Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Yes exactly. When I'm fast fowarding (using sticky keys) mythfrontend does have slight pause and flash (in my case its green) the screen when changing aspect ratio. I assume then that the new "All" detection mode doesnt yet use this? Ash. On Thu, 20 Jan 2005 11:30:01 +, Christopher McEwan <[EMAIL PROTECTED]> wrote: > On Thu, 20 Jan 2005 10:04:34 +, Frank smith <[EMAIL PROTECTED]> wrote: > > HI I'm in the UK, Cardiff, and noticed your post on this. > > I note that channel 5 does indeed change the aspect to wide screen I > > think. > > We don't get any black bars just lost picture area which in adverts is > > OK with me! > > > > Not sure if channel 4 does this I'll take a look. > > > > Cheers > > Bob > > > > > > > Is this a physical aspect ratio change or does the frame stay the same > > > ratio and have black bars on the top/bottom? I have a sample of a UK > > > broadcast that uses the black bars and will be trying to code up something > > > to detect that transition so it can be used to determine where commercials > > > start/stop. If you mean a physical frame aspect ratio change, then I'd > > > like to detect this at some point but don't have any sample recordings > > > to test with right now (I'm in the U.S. with analog cable). > > > > > > ___ > > mythtv-users mailing list > > mythtv-users@mythtv.org > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > > > Yes, just to confirm Channel 5 does this in a lot of its programs and > I did think to myself what an excellent way this would be to skip > adverts. > > When watching it on my backend it mythfrontend actually does a > frontend change to the extent that you sometimes actually get a flash > of blue screen while its changing, I can host a clip of such an aspect > ratio change if needed as I recently recorded "Snake Hunter: 7 > Deadliest Snakes" which features the aspect change. > > -- > Regards, > > > ~CM > > > ___ > 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
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Thu, 20 Jan 2005 10:04:34 +, Frank smith <[EMAIL PROTECTED]> wrote: > HI I'm in the UK, Cardiff, and noticed your post on this. > I note that channel 5 does indeed change the aspect to wide screen I > think. > We don't get any black bars just lost picture area which in adverts is > OK with me! > > Not sure if channel 4 does this I'll take a look. > > Cheers > Bob > > > > Is this a physical aspect ratio change or does the frame stay the same > > ratio and have black bars on the top/bottom? I have a sample of a UK > > broadcast that uses the black bars and will be trying to code up something > > to detect that transition so it can be used to determine where commercials > > start/stop. If you mean a physical frame aspect ratio change, then I'd > > like to detect this at some point but don't have any sample recordings > > to test with right now (I'm in the U.S. with analog cable). > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > Yes, just to confirm Channel 5 does this in a lot of its programs and I did think to myself what an excellent way this would be to skip adverts. When watching it on my backend it mythfrontend actually does a frontend change to the extent that you sometimes actually get a flash of blue screen while its changing, I can host a clip of such an aspect ratio change if needed as I recently recorded "Snake Hunter: 7 Deadliest Snakes" which features the aspect change. -- Regards, ~CM ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
HI I'm in the UK, Cardiff, and noticed your post on this. I note that channel 5 does indeed change the aspect to wide screen I think. We don't get any black bars just lost picture area which in adverts is OK with me! Not sure if channel 4 does this I'll take a look. Cheers Bob > Is this a physical aspect ratio change or does the frame stay the same > ratio and have black bars on the top/bottom? I have a sample of a UK > broadcast that uses the black bars and will be trying to code up something > to detect that transition so it can be used to determine where commercials > start/stop. If you mean a physical frame aspect ratio change, then I'd > like to detect this at some point but don't have any sample recordings > to test with right now (I'm in the U.S. with analog cable). ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
