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

[Vladimir Pantelic]

John Koleszar wrote:

> Here's another example: consider a VNC type application. You could use
> the ARF buffer to keep a low-quality version of parts of the screen
> that are currently hidden. You might go a long time without ever
> updating a visible part of the screen, but still do updates to the
> hidden part of the screen. This could give a better experience when
> dragging windows around. In this case, there would be many invisible
> packets, and there wouldn't be a visible packet to pack them with.

send ARF as a "packed-B" together with a "nocode" frame....