MEncoder

„MEncoder is a free command line video decoding, encoding and filtering tool released under the GNU General Public License. It is a close sibling to MPlayer and can convert all the formats that MPlayer understands into a variety of compressed and uncompressed formats using different codecs.“

MEncoder. (2008, February 23). In Wikipedia, The Free Encyclopedia. Retrieved 18:57, April 5, 2008, from
http://en.wikipedia.org/w/index.php?title=MEncoder&oldid=193447614


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Sunday, May 25, 2008

Re: [MEncoder-users] FLV Conversion Problems

Dragon S5 wrote:
> I limited the framerates to 25000/1001 via the -ofps command as

Are you sure you don't mean 24000/1001 or 25? Those are standard NTSC
and PAL framerates, respectively.

> suggested on here and it has really helped my WMV playback a lot.
> However, the WMV videos still play a little choppy and MOV videos are
> now converting very poorly.

What do you mean by "poorly"?

> The commands:
> if($config[vresize] == 1) {$encodecommand="$config[mencoder]
> $config[vdodir]/$vdoname -o $config[flvdodir]/".$vid."x.flv -of lavf
> -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts
> vcodec=flv:vbitrate=$config[vbitrate]:mbd=2:mv0:trell:v4mv:keyint=10:

That's an extremely low keyint, and is pretty much guaranteed to hurt
compressibility.

> cbp:last_pred=3
> -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames

Using a newer version of mencoder shouldn't hurt...

> -ofps
> 25000/1001 -vop scale=$config[vresize_x]:$config[vresize_y]

Wow, your mencoder is really old. Using a newer version might help.

Also, you don't seem to be doing 2-pass encoding, which is likely to
help greatly.

-Corey
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