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

[Mika Raento]

Ah. My approach to matching truns to fragment times was way too naive.
Rewritten to look up the time by sequence number and to handle
multiple truns inside a single traf. Resubmitting.

    Mika

On 9 October 2014 22:44, Michael Niedermayer <michaelni at gmx.at> wrote:
> 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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