Photorec manages to recover >1000 files but most of these (which are MP4 format as seen as MOV by Photorec) cannot be opened... I know often this is considered to be fragmentation but oddly I can read 66 files and a bunch of text files that hold the dashcam status. Would I be able to read any of the .mov files if .mdat/ftyp fragmentation was at play. The Nextbase writes a small preview AND a larger full resolution file - they are not identical sizes but follow that pattern. The card was formatted before these files were written so there should be no over-writing taking place.
Running hexdumps:
These two work and are 1 minute (the Nextbase default) long:
Code: Select all
f7408128_ftyp.mov
00000000 00 00 00 20 66 74 79 70 61 76 63 31 00 00 00 00 |... ftypavc1....|
00000010 61 76 63 31 69 73 6f 6d 00 00 00 00 00 00 00 00 |avc1isom........|
00000020 0a 2b bf 38 6d 64 61 74 00 00 00 02 09 10 00 00 |.+.8mdat........|
00000030 00 13 06 00 0d 80 af c8 00 00 03 00 00 af c8 00 |................|
00000040 00 03 00 40 80 00 00 00 0e 06 01 09 00 3c 08 24 |...@.........<.$|
00000050 68 00 00 03 00 01 80 00 00 00 05 06 06 01 c4 80 |h...............|
00000060 00 04 7c 04 25 88 80 20 00 4c c6 f5 66 33 27 0b |..|.%.. .L..f3'.|
00000070 d0 ce b3 93 4a 2f 47 e6 ab f2 f6 7c 45 25 1d d4 |....J/G....|E%..|
00000080 dc 43 4d 26 fe 24 1c 7d 0e 56 12 e2 55 be 46 68 |.CM&.$.}.V..U.Fh|
00000090 7f d2 fe 9c 1b 8d 90 09 8f 11 b4 4d 74 48 9d e3 |...........MtH..|
f7428608_ftyp.mov
00000000 00 00 00 20 66 74 79 70 61 76 63 31 00 00 00 00 |... ftypavc1....|
00000010 61 76 63 31 69 73 6f 6d 00 00 00 00 00 00 00 00 |avc1isom........|
00000020 00 9c 20 78 6d 64 61 74 00 00 00 02 09 10 00 00 |.. xmdat........|
00000030 00 13 06 00 0d 80 af c8 00 00 03 00 00 af c8 00 |................|
00000040 00 03 00 40 80 00 00 00 0e 06 01 09 00 3c 08 24 |...@.........<.$|
00000050 68 00 00 03 00 01 80 00 00 00 05 06 06 01 c4 80 |h...............|
00000060 00 00 46 c4 25 88 80 20 03 ff f2 1f 73 2e 4b 0c |..F.%.. ....s.K.|
00000070 b6 eb 4c 9d 7a ee d1 8d 29 16 20 7e aa ee 28 f4 |..L.z...). ~..(.|
00000080 9e f3 52 6f 02 f5 1c 0a 3b f7 90 81 54 83 2e 14 |..Ro....;...T...|
00000090 55 67 6d 20 af d5 ff e5 04 6e 56 57 ff 4c fb 51 |Ugm .....nVW.L.Q|
Code: Select all
f7776768_ftyp.mov
00000000 00 00 00 20 66 74 79 70 61 76 63 31 00 00 00 00 |... ftypavc1....|
00000010 61 76 63 31 69 73 6f 6d 00 00 00 00 00 00 00 00 |avc1isom........|
00000020 0a af eb 5a 6d 64 61 74 00 00 00 02 09 10 00 00 |...Zmdat........|
00000030 00 13 06 00 0d 80 af c8 00 00 03 00 00 af c8 00 |................|
00000040 00 03 00 40 80 00 00 00 0e 06 01 09 00 3c 08 24 |...@.........<.$|
00000050 68 00 00 03 00 01 80 00 00 00 05 06 06 01 c4 80 |h...............|
00000060 00 04 91 24 25 88 80 20 00 4c c6 ea 6a 2b 81 58 |...$%.. .L..j+.X|
00000070 56 2b b4 ed 3f 26 c1 2e 10 68 85 20 8f cf f8 63 |V+..?&...h. ...c|
00000080 45 f3 7c bc 9a 83 56 15 71 22 6e 76 a5 b9 21 39 |E.|...V.q"nv..!9|
00000090 17 6c 7f e1 10 42 9a 4f 65 d4 c4 95 96 70 c9 13 |.l...B.Oe....p..|
f7797248_ftyp.mov
00000000 00 00 00 20 66 74 79 70 61 76 63 31 00 00 00 00 |... ftypavc1....|
00000010 61 76 63 31 69 73 6f 6d 00 00 00 00 00 00 00 00 |avc1isom........|
00000020 00 a7 94 3a 6d 64 61 74 00 00 00 02 09 10 00 00 |...:mdat........|
00000030 00 11 06 00 0d 80 af be 00 00 0a 00 af be 00 00 |................|
00000040 0a 40 80 00 00 00 0e 06 01 09 00 3c 08 24 68 00 |.@.........<.$h.|
00000050 00 03 00 01 80 00 00 00 05 06 06 01 c4 80 00 00 |................|
00000060 3b 26 25 88 80 20 00 df 00 2a d6 47 eb 2d 6c 1f |;&%.. ...*.G.-l.|
00000070 7e 88 4a 55 31 23 71 65 af 69 a3 d3 88 70 61 51 |~.JU1#qe.i...paQ|
00000080 03 87 00 9e 63 f8 1d 3a 18 57 01 a3 9c db e1 b7 |....c..:.W......|
00000090 d6 90 74 b5 1e 07 1e 96 ce 4e b9 e4 15 60 22 fc |..t......N...`".|
Code: Select all
total 740088
drwxr-xr-x 6 root staff 192 28 Feb 12:48 .
drwxr-xr-x 12 root staff 384 28 Feb 12:48 ..
-rw-r--r-- 1 root staff 178203180 27 Feb 22:59 f7408128_ftyp.mov
-rw-r--r-- 1 root staff 10431020 27 Feb 22:59 f7428608_ftyp.mov
-rw-r--r-- 1 root staff 179301242 27 Feb 22:59 f7776768_ftyp.mov
-rw-r--r-- 1 root staff 10982490 27 Feb 22:59 f7797248_ftyp.mov
Thank you
Ian