![]() "You can use ffmpeg (or a gazillion similar utilities - most of which will use ffmpeg's library anyway - or even VLC ) to somehow magically extract part of your broken file, split it into bits, or even split it into individual frames, then reencode, and eventually you'll get a few sequences of frames out of the corrupted video, or even, with luck, a bit of continuous video which will play (sometimes only under VLC, sometimes only under mplayer, sometimes requiring )" (all these suggestions are very nice, but all assume that at least there is a MOOV atom somewhere - or else all will fail)."MP4 files can have a MOOV atom at the end (that's the usual way) but also at the beginning here's a selection of N solutions to move the atom from one place to the other" (no, they aren't useful if you have no MOOV atom whatsoever). ![]() To summarise most of them, here is what they usually say: What solutions I've found so far.Ī quick search just here on will get you a few dozens of similar questions and variations on the theme do that search on Google, and you'll get a few hundreds more even Quora has a few answers. So, how do I create a new MOOV atom in order to fix the file?Īnd now for the expanded question (if you bother to read it), which shows the homework I've done so far. TL DR: I have a broken MP4 which lacks a MOOV atom (neither at the beginning Please be forgiving to a video file format newbie, who has travelled far and wide all over the Web in search of a relatively simple question and hoped to get an answer (even a fairly complicated one would be fine!):
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