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Old 01-24-2013, 08:23 PM   #1
turtles788
 
 
 
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How to uncorrupt this .AVI

So when I use the Source Recorder to record a .dem file, the .avi file after "recording" is unopenable and will not play. VLC reported: "VLC does not support the audio or video format "undf". Unfortunately, there is no way to fix this" Does anyone know a solution?

Do not tell me to use FRAPS. FRAPS apparently makes lag spikes
(60 fps recording then suddenly dropping to 40 then back up to 60) without fraps is 120 fps

Last edited by turtles788: 01-24-2013 at 08:28 PM.
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Old 01-25-2013, 01:37 AM   #2
musser
 
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what did you use to convert the .dem file into a .avi file?
try re-converting it
try a different converter
can other people play your file? maybe its your codec and/or media player.
try a codec pack such as combined community codec pack or klite codec pack
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Old 01-25-2013, 06:31 PM   #3
turtles788
 
 
 
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Guess I'm using FRAPS

Morale of the story: Demo recording is horrible
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Old 01-25-2013, 07:57 PM   #4
Mush Man
 
 
 
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Try downloading and opening the video in VirtualDub. VirtualDub can recover and reconstruct AVI files in some circumstances. However, there's a chance it may not recover your file.

It sounds like Source Recorder messed up the encoding FourCC ID for the video, either leaving it as blank or writing it as undf, for undefined. You could perhaps fix this if you downloaded and opened the video in a hex editor, searching for where the FourCC ID is stored and changing it to something valid. The FourCC ID should be near the beginning of the file and is four bytes (characters) in length. It was at offset 0xBC for a file I just checked. If you want to know what you should replace it with, output a small AVI with Source Recorder and check its FourCC ID. If you don't want to hunt around for the ID in the file, use a program like MediaInfo.

It might also be a problem with VLC. Give Media Player Classic with the Combined Community Codec Pack a shot to see if will play.

Last edited by Mush Man: 01-25-2013 at 08:08 PM.
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