mogria Videos $ ./record.sh test.avi                                    [20:31]
ffmpeg version 0.8.5-6:0.8.5-0ubuntu0.12.10.1, Copyright (c) 2000-2012 the Libav developers
  built on Jan 24 2013 14:49:20 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.
[alsa @ 0xbb2ba0] capture with some ALSA plugins, especially dsnoop, may hang.
[alsa @ 0xbb2ba0] Estimating duration from bitrate, this may be inaccurate
Input #0, alsa, from 'pulse':
  Duration: N/A, start: 1363203093.903131, bitrate: N/A
    Stream #0.0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
[x11grab @ 0xbccae0] device: :0 -> display: :0 x: 0 y: 0 width: 1920 height: 1080
[x11grab @ 0xbccae0] shared memory extension  found
[x11grab @ 0xbccae0] Estimating duration from bitrate, this may be inaccurate
Input #1, x11grab, from ':0':
  Duration: N/A, start: 1363203093.949380, bitrate: 1658880 kb/s
    Stream #1.0: Video: rawvideo, bgra, 1920x1080, 1658880 kb/s, 25 tbr, 1000k tbn, 25 tbc
Incompatible pixel format 'bgra' for codec 'libx264', auto-selecting format 'yuv420p'
[buffer @ 0xbb2900] w:1920 h:1080 pixfmt:bgra
[avsink @ 0xbb2ae0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0xbd0f60] w:1920 h:1080 fmt:bgra -> w:1920 h:1080 fmt:yuv420p flags:0x4
Incompatible sample format 's16' for codec 'ac3', auto-selecting format 'flt'
[libx264 @ 0xbcf240] using cpu capabilities: MMX2 SSE2Fast FastShuffle SSEMisalign LZCNT
[libx264 @ 0xbcf240] profile High 4:4:4 Predictive, level 4.0, 4:2:0 8-bit
[ac3 @ 0xbd0240] channel_layout not specified
[ac3 @ 0xbd0240] No channel layout specified. The encoder will guess the layout, but it might be incorrect.
[ac3 @ 0xbd0240] invalid bit rate
Output #0, avi, to 'test.avi':
    Stream #0.0: Video: libx264, yuv420p, 1920x1080, q=-1--1, 90k tbn, 25 tbc
    Stream #0.1: Audio: ac3, 48000 Hz, stereo, flt, 200 kb/s
Stream mapping:
  Stream #1.0 -> #0.0
  Stream #0.0 -> #0.1
Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height