[FFmpeg-devel] [PATCH] provide an input parameter to specify 3d stereo format for mkv/webm 3d videos

Kirill Gavrilov gavr.mail at gmail.com
Tue Apr 26 09:57:17 CEST 2011


2011/4/26 Alok Ahuja <waveletcoeff at gmail.com>

> * I'm not sure of an inherent need to provide demux support for the same
> tag
> since it is up to a specific implementation as to how they would operate on
> the StereoMode tag. For example, Firefox uses it to render 3D WebM videos.
sure it is an application-specific implementation for this time.
But HOW application can retrieve this flag if you doesn't provide the way
for that?!
Using original mkv demuxer library (thus parse video file twice - with
libavformat and with mkv demuxer)?

* Have multiple video tracks containing StereoMode tags within a single
> container does not seem like a valid use-case. Therefore, it should be ok
> to
> limit the input to a single stereo_mode parameter.
While this is a not common situation I don't see any problems to have
several video tracks
in MKV container some of them in stereo and some of them only in mono (for

P.S.: FFmpeg is NOT only command-line tool.
Kirill Gavrilov,
Software designer.

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