from you saying that you had to loosen up the concept of black. After that, detection really took a hit. Ever since then it is not that much better than it was before you add the ALL method. Thanks, this is helpful, thanks. With the new ALL method, the Strict Commercial Detection setting wasn't being used, so I just committed a change to CVS to use it in the blank-frame detection code to allow reverting to the stricter black-frame detection that was put into CVS when I first added the ALL method. If you are using ALL and you don't have Strict Commercial Detection turned ON, can you try turning that ON and seeing if it helps detection for you? -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
On Sun, 2005-03-27 at 20:25, Chris Pinkham wrote: I have it set to use all detection modes. I can not say it is 100% but it is very very close. With only a few exceptions about the only commercials it seems to miss consistently are those sponsor bits usually at the end of a show that appear to be part of the actual show just before it rolls into the real commercials. Are you using current CVS or a release version? I made a change related to this a while back and am curious if it is still happening for some people. I am using ATRPMS 0.17 version. -- Scot L. Harris [EMAIL PROTECTED] The early worm gets the late bird. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] How well does commercial detection work?
I'm wondering how well everyone else's commercial detection is working? I was using the ALL method because everyone was talking about how great it is. I'm not that impressed with it but it might be because I'm watching those shows that still have issues with it: Lost: Very dark at times, scene changes in the middle of the episode get caught Survivor: Good most of the time, but the it jumps around at the end during the tribal counsel part. Daily Show: Sometimes when they jump to a news clip they flash the screen white for a second that that is picked up as a start of a commercial. Earlier today I switched the commercial detection to Scene Change + Black Screen or something like that. I also took off the Auto Skip. Most of the time it's great, but leave Auto Skip turned off. --Ajay ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
