[FFmpeg-devel] ffmpeg latest git - rewrapping (codec copy) breaks container fps/tbr values

Michael Niedermayer michaelni at gmx.at
Tue Apr 14 00:13:24 CEST 2015

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

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

You can kill me, but you cannot change the truth.
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