[Ffmpeg-devel] Got error while converting the mpg to 3gp in ffmpeg

[samir ghodasara]

HI,
Currently i install ffmpeg to convert mpg to 3gp in my suse linux 10.0machine,
but when i give this command in console,
i have ffmpeg 0.4.9-6.pm.svn20060701
          libffmpeg0 0.4.9-6.pm.svn20060701
          Mplayer  1.0pre8-4

linux:~ # ffmpeg3gp  -i /mnt/store/1016_20060720192000.mpg -b 50 -vframes 10
-s 176x144 /root/Desktop/samir/output/4.3gp
ffmpeg version CVS, build 4759, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:
  built on Jul 11 2006 15:57:35, gcc: 4.0.2 20050901 (prerelease) (SUSE
Linux)
Input #0, mpeg, from '/mnt/store/1016_20060720192000.mpg':
  Duration: 00:00:57.1, start: 0.276111, bitrate: 5266 kb/s
  Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 480x480, 25.00 fps, 6000
kb/s
  Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 384 kb/s
Output #0, 3gp, to '/root/Desktop/samir/output/4.3gp':
  Stream #0.0: Video: h263, yuv420p, 176x144, 25.00 fps, q=2-31, 50 kb/s
  Stream #0.1: Audio: 0x0000, 48000 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
[h263 @ 0x83209cc]removing common factors from framerate
Unsupported codec for output stream #0.1
linux:~ #

i am completely new user and can't able to find what is the problem.
So,plese tell me what i have to  do to solve the problem?

Thanks & Regards.
Samir.