Well, correct me if I'm wrong, but this strikes me as a SPAM response as these companies essentially do registry repair and virus removal by remote.

My vote would be a program like HandBrake, which has a full MP4 compositing system built across a GNU MP4 (h.264/ffmpeg/Theora) library set. If it can read it, it can ignore the damage and recomposite the AV stream frame by frame and build a new file. In some cases you may lose the audio, though, if that is where the damage occurred, as MP4 video resets itself every several frames with a keyframe, but audio does not and can get lost if the start of the audio stream is corrupted.

I checked the users account and all of their posts have been about the same spam or unsolicited advertising to a pc repair website. Keep up the good work eire1274.

That's me... the SPAM FIGHTER!!!

We need more SPAM FIGHTERs gere