[FFmpeg-devel] [PATCH] mov.c: read fragment start dts from fragmented mp4

Michael Niedermayer michaelni at gmx.at
Thu Oct 9 21:44:43 CEST 2014

On Thu, Oct 09, 2014 at 06:57:59PM +0300, Mika Raento wrote:
> If present, an MFRA box and its TFRAs are read for fragment start times.
> Without this change, timestamps for discontinuous fragmented mp4 are
> wrong, and cause audio/video desync and are not usable for generating
> HLS.
> ---
>  libavformat/isom.h |  15 ++++++
>  libavformat/mov.c  | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 155 insertions(+)

this seems to break some files

for example a file generated with the following 2 commands:
ffmpeg -i matrixbench_mpeg2.mpg -t 10 in.mp4
l-smash/cli/remuxer -i in.mp4 --fragment 1 -o test.mp4

ive not investigated why this doesnt work

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I know you won't believe me, but the highest form of Human Excellence is
to question oneself and others. -- Socrates
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