Can i somehow prevent this video/audio sync drift? I'm going back to Zero... is there a way to narrow it down?
Im done with Trial and Error... if such oldschool mail list can't help me... is there some other place where i can look? It seems People are rar with some insight and KnowHow? I started to read different things.. and somehow i feel that this whole time_base,pts/dts, keyframes has something to do with it. Is there no Bulding-Plan? Step A, Step B, Step C? http://www.ttcdas.com/products/daus_encoders/pdf/_tech_papers/tp_2010_time_stamp_video_system.pdf <http://www.ttcdas.com/products/daus_encoders/pdf/_tech_papers/tp_2010_time_stamp_video_system.pdf> http://en.wikipedia.org/wiki/MPEG_transport_stream <http://en.wikipedia.org/wiki/MPEG_transport_stream> I use the avcodec libs which comes from ffmpeg 1.2.4. What is the different between 1.2 and 2.1 ffmpeg? Because it makes such a huge jump 1.2 -> 2.0, instead 1.3,1.4,.... is it somewhere explained? Maybe i found it already and forgot it... Should i try the new avcodec libs from 2.1 ? Im a Newbie i totally have no clue.. ----- totally agree: [offtopic] http://ffmpeg.org/pipermail/libav-user/2013-April/004304.html [/offtopic] Silver wrote > Hello, > > i dont have a solution now, why my video files gets out of sync after > 2-4mins. > If you use the scrubbing tool or play and pause, it gets back to sync. > > I heard something that you have to set a sync point for a certain i-frame, > for the encoder. > Isn't this the pts? I mean Video 1-Frame doesnt mean it has the same > length like 1 Audioframe, but if the pts/dts aren't correct should it be > asynchron the entire clip? The weird thing is that it is sync for at least > 1-3 min and so more you play, so more it gets asynchron. > > But still ... im confused why play/pause, scrubbing brings it back to > sync. > --- > > If im searching for sync points here... there are some attributes. > ffmpeg source > <https://gitorious.org/ffmpeg/ffmpeg/source/28240a60c1b5ce276e947ba013271ec009adc078:libavcodec/avcodec.h> > > > But i have no clue at all... what i can do. > Any help possible? -- View this message in context: http://libav-users.943685.n4.nabble.com/Transcoding-Decoding-Encoding-to-MP4-h264-asynchron-tracks-tp4659230p4659448.html Sent from the libav-users mailing list archive at Nabble.com. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
