un moyen de récupérer des fichiers mp4 corrompus?

J'ai un fichier mp4 qui semble avoir été corrompu d'une manière ou d'une autre:

$ file HDV_1042.MP4
HDV_1042.MP4: data

$ mediainfo HDV_1042.MP4
General
Complete name                            : HDV_1042.MP4
File size                                : 1.72 GiB

$ ffprobe HDV_1042.MP4 
avprobe version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2007-2013 the Libav developers
  built on Apr  2 2013 17:02:36 with gcc 4.6.3
HDV_1042.MP4: Invalid data found when processing input

$ AtomicParsley HDV_1042.MP4 -T 1

AtomicParsley error: bad mpeg4 file (ftyp atom missing or alignment error).

J'ai essayé de le récupérer avec 'untrunc' en utilisant un fichier de travail de la même caméra, mais cela n'a pas fonctionné:

$ ./untrunc HDV_1041.MP4 HDV_1042.MP4 Reading: HDV_1041.MP4
Composition time offset atom found. Out of order samples possible.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'HDV_1041.MP4':
  Metadata:
    major_brand     : avc1
    minor_version   : 0
    compatible_brands: avc1isom
    creation_time   : 1947-10-13 12:23:13
  Duration: 00:21:20.25, start: 0.000000, bitrate: 12131 kb/s
    Stream #0.0(eng): Video: h264 (Main), yuv420p, 1280x720, 11988 kb/s, 59.94 fps, 59.94 tbr, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 1947-10-13 12:23:13
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 1947-10-13 12:23:13
Failed to parse atoms in truncated file

A également essayé ffmpeg / avconv sans succès:

$ avconv -f h264 -i HDV_1042.MP4 -c:a copy -c:v copy HDV_1042.mp4 
avconv version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
  built on Apr  2 2013 17:02:36 with gcc 4.6.3
[h264 @ 0x1359ac0] non-existing PPS referenced
[h264 @ 0x1359ac0] non-existing PPS 0 referenced
[h264 @ 0x1359ac0] decode_slice_header error
[h264 @ 0x1359ac0] non-existing PPS 1 referenced
[h264 @ 0x1359ac0] decode_slice_header error
[h264 @ 0x1359ac0] no frame!
[h264 @ 0x134f9e0] Estimating duration from bitrate, this may be inaccurate
Input #0, h264, from 'HDV_1042.MP4':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Video: h264, 25 fps, 25 tbr, 1200k tbn, 2400k tbc
Output #0, mp4, to 'HDV_1042.mp4':
Output file #0 does not contain any stream

Voici un exemple de fichier de travail de la même caméra:

$ mediainfo HDV_1041.MP4
General
Complete name                            : HDV_1041.MP4
Format                                   : MPEG-4
Format profile                           : JVT
Codec ID                                 : avc1
File size                                : 1.81 GiB
Duration                                 : 21mn 20s
Overall bit rate                         : 12.1 Mbps
Writing library                          : SEC 

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L4.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 21mn 20s
Bit rate mode                            : Variable
Bit rate                                 : 12.0 Mbps
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 59.940 fps
Minimum frame rate                       : 59.920 fps
Maximum frame rate                       : 59.960 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.217
Stream size                              : 1.79 GiB (99%)
Title                                    : HMX-H300
Language                                 : English

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 21mn 20s
Bit rate mode                            : Constant
Bit rate                                 : 128 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Compression mode                         : Lossy
Stream size                              : 19.5 MiB (1%)
Title                                    : HMX-H300
Language                                 : English