ffmpeg -i /tmp/input.mp4 -vcodec mpeg4 -vtag XVID -qscale 3 -acodec libmp3lame -ab 160k -vf scale=720:-1 -t 60 -ss 300 /media/9F33-4242/output.avi
ffmpeg version 0.8.9-6:0.8.9-1, Copyright (c) 2000-2013 the Libav developers
  built on Nov  3 2013 00:54:50 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/input.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2013-06-23 17:36:13
  Duration: 00:38:43.15, start: 0.000000, bitrate: 829 kb/s
    Stream #0.0(eng): Video: h264 (Main), yuv420p, 848x480 [PAR 1:1 DAR 53:30], 698 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2013-06-23 17:36:13
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2013-06-23 17:36:13
File '/media/9F33-4242/output.avi' already exists. Overwrite ? [y/N] y
[buffer @ 0xf46c40] w:848 h:480 pixfmt:yuv420p
[scale @ 0xf49980] w:848 h:480 fmt:yuv420p -> w:720 h:408 fmt:yuv420p flags:0x4
[mpeg4 @ 0x11d0120] Invalid pixel aspect ratio 901/900, limit is 255/255
Output #0, avi, to '/media/9F33-4242/output.avi':
    Stream #0.0(eng): Video: mpeg4, yuv420p, 720x408 [PAR 901:900 DAR 53:30], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2013-06-23 17:36:13
    Stream #0.1(eng): Audio: libmp3lame, 48000 Hz, stereo, s16, 200 kb/s
    Metadata:
      creation_time   : 2013-06-23 17:36:13
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height