[FFmpeg-devel] [PATCH] libvpx: alt reference frame / lag

[Vladimir Pantelic]

John Koleszar wrote:

> As I've said n-times, I'm not opposed to defining a packed frame
> format, or supporting it in libvpx. I'm saying that I see no way to
> use such a format in a WebM file in a backwards compatible way. If we
> define a packed frame format, and YouTube remuxes all of its WebM
> content overnight, or even just enables it for new content, the end
> result would be that everyone playing WebM today would be unable to do
> so tomorrow. This is unreasonable. Unpacked frames *is* what works
> with existing players.

So, like the bitstream format, the WebM ARF handling is frozen from day
one and not subject to change, I wonder why we have this discussion
at all...