[Libav-user] Transcoding Decoding_Encoding to MP4/h264 - asynchron tracks

Silver marco_sie at web.de
Wed Feb 19 18:26:40 CET 2014


This Problem is not super new... but i couldn't find some solutions for it. 
Some were for ffmpeg or already too old and outdated and most Tutorials or
Guides are for Streaming or Video Playing. 
Not Transcoding and saving it to File.

Somebody out there with knowledge? 
How does it work?

PTS/DTS are millisecond based... 
for 25fps:
1Second/25 Frames = 0,04 Seconds, does this mean both pts/dts from video and
audioframe(packet) have to be 400? Next Value then 800,1200,.... ?

And whats about dropped Frames, can this be a reason for out of sync Clips?
Where should i look? Is there a better place?

:( -.-

Have a nice Day.

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