[NUT-devel] [PATCH][RFC] keyframes

[Rich Felker]

On Wed, Jan 16, 2008 at 02:22:31PM +0100, Michael Niedermayer wrote:
> On Tue, Nov 20, 2007 at 12:18:09PM +0100, Michael Niedermayer wrote:
> > Hi
> > 
> > attached patch would change nut.txt to the alternative keyframe definition
> 
> i will apply this in a few days if there are no objections

I'm not opposed to any of this in principle, but I think the wording
could be clearer (more formal, less discussion of rationale which
belongs in a separate section imo).

The one actual technical issue I'd like to consider is the whole
convergence thing. For instantly-convergent things like mp3 it doesn't
matter so much, but if we're going to use this definition of keyframes
I would like a way to know how far back one has to begin decoding to
get 'virtually identical' results. Otherwise a good deal of the
seeking power of nut is lost for applications that need error-free
decoding, when the file uses such a codec. But I don't have any easy
answer and since such codecs aren't really in widespread use I'll let
the issue slide if no one has any easy answers.

Rich