In message <[EMAIL PROTECTED]> Andy Whitworth <[EMAIL PROTECTED]> wrote: > My TV when in 'auto' mode often switches to/from 16:9 when the ad > break appears so I guess there is a physical change ? I think this > would be a useful detection trigger to add to the list! Your TV probably switches because the set top box sees the header flag or the AFD in the digital stream and adjusts the level on pin 8 on the SCART plug to indicate the format of the content. Some set top boxes (like the Pioneer I was using most recently) don't handle AFDs properly and continue generating a 16:9 signal with black bars but because they still signal 16:9 to the TV it still looks right. Myth seems to always generate a 16:9 signal if you have set your display size to indicate that you have a 16:9 set. It just puts side bars in for 4:3 content. I believe some TVs also have modes which will look for black bars and try and zoom them out but mine doesn't do that at all. Tom -- Tom Hughes ([EMAIL PROTECTED]) http://www.compton.nu/ ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Yes, I notice this most on five. Ash. On Thu, 20 Jan 2005 08:24:04 +, Andy Whitworth <[EMAIL PROTECTED]> wrote: > My TV when in 'auto' mode often switches to/from 16:9 when the ad break > appears > so I guess there is a physical change ? I think this would be a > useful detection > trigger to add to the list! > > Andy. > > > On Thu, 20 Jan 2005 00:00:05 GMT, Tom Hughes <[EMAIL PROTECTED]> wrote: > > In message <[EMAIL PROTECTED]> > > "Chris Pinkham" <[EMAIL PROTECTED]> wrote: > > > > > > Haven't updated my cvs version yet to try the new detection, but does > > > > it also monitor for aspect ratio changes? Just noticed while watching > > > > tv yesterday quite a few channels change aspect ratio when they switch > > > > to the adverts (I'm in the UK). > > > > > > > > In this situation it could be a very accurate way for detecting ads. > > > > > > Is this a physical aspect ratio change or does the frame stay the same > > > ratio and have black bars on the top/bottom? I have a sample of a UK > > > broadcast that uses the black bars and will be trying to code up something > > > to detect that transition so it can be used to determine where commercials > > > start/stop. If you mean a physical frame aspect ratio change, then I'd > > > like to detect this at some point but don't have any sample recordings > > > to test with right now (I'm in the U.S. with analog cable). > > > > Well it would be black bars on the side of the program if anything > > rather than black bars on the top and bottom of the adverts. > > > > In a DVB-T stream there are two ways of handling aspect ratios. For > > simple 4:3 vs 16:9 it can be done with a simple flag. In that case > > then the transmitted data is always the full picture area and the > > flag tells the receiver what aspect ratio to use when displaying > > the data - the resolution doesn't change, so would be 720x576 or > > 704x576 in the UK depending on the channel. > > > > The other option is to use an AFD where a 16:9 picture is transmitted > > and if the content is 4:3 then there are black bars on each side. There > > is then an Active Format Descriptor (AFD) which indicates which part > > of the transmitted picture to display. That allows more choice of > > ratios but in the UK at least only 4:3 and 16:9 are used. > > > > Some channels use AFDs in the UK and some use the simple flag. Most > > of the AFD channels don't have adverts however, but I think there is > > one that does - certainly Five was, but it may have changed recently. > > > > I'm not sure how Myth handles those two cases however, or what you > > see in the stream when you read it back from disk. > > > > Tom > > > > -- > > Tom Hughes ([EMAIL PROTECTED]) > > http://www.compton.nu/ > > > > > > ___ > > 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 mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
My TV when in 'auto' mode often switches to/from 16:9 when the ad break appears so I guess there is a physical change ? I think this would be a useful detection trigger to add to the list! Andy. On Thu, 20 Jan 2005 00:00:05 GMT, Tom Hughes <[EMAIL PROTECTED]> wrote: > In message <[EMAIL PROTECTED]> > "Chris Pinkham" <[EMAIL PROTECTED]> wrote: > > > > Haven't updated my cvs version yet to try the new detection, but does > > > it also monitor for aspect ratio changes? Just noticed while watching > > > tv yesterday quite a few channels change aspect ratio when they switch > > > to the adverts (I'm in the UK). > > > > > > In this situation it could be a very accurate way for detecting ads. > > > > Is this a physical aspect ratio change or does the frame stay the same > > ratio and have black bars on the top/bottom? I have a sample of a UK > > broadcast that uses the black bars and will be trying to code up something > > to detect that transition so it can be used to determine where commercials > > start/stop. If you mean a physical frame aspect ratio change, then I'd > > like to detect this at some point but don't have any sample recordings > > to test with right now (I'm in the U.S. with analog cable). > > Well it would be black bars on the side of the program if anything > rather than black bars on the top and bottom of the adverts. > > In a DVB-T stream there are two ways of handling aspect ratios. For > simple 4:3 vs 16:9 it can be done with a simple flag. In that case > then the transmitted data is always the full picture area and the > flag tells the receiver what aspect ratio to use when displaying > the data - the resolution doesn't change, so would be 720x576 or > 704x576 in the UK depending on the channel. > > The other option is to use an AFD where a 16:9 picture is transmitted > and if the content is 4:3 then there are black bars on each side. There > is then an Active Format Descriptor (AFD) which indicates which part > of the transmitted picture to display. That allows more choice of > ratios but in the UK at least only 4:3 and 16:9 are used. > > Some channels use AFDs in the UK and some use the simple flag. Most > of the AFD channels don't have adverts however, but I think there is > one that does - certainly Five was, but it may have changed recently. > > I'm not sure how Myth handles those two cases however, or what you > see in the stream when you read it back from disk. > > Tom > > -- > Tom Hughes ([EMAIL PROTECTED]) > http://www.compton.nu/ > > > ___ > 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
