[FFmpeg-devel] [PATCH] lavf/matroska: Export codecdelay and seekpreroll as metadata tags

[wm4]

On Tue, 17 Sep 2013 12:36:47 -0700
Vignesh Venkatasubramanian <vigneshv at google.com> wrote:

> This patch exports the values of Codec Delay and Seek Preroll
> container elements as metadata tags.

Shouldn't metadata contain tags? How do I know whether a metadata entry
should be user-visible (because it's a tag) or not (because it's file
specific data).

Is this information needed for correct playback (i.e. does a video
player need it)? If yes, shouldn't it be part of the AVCodecContext? If
no, why export it?