gorigio@gorigio-Notebook-PC:~/Desktop/ffmpeg$ ./ffmpeg -i ~/Desktop/ccent14.wmv
ffmpeg version git-2012-06-02-9ebe6e3 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jun  1 2012 18:31:14 with gcc 4.6.3
  configuration:
  libavutil      51. 56.100 / 51. 56.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
[asf @ 0xaeb83c0] Could not find codec parameters (Video: none (MSS2 / 0x3253534D), 800x600, 15 kb/s)
Guessed Channel Layout for  Input Stream #0.0 : mono
Input #0, asf, from '/home/gorigio/Desktop/ccent14.wmv':
  Metadata:
    WMFSDKVersion   : 10.00.00.3708
    WMFSDKNeeded    : 0.0.0.0000
    VBR Peak        : 108
    Buffer Average  : 229
    IsVBR           : 1
  Duration: 00:19:01.46, start: 0.000000, bitrate: 40 kb/s
    Stream #0:0: Audio: wmavoice ([10][0][0][0] / 0x000A), 22050 Hz, mono, flt, 20 kb/s
    Stream #0:1: Video: none (MSS2 / 0x3253534D), 800x600, 15 kb/s, 15 tbr, 1k tbn, 1k tbc
At least one output file must be specified
gorigio@gorigio-Notebook-PC:~/Desktop/ffmpeg$ ./ffmpeg -i ~/Desktop/ccent14.wmv ~/Desktop/convertedccent14.mp4
ffmpeg version git-2012-06-02-9ebe6e3 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jun  1 2012 18:31:14 with gcc 4.6.3
  configuration:
  libavutil      51. 56.100 / 51. 56.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
[asf @ 0x92383c0] Could not find codec parameters (Video: none (MSS2 / 0x3253534D), 800x600, 15 kb/s)
Guessed Channel Layout for  Input Stream #0.0 : mono
Input #0, asf, from '/home/gorigio/Desktop/ccent14.wmv':
  Metadata:
    WMFSDKVersion   : 10.00.00.3708
    WMFSDKNeeded    : 0.0.0.0000
    VBR Peak        : 108
    Buffer Average  : 229
    IsVBR           : 1
  Duration: 00:19:01.46, start: 0.000000, bitrate: 40 kb/s
    Stream #0:0: Audio: wmavoice ([10][0][0][0] / 0x000A), 22050 Hz, mono, flt, 20 kb/s
    Stream #0:1: Video: none (MSS2 / 0x3253534D), 800x600, 15 kb/s, 15 tbr, 1k tbn, 1k tbc
[buffer @ 0x92379a0] Invalid pixel format '-1'
Error opening filters!
gorigio@gorigio-Notebook-PC:~/Desktop/ffmpeg$