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
In message <[EMAIL PROTECTED]> "Chris Pinkham" <[EMAIL PROTECTED]> wrote: > > Haven't updated my cvs version yet to try the new detection, but does > > it also monitor for aspect ratio changes? Just noticed while watching > > tv yesterday quite a few channels change aspect ratio when they switch > > to the adverts (I'm in the UK). > > > > In this situation it could be a very accurate way for detecting ads. > > Is this a physical aspect ratio change or does the frame stay the same > ratio and have black bars on the top/bottom? I have a sample of a UK > broadcast that uses the black bars and will be trying to code up something > to detect that transition so it can be used to determine where commercials > start/stop. If you mean a physical frame aspect ratio change, then I'd > like to detect this at some point but don't have any sample recordings > to test with right now (I'm in the U.S. with analog cable). Well it would be black bars on the side of the program if anything rather than black bars on the top and bottom of the adverts. In a DVB-T stream there are two ways of handling aspect ratios. For simple 4:3 vs 16:9 it can be done with a simple flag. In that case then the transmitted data is always the full picture area and the flag tells the receiver what aspect ratio to use when displaying the data - the resolution doesn't change, so would be 720x576 or 704x576 in the UK depending on the channel. The other option is to use an AFD where a 16:9 picture is transmitted and if the content is 4:3 then there are black bars on each side. There is then an Active Format Descriptor (AFD) which indicates which part of the transmitted picture to display. That allows more choice of ratios but in the UK at least only 4:3 and 16:9 are used. Some channels use AFDs in the UK and some use the simple flag. Most of the AFD channels don't have adverts however, but I think there is one that does - certainly Five was, but it may have changed recently. I'm not sure how Myth handles those two cases however, or what you see in the stream when you read it back from disk. Tom -- Tom Hughes ([EMAIL PROTECTED]) http://www.compton.nu/ ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
> Haven't updated my cvs version yet to try the new detection, but does > it also monitor for aspect ratio changes? Just noticed while watching > tv yesterday quite a few channels change aspect ratio when they switch > to the adverts (I'm in the UK). > > In this situation it could be a very accurate way for detecting ads. Is this a physical aspect ratio change or does the frame stay the same ratio and have black bars on the top/bottom? I have a sample of a UK broadcast that uses the black bars and will be trying to code up something to detect that transition so it can be used to determine where commercials start/stop. If you mean a physical frame aspect ratio change, then I'd like to detect this at some point but don't have any sample recordings to test with right now (I'm in the U.S. with analog cable). -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
In message <[EMAIL PROTECTED]> Ashley Bostock <[EMAIL PROTECTED]> wrote: > Haven't updated my cvs version yet to try the new detection, but does > it also monitor for aspect ratio changes? Just noticed while watching > tv yesterday quite a few channels change aspect ratio when they switch > to the adverts (I'm in the UK). In the UK any channel showing 4:3 content will switch to 16:9 for adverts - all adverts have been 16:9 for some years now. > In this situation it could be a very accurate way for detecting ads. I thought the same thing the other day as it happens. Not that there is much 4:3 content on the main channels now of course. Tom -- Tom Hughes ([EMAIL PROTECTED]) http://www.compton.nu/ ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Haven't updated my cvs version yet to try the new detection, but does it also monitor for aspect ratio changes? Just noticed while watching tv yesterday quite a few channels change aspect ratio when they switch to the adverts (I'm in the UK). In this situation it could be a very accurate way for detecting ads. Ash. On Tue, 18 Jan 2005 19:43:59 +, Robin Elvin <[EMAIL PROTECTED]> wrote: > On Monday 17 January 2005 23:28, Martin Ebourne wrote: > > On Mon, 2005-01-17 at 23:10 +1000, Paul