[Libav-user] What are the possible reasons for unsyncing of a video in a transmux to TS?

[Ajita Pandey]

Hi,

Even I am facing same problem whenever I am try to transcode a file from mp4 to mpeg even just for verify with mp4 to mp4.
The audio is working fine but mine case there is no vodeo rather freeze first frame of video.

Just to know some thing about audio pts I mean at the time muxing how audio pts effects it.

Acttually whenever there is elementary stream transcoding ie only video or only audio its working fine.


Regards,
Ajita

From: libav-user-bounces at ffmpeg.org [mailto:libav-user-bounces at ffmpeg.org] On Behalf Of Wagner Patriota
Sent: Wednesday, April 25, 2012 10:50 AM
To: This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter.
Subject: [Libav-user] What are the possible reasons for unsyncing of a video in a transmux to TS?

I am transmuxing a MP4 to TS.

the original MP4 plays perfect!

After my transmux:
- the audio is perfect.
- the video is playing a little faster than the audio, finishing first... what could be a possible reason for this?

I am doing via code, but the equivalent to this:
ffmpeg -i perfect.mp4 -vcodec copy -acodec copy -vbsf h264_mp4toannexb -y output.ts

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