Re: audio sync: Welcome to my world. It's incredibly frustrating, and only happens with 720p material. After transcode, my audio loses step with video at about the rate of 850ms/hour of programming. Very consistent, very repeatable. I have absolutely no solution. Sorry to respond with a 'meee toooo' but I'd love to hear if somebody has an answer.
Re: transcode speed: What transcode paramaters are you using? Are you resizing? I get very acceptable transcode speeds with 720p material using ffmpeg (from transcode). I can't remember the fps off the top of my head, but I think it's roughly 30fps. -- John Sturgeon <>< http://www.sturgeonfamily.com/mythtv.php On 5/28/05, Brad Templeton <[EMAIL PROTECTED]> wrote: > > Well, I've seen a number of threads about this but no clear resolution. > > Recently I've been trying to transocde a 720p MP2 file to MP4 with > a cutlist. The file is 4 hours long -- 22 gigabytes, and it has > a whopping 76 minutes of "cuttable material", so use of a cutlist > is pretty important. > > However, the result had steadily worsening audio sync, getting over > a second off eventually. I used divx bucause xvid was so slow > (4fps on a 60fps recording) that it would take at least 33 hours > to transocde even on a fast machine. That's with ffmpeg, should I > try transcode? (mencoder does not work yet). > > Even dvix took over 8 hours to transcode, but that's a touch more > tolerable. Worse, while this is 60fps, it's really 24fps underneath, > most frames are duplicates. Alas the mythtransocde | ffmpeg approach > presumably doesn't allow the encoder access to the knowledge it's just > been handed an exactly duplicate frame and shouldn't waste its time. > > To my surprise, also, while I asked for a bitrate of 7200, which should > have generated a file in the range of 9 gigabytes, I got one that > was 4 gigabytes. It is actually pretty good, video wise, though > with some obvious artifacts in smooth surfaces and a little blurring. > But I felt I was willing to spend more space on it and hopefully be > rid of those. > > > > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
