1)I did install mplayer and mencoder. the question is how to convert files
2)I converted the file to a non-goofy mpeg2 using "ffmpeg -i input.mpg -sameq output.mpg" but then when I opened the new file (which was twice as large by the way) with avidemux the result was similar - the video was too slow and without sound. (pre-conversion the video was too fast and without sound)
3)typing "mencoder -ovc help -oac help" on the terminal, it said:
MEncoder SVN-r29237-4.4.1 (C) 2000-2009 MPlayer Team
copy - frame copy, without re-encoding. Doesn't work with filters.
frameno - special audio-only file for 3-pass encoding, see DOCS.
raw - uncompressed video. Use fourcc option to set format explicitly.
nuv - nuppel video
lavc - libavcodec codecs - best quality!
vfw - VfW DLLs, read DOCS/HTML/en/encoding-guide.html.
qtvideo - QuickTime DLLs, currently only SVQ1/3 are supported.
xvid - XviD encoding
x264 - H.264 encoding
copy - frame copy, without re-encoding (useful for AC3)
pcm - uncompressed PCM audio
mp3lame - cbr/abr/vbr MP3 using libmp3lame
lavc - FFmpeg audio encoder (MP2, AC3, ...)
faac - FAAC AAC audio encoder
(screen shot attached)