[FFmpeg-devel] [PATCH] lavf/mov: ensure only one tkhd per trak

[Chris Cunningham]

> I have at least 2 files which have a id of 0
> Iam not sure where they are from so iam not sure i can share them

This was my fear as well. Also, we currently default the ID for a new
stream to be the number of streams now in the list. I worried that some
files may lack a tkhd or could be structured in such a way that they're
dependent on this defaulting and might break if I instead defaulted to
zero.