ffmpeg и странный flv

ffmpeg -i  starcraft1.flv starcraft1.mpeg
ffmpeg version 0.8.6-6:0.8.6-1, Copyright (c) 2000-2013 the Libav developers
  built on Mar 24 2013 07:20:17 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.
[flv @ 0x8edd800] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 25.00 (25/1)
Input #0, flv, from 'starcraft1.flv':
  Duration: 00:30:07.16, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: vp6f, yuv420p, 640x480, 25 tbr, 1k tbn, 1k tbc
    Stream #0.1: Audio: [0][0][0][0] / 0x0000, 0 channels
[buffer @ 0x9351d20] w:640 h:480 pixfmt:yuv420p
[mp2 @ 0x8ee0bc0] Requested sampling rate unsupported using closest supported (16000)
Incompatible sample format '(null)' for codec 'mp2', auto-selecting format 's16'
[mp2 @ 0x8ee0bc0] encoding 0 channel(s) is not allowed in mp2
Output #0, mpeg, to 'starcraft1.mpeg':
    Stream #0.0: Video: mpeg1video, yuv420p, 640x480, q=2-31, 200 kb/s, 90k tbn, 25 tbc
    Stream #0.1: Audio: mp2, 16000 Hz, 0 channels, s16, 128 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

Stream #0.1: Audio: mp2, 16000 Hz, 0 channels, s16, 128 kb/s