[FFmpeg-devel] [PATCH] mov: Add option to keep packet order after seeking

Michael Niedermayer michaelni at gmx.at
Mon Mar 16 21:17:53 CET 2015

On Mon, Mar 16, 2015 at 04:07:07PM +0000, Derek Buitenhuis wrote:
> The current behavior may produce packets in a different order
> after seeking, compared to demuxing linearly from the beginning.
> This is because the MOV demuxer seeks in each stream based on
> timestamp, which may not necessarily match the original packet
> order.
> This makes implementing certain operations, such as segmenting,
> quite hard, and slower than need be.
> Therefore, add an option which retains the same packet order
> after seeking, as when a file is demuxed linearly. This is
> accomplished by seeking in the other streams, based on file
> position, rather than timestamp.
> The positional search in the index entries is implemented as
> a linear search since, in MOV, the index entries may be out of
> order in terms of file position, in particularily insane files.
> Signed-off-by: Derek Buitenhuis <derek.buitenhuis at gmail.com>
> ---
>  libavformat/isom.h    |  1 +
>  libavformat/mov.c     | 71 ++++++++++++++++++++++++++++++++++++++++-----------
>  libavformat/version.h |  4 +--
>  3 files changed, 59 insertions(+), 17 deletions(-)



Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. User
questions about the command line tools should be sent to the ffmpeg-user ML.
And questions about how to use libav* should be sent to the libav-user ML.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 181 bytes
Desc: Digital signature
URL: <https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20150316/eba33531/attachment.asc>

More information about the ffmpeg-devel mailing list