>> Command executed:
ffmpeg -y -i "/home/tux/325 litre Malawi cichlid tank - YouTube.flv"  -vf scale=352:288 -f 3gp -vcodec h263 -r 15 -b 200k -acodec libvo_aacenc -ac 2 -ar 32000 -ab 64k "/home/tux/325 litre Malawi cichlid tank - YouTube.3gp"

>> Result:
ffmpeg version 0.8.5-4:0.8.5-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
  built on Jan 24 2013 18:01:36 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[flv @ 0x11bd9c0] Estimating duration from bitrate, this may be inaccurate
Input #0, flv, from '/home/tux/325 litre Malawi cichlid tank - YouTube.flv':
  Metadata:
    starttime       : 0
    totalduration   : 224