[Video] mp4 seek trouble (recover and set progressive download)

To support progressive download like video streaming you should “apply faststart”
Move moov atom to front – ffmpeg, qt-faststart.c

Recover and apply faststart

$ ffmpeg -i broken.mp4 -c:a copy -c:v copy -movflags faststart recover.mp4

* Tools

ffmpeg

AtomicParsely

Bento4