unable to process a working video

[jlecour]

Hi,

After a recovery, I've ended up with some working files and some that might have been corrupted or truncated.
I've installed untrunc on my Mac (OS X 10.10). I've followed those instructions : #35

If I try to process any file I get this kind of output, even if both file are perfectly readable.

→ ./untrunc /Volumes/Passport/photorec-output/recup_dir.1/f5415936_mdat.mov /Volumes/Passport/photorec-output/recup_dir.1/f6792128_mdat.mov
Reading: /Volumes/Passport/photorec-output/recup_dir.1/f5415936_mdat.mov
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/Passport/photorec-output/recup_dir.1/f5415936_mdat.mov':
  Metadata:
    creation_time   : 2016-01-24 19:10:15
  Duration: 00:03:47.00, start: 0.000000, bitrate: 24825 kb/s
    Stream #0.0(eng): Video: mjpeg, yuvj420p, 1280x720, 24568 kb/s, 24 fps, 24 tbr, 24 tbn, 24 tbc
    Metadata:
      creation_time   : 2016-01-24 19:10:15
    Stream #0.1(eng): Audio: pcm_s16be, 16000 Hz, 1 channels, s16, 256 kb/s
    Metadata:
      creation_time   : 2016-01-24 19:10:15
This audio codec is EVIL, there is no hope to guess it.

Here is what ffmpeg sees when reading the working file :

→ ffmpeg -i /Volumes/Passport/photorec-output/recup_dir.1/f5415936_mdat.mov test.mov
ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.5 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
[mjpeg @ 0x7feaa301f400] Changeing bps to 8
Guessed Channel Layout for  Input Stream #0.1 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/Passport/photorec-output/recup_dir.1/f5415936_mdat.mov':
  Metadata:
    creation_time   : 2016-01-24 19:10:15
  Duration: 00:03:47.00, start: 0.000000, bitrate: 24825 kb/s
    Stream #0:0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), 1280x720, 24568 kb/s, 24 fps, 24 tbr, 24 tbn, 24 tbc (default)
    Metadata:
      creation_time   : 2016-01-24 19:10:15
      encoder         : Photo - JPEG
    Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 16000 Hz, 1 channels, s16, 256 kb/s (default)
    Metadata:
      creation_time   : 2016-01-24 19:10:15
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.

Any help would be immensely appreciated.