Corrupted MP4/GoPro Files

[alx72 0]

After connecting my GoPro2 to a USB switch to play video on a screen, the video files (MP4) got corrupted/deleted, probably through not properly switching off the camera before disconnecting. I managed to retrieve the files with a recovery tool, structurally they seem/are indicated to be OK. However, from what I could dig out from the web, the indexing of the file is most likely corrupted/broken. When trying to play back on a standard media player (VLC) it only shows black without sound. It does not indicate an error. Importing into editing software (iMovie, Video Deluxe) also did not help.

Any input / help how to fix this highly appreciated. Thanks.

[alx72 0]

Problem solved.
This did it:

http://www.grauonline.de/cmsimple2_6/en/?Solutions:HD_Video_Repair_Utility

Not for free, but it worked.

[trunk 0]

This is free but takes a little bit more skill.
http://www.gethypoxic.com/reviews-tests-hacks/hacks-and-mods/88-how-to-fix-gopro-footage-that-doesnt-play.html

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