Heal20171080pwebdldd51h264rkethd -

ffmpeg -i corrupted.mp4 -c copy fixed.mp4 For h264 + DD5.1 in MKV:

ffmpeg -i corrupted.mkv -codec copy -map 0 fixed.mkv heal20171080pwebdldd51h264rkethd

Untrunc is excellent for repairing damaged h264 video streams. You need a reference file (same resolution, codec, and container). ffmpeg -i corrupted

FFmpeg can remux the file without re-encoding, often fixing minor header corruption: often fixing minor header corruption: