Encoding as fast as possible

[Guilllo]

I'd like to transcode x264 videos with aac audios to xvid and mp3 so as to be playable on my tv.

I don't really know which settings to use with mencoder but keep in mind that speed is the only thing that count : file size of one file may be about 4.4gb or less and with a not too big degradation.

Thanks

[nm]

There are example settings for libavcodec's MPEG-4 ASP encoder in the documentation: http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-enc-libavcodec.html#menc-feat-mpeg4-lavc-example-settings

Use a low constant quantizer (vqscale=2) for good quality when you don't have file size restrictions.

[Guilllo]

Encoding at only 34 fps.

I can remember nerodigital encoding at 70fps when i was under windows.

Isn't there a way to achieve such a speed when encoding a first pass, which are know to be fast ? I would use the first pass as the final file....

[nm]

Well, -lavcopts vcodec=mpeg4:mbd=0:turbo:vqscale=3 runs at about 50 fps on my Athlon XP 2400+, with a PAL MPEG-2 source. The turbo parameter in MEncoder's lavcopts enables some "fast first pass" settings, but you may need to tweak things further. If you have a dualcore CPU, add more encoding threads (-lavcopts threads=2:...).

[Guilllo]

I've got a P4 3.2 GHZ HT.

You're right. I'm about 75 fps now. Thanks