Re: automatically removing commercials from recorded movies
On Sun, Jul 04, 2010 at 04:34:43PM +0200, lee wrote: Hi, what do you use to automatically remove commercials from movies recorded with a TV card? I know mythtv can do it, but I don't like mythtv. Personally, I'd just use MythTV. But if you want to do it yourself, avidemux has a next black frame button. I know that's one of the methods MythTV uses to detect commercials. This might get you started. And if avidemux has this feature, mplayer/mencoder probably has it too. -Rob -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100704152140.gb26...@aurora.owens.net
Re: automatically removing commercials from recorded movies
On Sun, Jul 04, 2010 at 11:21:40AM -0400, Rob Owens wrote: On Sun, Jul 04, 2010 at 04:34:43PM +0200, lee wrote: Hi, what do you use to automatically remove commercials from movies recorded with a TV card? I know mythtv can do it, but I don't like mythtv. Personally, I'd just use MythTV. But if you want to do it yourself, avidemux has a next black frame button. I know that's one of the methods MythTV uses to detect commercials. This might get you started. The problem with avidemux is that it is unable to keep the sound synchronized with the movie. So I'm using dvbcut which doesn't have this problem. But it's tedious to cut out all the commercials manually ... And if avidemux has this feature, mplayer/mencoder probably has it too. Hm, any idea how to make use of that? I couldn't find anything to that in the manpage. It has even been impossible to create a channels.conf for mplayer ... -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100704154202.gf12...@yun.yagibdah.de
Re: automatically removing commercials from recorded movies
On Sun, Jul 04, 2010 at 05:42:02PM +0200, lee wrote: On Sun, Jul 04, 2010 at 11:21:40AM -0400, Rob Owens wrote: On Sun, Jul 04, 2010 at 04:34:43PM +0200, lee wrote: Hi, what do you use to automatically remove commercials from movies recorded with a TV card? I know mythtv can do it, but I don't like mythtv. Personally, I'd just use MythTV. But if you want to do it yourself, avidemux has a next black frame button. I know that's one of the methods MythTV uses to detect commercials. This might get you started. The problem with avidemux is that it is unable to keep the sound synchronized with the movie. So I'm using dvbcut which doesn't have this problem. But it's tedious to cut out all the commercials manually ... Yeah, I've had that trouble before. MythTV runs a program called mythcommflag. Maybe you could look up the source or just get it to run standalone, without installing MythTV. And if avidemux has this feature, mplayer/mencoder probably has it too. Hm, any idea how to make use of that? I couldn't find anything to that in the manpage. It has even been impossible to create a channels.conf for mplayer ... This was just a guess, because I know avidemux is based on a lot of mencoder code. I just tried mplayer -vf blackframe myfile and it looks like it might have output a list of frames that are black. I'm not 100% sure what I'm looking at here, to be honest. -Rob -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100704170343.ga27...@aurora.owens.net
Re: automatically removing commercials from recorded movies
On Sun, Jul 04, 2010 at 01:03:43PM -0400, Rob Owens wrote: MythTV runs a program called mythcommflag. Maybe you could look up the source or just get it to run standalone, without installing MythTV. As far as I understood, it works by creating some sort of index, giving something like frame numbers telling other components of mythtv to skip commercials or to cut them out. I never managed to get mythtv to actually cut out commercials and was only able to skip them during viewing. I just tried mplayer -vf blackframe myfile and it looks like it might have output a list of frames that are black. I'm not 100% sure what I'm looking at here, to be honest. blackframe[=amount:threshold] Detect frames that are (almost) completely black. Can be useful to detect chapter transitions or commercials. Output lines consist of the frame number of the detected frame, the percentage of blackness, the frame type and the frame number of the last encountered keyframe. amount Percentage of the pixels that have to be below the threshold (default: 98). threshold Threshold below which a pixel value is considered black (default: 32). H ... Could be useful, but it just plays the movie. The manpage of mplayer is pretty much unreadable, so I couldn't figure out how to only filter the file and have the frame numbers printed. And then, when I have such numbers, what do I do with them other than entering them into dvbcut? -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100704185809.gl12...@yun.yagibdah.de
Re: automatically removing commercials from recorded movies
On Sun, Jul 04, 2010 at 08:58:09PM +0200, lee wrote: On Sun, Jul 04, 2010 at 01:03:43PM -0400, Rob Owens wrote: MythTV runs a program called mythcommflag. Maybe you could look up the source or just get it to run standalone, without installing MythTV. As far as I understood, it works by creating some sort of index, giving something like frame numbers telling other components of mythtv to skip commercials or to cut them out. I never managed to get mythtv to actually cut out commercials and was only able to skip them during viewing. Look into nuvexport. It comes with MythTV. I've never gotten it to work (but I didn't try all that hard), but it's supposed to be able to export to the format of your choice and remove the commercials that have been flagged by mythcommflag. Of course, this might require the myth database, which is getting awfully close to a full-fledged MythTV system. I just tried mplayer -vf blackframe myfile and it looks like it might have output a list of frames that are black. I'm not 100% sure what I'm looking at here, to be honest. blackframe[=amount:threshold] Detect frames that are (almost) completely black. Can be useful to detect chapter transitions or commercials. Output lines consist of the frame number of the detected frame, the percentage of blackness, the frame type and the frame number of the last encountered keyframe. amount Percentage of the pixels that have to be below the threshold (default: 98). threshold Threshold below which a pixel value is considered black (default: 32). H ... Could be useful, but it just plays the movie. The manpage of mplayer is pretty much unreadable, so I couldn't figure out how to only filter the file and have the frame numbers printed. And then, when I have such numbers, what do I do with them other than entering them into dvbcut? I don't know. I was hoping you might! -Rob -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100704214053.ga29...@aurora.owens.net