Andreassen wrote: > > > On Mon, 2005-01-17 at 22:47, Jules Gosnell wrote: > > > > re commercial detection > > > > of course, if it were that easy, I'm sure mythtv would already do it, > > > > so... - perhaps it exists, but only on some channels ? > > > > > > The current system apparently works OK for analog recordings. My dvb-t > > > stream comes with a dotted line at the top which probably interferes > > > with detecting. > > > > I get that too. DVB-T UK. Channels have a changing dotted line at the > > top, which clearly has some binary counters in it. Can't see it on the > > tv due to overscan, but get it when I run a frontend on the laptop. > > > > Any idea what causes it? I'd assumed it was a video card thing. Maybe it > > does upset the commercial detection after all. > > > > Cheers, > > > > Martin. > > > > > > I thought it was something to do with Teletext. > > -- > Rob > ___ > 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
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Monday 17 January 2005 23:28, Martin Ebourne wrote: > On Mon, 2005-01-17 at 23:10 +1000, Paul Andreassen wrote: > > On Mon, 2005-01-17 at 22:47, Jules Gosnell wrote: > > > re commercial detection > > > of course, if it were that easy, I'm sure mythtv would already do it, > > > so... - perhaps it exists, but only on some channels ? > > > > The current system apparently works OK for analog recordings. My dvb-t > > stream comes with a dotted line at the top which probably interferes > > with detecting. > > I get that too. DVB-T UK. Channels have a changing dotted line at the > top, which clearly has some binary counters in it. Can't see it on the > tv due to overscan, but get it when I run a frontend on the laptop. > > Any idea what causes it? I'd assumed it was a video card thing. Maybe it > does upset the commercial detection after all. > > Cheers, > > Martin. > > I thought it was something to do with Teletext. -- Rob ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
> At times, it seems great (I don't skip the commercials when watching > becuase I forgot what key it is and always forget to check), but it > often comes up at the right place with a notification that there is a > 3 minute commercial or whatever. > > I would never enable it to cut commercials automagically though, as I > am sure I would regret it really quickly. > > To be short, it is prolly about 30% accurate is my guess. Instead of replying to a bunch of posts from this thread, I'm replying to a couple things in this post. There is an undocumented setting that's been in the commercial detection code for a while called CommBorder. It was originally set at 10, but I bumped it up to 20 with my latest commit. This setting controls the border around the video frame that is ignored by the commercial detection code for blank-frame, logo, and scene-change detection. I also just committed some big changes to CVS reguarding commercial detection. I added a new "all" method that I'm hoping to get some feedback on to see if it works better for people. Full changes are described in the commit log so I won't repeat them here. Here's a link to the log: http://www.mythtv.org/pipermail/mythtv-commits/2005-January/004820.html -- Chris ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
At times, it seems great (I don't skip the commercials when watching becuase I forgot what key it is and always forget to check), but it often comes up at the right place with a notification that there is a 3 minute commercial or whatever. I would never enable it to cut commercials automagically though, as I am sure I would regret it really quickly. To be short, it is prolly about 30% accurate is my guess. Dave On Tue, 18 Jan 2005 15:00:50 +1100, Phill Edwards <[EMAIL PROTECTED]> wrote: > > I seem to get a line like mark across the top of ABC recordings (I > > haven't noticed it on the commercial stations [and currently can't > > tune SBS]). I only notice it when viewing the NUV's directly as I > > crop the top couple of pixels in MythFrontend. > > > > Is this the line you are referring to Paul. If it is, you may have > > saved me some work, as it was one of the next tasks on my list of > > things to do; eliminate the line of NUV file playback. > > > > I heard that the commercial detection code was going to cut the outer > > couple of pixels to prevent this from effecting the detection > > routines. Makes no difference to us Aussies as it only appears on > > ABC, which has no ads anyway! > > Dave (or anyone else in Oz for that matter) - are you using commercial > detection in Oz? If so, how effective is it and what settings are you > using? > > Regards, > Phill > -- GMAIL is 'da bomb babyYEAH ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
