[MPlayer-users] Re: slightly confused by mencoder output

RC rcooley at spamcop.net
Tue Sep 13 09:11:32 CEST 2005

On Mon, 12 Sep 2005 22:37:41 +0200
Matthias Wieser <mwieser at gmx.de> wrote:

> Or any other supported resolution if you have a saa7134 card because
> the saa7134 chip has a not-so-bad deinterlacer.

Does it do ivtc too?  If not, it would be a good idea to mention this
is PAL-specific...

> > Your output dimentions should be exact multiples of 16.
> That's not so important if you don't care about the bitrate. If in
> doubt add 10% to the bitrate if your output dimentions are not
> multiples of 16.

It's more important than just bitrate...  I've got some files with crop
dimentions not multiples of 16, and they're always causing problems.  I
can't even remember how many bugreports I've filed because of them...

Bug workarounds have been added to lavc.  Filters have been patched and
re-patched not to crash...  Some filters still crash.  Bugs still
occasionally pop-up in lavc and mplayer/mencoder that cause these files
to crash, not output any video, or have major distortions, etc.

I would really, REALLY recomend making everything multiples of 16.

> I think it is much more important to take care that the vertical crop 
> offset is a multiple of four which is not the case in The Eye's
> mencoder command line.

Right. (missed that one)

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