Video Index Repair Tool
Rebuilds a missing or broken index for MP4 / MOV files with H.264 video, and generates a new thumbnail. Works fully in your browser — nothing is uploaded anywhere.
Drag a video file here, or click to choose one
(used to rebuild timing — the original rate often can't be recovered)
This tool only handles one specific, common kind of damage: an MP4/MOV file whose index
(the
moov atom) is missing or broken while the raw video data (mdat)
is still intact — for example after a camera lost power mid-recording. It rebuilds the index
by scanning the raw H.264 frames directly. It cannot fix video data that is itself corrupted,
encrypted or DRM-protected files, or other codecs such as HEVC, VP9 or AV1. The frame rate and,
in rare cases, the resolution are best-effort guesses rather than guaranteed-exact values.