JpegDigger - JpegDigger is designed for recovering deleted photos from memory cards but it works on hard drives...
Restore.Media - Got a corrupted video or audio file? No worries – Restore.Media can repair even the most severely damaged video and audio files where other tools fail. Try it free!
JPEG Recovery LAB - JPEG Recovery LAB is specialized software to recover lost digital photos and video from memory...
untrunc - Restore a truncated mp4/mov. Improved version of ponchio/untrunc
myPhoto Recovery - myPhoto Recovery is a utility for recovery of lost and deleted photos.
Digital Video Repair - Digital Video Repair is freeware to repair (fix) MP4, MOV and AVI files having problems with playback or rewinding.