[FFmpeg-devel] [PATCH]lavf/isom: Recognize fourcc HEVC

[wm4]

On Fri, 4 May 2018 08:56:18 -0400
Compn <tempn at mi.rr.com> wrote:

> On Fri, 4 May 2018 14:36:03 +0200, wm4 <nfxjfg at googlemail.com> wrote:
> 
> > FourCC are already split up for avi and mov. Apparently it got
> > sabotaged at some point.  
> 
> i think mkv re-uses riff list from avi on purpose, as it was meant as a
> replacement to avi (and has all the vfw codec tags in the spec).
> duplicating mkv and avi seems like a bad idea as they use the same tags.
> 
> https://www.matroska.org/technical/guides/faq/index.html

mkv has a VfW muxing mode, in which it uses AVI headers and FourCCs in
the codec data. They're completely separate from normal Matroska codec
IDs, which are strings.