[MPlayer-users] LAVC-MPEG4 vs DIVX4 vs XVID??

[D Richard Felker III]

On Wed, Oct 22, 2003 at 01:42:09PM +0300, Tuukka Toivonen wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> On Tue, 21 Oct 2003, Dominik 'Rathann' Mierzejewski wrote:
> 
> >Why, for example do you set -sws 2 when you don't scale? Why use -mc 0?
> 
> If I encode with mencoder and with -noskip -skiplimit 0 _it still drops
> frames_ which is quite awful. -mc 0 should stop it (except that if you
> encode realtime, what I do not, then it might be necessary to skip
> frames to keep A/V sync).

Depending on your source content and framerates used, it always might
be necessary to skip frames. If you use -noskip/-mc 0, you should be
VERY careful to ensure that you haven't broken A/V sync in the output
file. There's a very good reason mencoder sometimes skips frames.

Unfortunately mencoder's handling of A/V sync is somewhat broken, so
often it will skip a frame and then duplicate a frame just a few
frames later... In theory adjusting -mc (to an appropriate nonzero
value) should reduce this problem.

> (Actually, I haven't yet tried if -mc 0 helps, but Richard said it would)
> 
> That's at least some justification for that particular option.
> 
> Maybe our fellow user is using random options because nobody has
> given him better options =)
> Maybe that's because he's using divx while everybody else is using lavc.

Or maybe he's just stupid, since he keeps double-posting, breaking
threading, and not listening to any of the advice he's given... And of
course he's using divx, which suggests he's not too bright to begin
with...

Rich