corrupt MP4

[vanekke]

Hi,

I have a MP4 file that got corrupted. It seems the end of the file is missing, if I open it in a hex editor, it's all blanks. I think 95% of the data is still intact, but I cannot play the movie anymore. I guess the footer is missing.

I tried to add a healty header and footer from another mp4 from the same camera, but this doesn't seem to do the trick.. My VLC debug says :
[00000300] logger interface: using logger...
[00000312] mp4 demuxer error: MP4 plugin discarded (no moov box)
[00000312] ffmpeg demuxer error: av_open_input_stream failed
[00000293] main playlist: nothing to play

Then I tried to open in VirtualDub (with a Avisynth script), but no good.

Anyone out there who can give me a few ideas?

Thanks, Thomas

[Soopafresh]

Demux it in YAMB and then remux it

[vanekke]

It's not working. Yamb logfile gives me this : IsoMedia File is truncated. You think this file can still be repaired?

[Soopafresh]

The only other thing I can think of is running it through AVIdemux, convert it to another file format perhaps.

[SCDVD]

Is this a bittorrent download that didn't complete? If so, the missing 5 percent isn't limited to the last 5 percent of the file. There are missing pieces throughout the file that can cause all sorts of strange behavior.

[vanekke]

Soopafresh, no good.. AVIDemux cannot read the file either..

SCDVD, no it's not a bittorrent download. It's a little video I shot with my phone, but somehow the end of the file got corrupted. I think it happend on a faulty external USB drive. To me 95% of the file looks OK, only the last bit is all blanks and the footer is missing.. Is it not possible to restore a footer in MP4-files? I read somewhere the length of the file cannot change?