> I seem to get a line like mark across the top of ABC recordings (I > haven't noticed it on the commercial stations [and currently can't > tune SBS]). I only notice it when viewing the NUV's directly as I > crop the top couple of pixels in MythFrontend. > > Is this the line you are referring to Paul. If it is, you may have > saved me some work, as it was one of the next tasks on my list of > things to do; eliminate the line of NUV file playback. > > I heard that the commercial detection code was going to cut the outer > couple of pixels to prevent this from effecting the detection > routines. Makes no difference to us Aussies as it only appears on > ABC, which has no ads anyway! Dave (or anyone else in Oz for that matter) - are you using commercial detection in Oz? If so, how effective is it and what settings are you using? Regards, Phill ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
I seem to get a line like mark across the top of ABC recordings (I haven't noticed it on the commercial stations [and currently can't tune SBS]). I only notice it when viewing the NUV's directly as I crop the top couple of pixels in MythFrontend. Is this the line you are referring to Paul. If it is, you may have saved me some work, as it was one of the next tasks on my list of things to do; eliminate the line of NUV file playback. I heard that the commercial detection code was going to cut the outer couple of pixels to prevent this from effecting the detection routines. Makes no difference to us Aussies as it only appears on ABC, which has no ads anyway! Dave > > The current system apparently works OK for analog recordings. My dvb-t > stream comes with a dotted line at the top which probably interferes > with detecting. > > > can anyone enlighten me ? > > > > thanks, > > > > > > Jules (UK/DVB-T user) > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > -- GMAIL is 'da bomb babyYEAH ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Tue, 2005-01-18 at 09:28, Martin Ebourne wrote: > I get that too. DVB-T UK. Channels have a changing dotted line at the > top, which clearly has some binary counters in it. Can't see it on the > tv due to overscan, but get it when I run a frontend on the laptop. The ones I see are unchanging. Analog tv has always had this line. It usually encodes time, close captions and teletext. > Any idea what causes it? I'd assumed it was a video card thing. Maybe it > does upset the commercial detection after all. This is part of the signal from the station. Paul ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Tue, 2005-01-18 at 09:24, Phill Edwards wrote: > > In Australia, all commercial breaks begin and end with a blank (black) > > frame. > Paul - is that true for analogue TV as well (I see you're on digital), > and are you getting good commercial detection? Mine is abysmal. What > are your commercial detection settings in your setup - I'd like to get > this working if I can. Analogue TV does have the blank frames. Some guys from the university I went to built a device to detect them. It was for VCR commercial removal. When they tried to sell it, they found that there was already a device available. I gave up on commercial detection but just realized last night that only abc and seven have the dotted line at the top, and maybe commercial detection will work for the other channels. Paul ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Mon, 2005-01-17 at 23:10 +1000, Paul Andreassen wrote: > On Mon, 2005-01-17 at 22:47, Jules Gosnell wrote: > > re commercial detection > > of course, if it were that easy, I'm sure mythtv would already do it, > > so... - perhaps it exists, but only on some channels ? > > The current system apparently works OK for analog recordings. My dvb-t > stream comes with a dotted line at the top which probably interferes > with detecting. I get that too. DVB-T UK. Channels have a changing dotted line at the top, which clearly has some binary counters in it. Can't see it on the tv due to overscan, but get it when I run a frontend on the laptop. Any idea what causes it? I'd assumed it was a video card thing. Maybe it does upset the commercial detection after all. Cheers, Martin. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
> > is it just urban folklore, or is there not some sort of specific > > 'signal' that marks the beginning/end of commercial breaks. Is there not > > a similar mechanism for marking programmes, so that instead of working > > by timeslot and hoping that the schedule is tight, a recorder can just > > wait for the signal to start/stop the recording... > > In Australia, all commercial breaks begin and end with a blank (black) > frame. Paul - is that true for analogue TV as well (I see you're on digital), and are you getting good commercial detection? Mine is abysmal. What are your commercial detection settings in your setup - I'd like to get this working if I can. Regards, Phill ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Mon, 17 Jan 2005 09:13:37 +, Andy Whitworth <[EMAIL PROTECTED]> wrote: > Hi, > > Am I correct in believing that commercial detection/skipping > doesn't work in the UK when using DVB-T ? Seems to work OK-ish for me. > When I press > the 'skip' button during an ad while watching a recording then > I get a message to the effect that no marker is found (can't > remember exact wording). When I push the skip button it