[Ffmpeg-devel] encoding quality
Mon Mar 20 23:46:51 CET 2006
On 3/20/06, Zoltan NAGY <nagyz at nefty.hu> wrote:
> Michael Niedermayer wrote:
> > Hi
> > On Mon, Mar 20, 2006 at 06:27:53PM +0100, Zoltan NAGY wrote:
> >> hello ppl!
> >> I'd like to ask your advices in an encoding matter.
> >> I have several files, which I'd like to encode into flv. They're in
> >> different formats,
> >> but most likely wmv2 and wmv3.
> >> Currently I'm using mplayer:
> >> mencoder original.wmv -vf harddup -ofps 24 -oac mp3lame -ovc lavc
> >> -lavcopts vcodec=ffv1:vstrict=-2 -o out.avi
> >> then ffmpeg to encode this out.avi into flv:
> >> ffmpeg -y -i out.avi -f flv -b 512 out_end.flv
> >> but the flv's quality really sucks. If I change the bitrate to 1024 or
> >> 2048 or above,
> >> then it's ~fine, but the filesize gets bigger and bigger..
> >> what options could I tweak? I'd like to keep my file's sizes little, but
> >> I wouldnt like to
> >> loss a lot quality..
> > 2pass, trellis quant, 4mv, mbd=2, ...
> but how could I pass these options to the flv encoder? :)
> I'd be happy to read any mans, I just didnt found a really good
> one explaining things :-)
Did you read this ?:
I am disillusioned enough to know that no man's opinion on any subject
is worth a damn unless backed up with enough genuine information to
make him really know what he's talking about.
-- H. P. Lovecraft (about the flamewars on FFmpeg and MPlayer-dev mailing lists)
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