[FFmpeg-devel] [PATCH]lavf/mov: Export vendor metadata

[wm4]

On Fri, 27 Jan 2017 09:39:03 +0100
Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> 2017-01-27 9:17 GMT+01:00 wm4 <nfxjfg at googlemail.com>:
> 
> > You're completely misunderstanding.  
> 
> Would you mind to elaborate?

FFmpeg shouldn't mux codec-specific tags into a different container.

Your ffmpeg.c patch works for transcoding only, not remuxing. Also, an
API user can't distinguish user tags and container-specific metadata
added by libavformat, which is a problem.

In theory, you have to add this information as side-data. Adding a new
side-data type is a bit roundabout, though.