jumps to the next point at which it thinks the ads have stopped. No error messages. Caveat: It's not entirely accurate and sometimes misses the end of the ad break. Luckily you can skip back :-) It is also triggered within the ad breaks a lot so it's almost as fast to hit the ffwd button a few times :-( I'm using a CVS build from around the end of Nov last year, fwiw. -- Neil Milne ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Andy Whitworth wrote: Hi, Am I correct in believing that commercial detection/skipping doesn't work in the UK when using DVB-T ? When I press the 'skip' button during an ad while watching a recording then I get a message to the effect that no marker is found (can't remember exact wording). The channel is setup as one which does have commercials. Or has anyone in UK got ad detection working using DVB-T ? Thanks, Andy. I found that ad-detection caused mythtv to crash when I enabled here - not complaining, as when it didn't crash, it didn't catch enough to make it worth while. One day, I will get a spare box, and setup a test patch to catch the debug info for this sort of thing, but atm, the WAF stops any experimentation. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Mon, 2005-01-17 at 12:47 +, Jules Gosnell wrote: > is it just urban folklore, or is there not some sort of specific > 'signal' that marks the beginning/end of commercial breaks. Is there not > a similar mechanism for marking programmes, so that instead of working > by timeslot and hoping that the schedule is tight, a recorder can just > wait for the signal to start/stop the recording... ITV (on terrestrial at least) has a little scrolling black and white "barber's pole" type thing in the top right corner just before and after the ads. I haven't seen it on BBC, C4 or Five though so I guess it is ITV specific, or it is outside the displayed picture area on the other channels... When manually marking adverts before transcoding to DVD I've noticed that the adverts are surrounded by a logo, often animated and show specific, and that it wasn't uncommon for it to fade back to the film instead of cutting with a blank frame -- I bet both of them are really tricky to detect (just a gut feeling, I know squat about image processing). Ian. -- Ian Campbell Don't look back, the lemmings are gaining on you. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Mon, 2005-01-17 at 22:47, Jules Gosnell wrote: > re commercial detection > > everything that I can google about how mythtv/mythcommflag does it seems > to indicate that we are well into the realms of image processing and AI ! AI is dead, image processing rules forever. > is it just urban folklore, or is there not some sort of specific > 'signal' that marks the beginning/end of commercial breaks. Is there not > a similar mechanism for marking programmes, so that instead of working > by timeslot and hoping that the schedule is tight, a recorder can just > wait for the signal to start/stop the recording... In Australia, all commercial breaks begin and end with a blank (black) frame. > of course, if it were that easy, I'm sure mythtv would already do it, > so... - perhaps it exists, but only on some channels ? The current system apparently works OK for analog recordings. My dvb-t stream comes with a dotted line at the top which probably interferes with detecting. > can anyone enlighten me ? > > thanks, > > > Jules (UK/DVB-T user) ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Christopher McEwan wrote: On Mon, 17 Jan 2005 21:43:53 +1100, Phill Edwards <[EMAIL PROTECTED]> wrote: I've failed to get ad-detection to work with DVB-T in the UK. I don't know why, I wouldn't have thought the mechanism that creates the nuv file would really matter that much ? ..ho-hum It's nothing to do with DVB-T though, the ad detection just isn't clever enough at the moment to find most adverts on UK TV it seems. It does find some, but not all. It also finds things which aren't ads at all so you have to be careful. The ad detection doesn't really work in Australlia on Free To air analogue TV either, but I thought I saw something about there being an improvement in CVS a few weeks ago. Regards, Phill ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users I would hazard a guess that my setup correctly detects ads about 10% of the time. Im using DVB-T in the UK also with 0.16. Hopefully there will be some improvements in the commercial detection code, until then its not a big deal to just FF ;) re commercial detection everything that I can google about how mythtv/mythcommflag does it seems to indicate that we are well into the realms of image processing and AI ! is it just urban folklore, or is there not some sort of specific 'signal' that marks the beginning/end of commercial breaks. Is there not a similar mechanism for marking programmes, so that instead of working by timeslot and hoping that the schedule is tight, a recorder can just wait for the signal to start/stop the recording... of course, if it were that easy, I'm sure mythtv would already do it, so... - perhaps it exists, but only on some channels ? can anyone enlighten me ? thanks, Jules (UK/DVB-T user) ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users -- "Open Source is a self-assembling organism. You dangle a piece of string into a super-saturated solution and a whole operating-system crystallises out around it." /** * Jules Gosnell * Partner * Core Developers Network (Europe) * *www.coredevelopers.net * * Open Source Training & Support. **/ ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
