What do I need to learn in order to repair an ogv or ogg video that is defective? Where to start? I recorded a video chat session with recordmydesktop in linux, but it is somehow defective. I give more details in a (big) footnote down here. I badly need to repair and play that video.

Please put me in the right direction, what should I learn about, which internet sites provide that information, and any clue on what you should thing the problem could be. I don't shy away from doing any learning efforts, but the question of Video Production is just too wide. Any help on narrowing the search for the probable cause would be very helpful.



This is the capture of the konsole during the recording:


  inma:~> recordmydesktop
  
  Initial recording window is set to:
  
  X:0   Y:0    Width:1366    Height:768
  
  Adjusted recording window is set to:
  
  X:6   Y:0    Width:1354    Height:768
  
  Your window manager appears to be KWin
  
  Initializing...
  
  Buffer size adjusted to 4096 from 4096 frames.
  
  Opened PCM device default
  
  Recording on device default is set to:
  
  1 channels at 22050Hz
  
  Capturing!
  
  ^CShutting down.
  
  
  
  Cached 72482 MB, from 215345 MB that were received.
  
  Average cache compression ratio: 66.3 %
  
  
  
  Saved 54287 frames in a total of 54245 requests
  
  ....
  
  STATE:ENCODING
  
  Encoding started!
  
  This may take several minutes.
  
  Pressing Ctrl-C will cancel the procedure (resuming will not be
  possible, but any portion of the video, which is already encoded won't
  be deleted).
  
  Please wait...
  
  Output file: out.ogv
  
  [89%]   [Cache File 141]
  
  Encoding finished!
  
  Wait a moment please...
  
  Done.
  
  Written 921301705 bytes
  
  (885658169 of which were video data and 35643536 audio data)
  
  Cleanning up cache...
  
  Done!!!
  
  Goodbye!


But now I try to play the file:


  inma:~> mplayer out.ogv 
  
  MPlayer svn r34540 (Ubuntu), built with gcc-4.6 (C) 2000-2012 MPlayer
  Team
  
  mplayer: could not connect to socket
  
  mplayer: No such file or directory
  
  Failed to open LIRC support. You will not be able to use your remote
  control.
  
  Playing out.ogv.                                                      
  
  libavformat version 53.21.1 (external)
  
  Mismatching header version 53.19.0
  
  libavformat file format detected.
  
  [ogg @ 0x2b4a70f82940]Codec not found
  
  [ogg @ 0x2b4a70f82940]Codec not found
  
  LAVF_header: av_open_input_stream() failed
  
  Ogg : Warning found none bos page from unknown stream 1091944242
  
  libavformat file format detected.
  
  [ogg @ 0x2b4a70f82940]Codec not found
  
  [ogg @ 0x2b4a70f82940]Codec not found
  
  LAVF_header: av_open_input_stream() failed
  
  Exiting... (End of file)


What is happeing with this recording? Will
It appears you do not have the necessary codec to play the video in mplayer. You will need to find a codec that can decode it. I can't tell from the posted information what codec it is.