[FFmpeg-devel] [PATCH] Fix distortion problem in MPEG1/2 video

[Reimar Döffinger]

On Mon, May 13, 2013 at 04:31:46AM +0200, Michael Niedermayer wrote:
> On Mon, May 13, 2013 at 09:56:38AM +0900, Heesuk Jung wrote:
> > Hi Michael,
> > 
> > Can you check the uploaded media file which works well without full parsing
> > ?
> 
> how much speed gain do you have from disabling full parsing ?
> do you think its worth the extra complexity to not just enable it
> for all pot encoder generated files ?
> (extra complexity also likely means more bugs)

I very much think it is not worth it.
1) The speed difference is at most relevant when only remuxing and
not decoding. And even then disk speed is likely to be limiting.
2) The encoder is broken and everything points towards that it was
(and most likely still is) not getting any testing beyond
"it works on Windows, let's ship it". The decoders on Windows
generally all always do parsing, thus it is likely this encoder
will have further bugs that require parsing that its authors
won't notice in their testing.