laneo@laneo:/media/Windows/Users/Laneon/Documents/From Ubuntu/bin/$ avconv -i file.avi -vcodec libx2640 -crf 22 -preset slow -profile:v main -level 3 -x264opts ref=3:b-pyramid=none:weightp=1 -acodec libfaac out.mp4
avconv version 0.8.1-4:0.8.1-0ubuntu1, Copyright (c) 2000-2011 the Libav developers
  built on Mar 22 2012 05:29:10 with gcc 4.6.3
Input #0, avi, from 'file.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.10.2 (build 2540/release)
  Duration: 01:07:00.72, start: 0.000000, bitrate: 1456 kb/s
    Stream #0.0: Video: mpeg4 (Advanced Simple Profile), yuv420p, 624x352 [PAR 1:1 DAR 39:22], 29.97 tbr, 29.97 tbn, 29.98 tbc
    Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 122 kb/s
Unrecognized option 'x264opts'
Failed to set value 'ref=3:b-pyramid=none:weightp=1' for option 'x264opts'