On Mon, 17 Jan 2005 21:43:53 +1100, Phill Edwards <[EMAIL PROTECTED]> wrote: > > > I've failed to get ad-detection to work with DVB-T in the UK. I don't > > > know why, I wouldn't have thought the mechanism that creates the nuv > > > file would really matter that much ? ..ho-hum > > > > It's nothing to do with DVB-T though, the ad detection just isn't > > clever enough at the moment to find most adverts on UK TV it seems. > > > > It does find some, but not all. It also finds things which aren't > > ads at all so you have to be careful. > > The ad detection doesn't really work in Australlia on Free To air > analogue TV either, but I thought I saw something about there being an > improvement in CVS a few weeks ago. > > Regards, > Phill > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > I would hazard a guess that my setup correctly detects ads about 10% of the time. Im using DVB-T in the UK also with 0.16. Hopefully there will be some improvements in the commercial detection code, until then its not a big deal to just FF ;) -- Regards, ~CM ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
> > I've failed to get ad-detection to work with DVB-T in the UK. I don't > > know why, I wouldn't have thought the mechanism that creates the nuv > > file would really matter that much ? ..ho-hum > > It's nothing to do with DVB-T though, the ad detection just isn't > clever enough at the moment to find most adverts on UK TV it seems. > > It does find some, but not all. It also finds things which aren't > ads at all so you have to be careful. The ad detection doesn't really work in Australlia on Free To air analogue TV either, but I thought I saw something about there being an improvement in CVS a few weeks ago. Regards, Phill ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
In message <[EMAIL PROTECTED]> [EMAIL PROTECTED] wrote: > I've failed to get ad-detection to work with DVB-T in the UK. I don't > know why, I wouldn't have thought the mechanism that creates the nuv > file would really matter that much ? ..ho-hum It's nothing to do with DVB-T though, the ad detection just isn't clever enough at the moment to find most adverts on UK TV it seems. It does find some, but not all. It also finds things which aren't ads at all so you have to be careful. Tom -- Tom Hughes ([EMAIL PROTECTED]) http://www.compton.nu/ ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
I've failed to get ad-detection to work with DVB-T in the UK. I don't know why, I wouldn't have thought the mechanism that creates the nuv file would really matter that much ? ..ho-hum - Ciaran On Mon, 17 Jan 2005 09:13:37 +, Andy Whitworth <[EMAIL PROTECTED]> wrote: > Hi, > > Am I correct in believing that commercial detection/skipping > doesn't work in the UK when using DVB-T ? When I press > the 'skip' button during an ad while watching a recording then > I get a message to the effect that no marker is found (can't > remember exact wording). The channel is setup as one which > does have commercials. > > Or has anyone in UK got ad detection working using DVB-T ? > > Thanks, > > Andy. > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > -- - Ciaran ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Andy Whitworth wrote: Hi, Am I correct in believing that commercial detection/skipping doesn't work in the UK when using DVB-T ? When I press the 'skip' button during an ad while watching a recording then I get a message to the effect that no marker is found (can't remember exact wording). The channel is setup as one which does have commercials. Or has anyone in UK got ad detection working using DVB-T ? I've tried all of the detection methods on most channels now, and there's nothing that really works properly. A while back I was quite hopeful that the logo detection would do the job, but it doesn't work either. A shame, since it's probably the most consistent ad marker across all the channels. (Annoyingly so, I hate logos) Turn the ad detection off and save yourself some CPU cycles/heat! J ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Skipping adverts in UK using DVB-T - supported ?
Hi, Am I correct in believing that commercial detection/skipping doesn't work in the UK when using DVB-T ? When I press the 'skip' button during an ad while watching a recording then I get a message to the effect that no marker is found (can't remember exact wording). The channel is setup as one which does have commercials. Or has anyone in UK got ad detection working using DVB-T ? Thanks, Andy. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
