Michael Niedermayer wrote:
On Mon, Apr 13, 2015 at 04:36:18PM -0500, David Favor wrote:
David Favor wrote:
David Favor wrote:
The following command:
ffmpeg -i clip.mts -c:v copy -c:a copy clip.mp4 (or clip.mov)
seems to incorrectly write container values for fps + tbr which
causes .mp4/.mov files to play with very odd jerky movements.
https://trac.ffmpeg.org/ticket/974 seems to be a ticket already
opened for this.
More jittery artifacts.
This produces no jitter:
ffmpeg -fflags +genpts -i clip.mts -c:v copy -c:a copy clip.mp4
This produces jitter:
ffmpeg -fflags +genpts -i clip.mts -c:v copy -c:a libfaac clip.mp4
Anytime the audio stream is transcoded (libfaac or fdk), jitter returns.
This behavior isn't mentioned in the above ticket.
if you found a bug which isnt reported yet (i dont know if that applies
here) please open a new seperate ticket
https://trac.ffmpeg.org/ticket/4485 opened to cover audio transcode
having any effect on video stream.
https://trac.ffmpeg.org/ticket/974 updated with additional info about
-fflags +genpts having unexpected effect on container fps + tbr values.
Specifically, -fflags +genpts seems to imply the target footage will
have same fps + tbr values as source footage.
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
