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Testing audio files for corruption, just recovered from hard drive failure
bjackson128
post Jun 6 2006, 03:48
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Today I was finally able to recover all my music files from a hard drive that, to put it simply, had become unreadable. I used GetDataBack for NTFS, and as far as I can tell, 100% of my data has been restored. However, I am still paranoid about some of my files becoming corrupted or damaged somewhere during the process and am hoping that someone can put me at rest. I'm looking for a quick way to tell if any of my files were damaged or corrupted during the recovery process so that I can replace them now before I potentially discover problems later on. I guess I could just play them all, but that would take far too much time... any suggestions, or am I just being paranoid?
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Porcus
post Apr 25 2013, 11:22
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foo_verifier also - at least last time I needed this - fails to detect errors that are so grave that it does not recognize the file. That is, if you have a majorly corrupted song.mp3 in a folder, dump the folder into fb2k, ask it to verify - then it could return OK just because it does not even start verifying it.


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ChronoSphere
post Apr 25 2013, 18:05
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QUOTE (Porcus @ Apr 25 2013, 12:22) *
foo_verifier also - at least last time I needed this - fails to detect errors that are so grave that it does not recognize the file. That is, if you have a majorly corrupted song.mp3 in a folder, dump the folder into fb2k, ask it to verify - then it could return OK just because it does not even start verifying it.
That shouldn't be happening, if the file fails to decode then the internal checksum will not match the one decoded by foobar, which will be printed out as an error. I don't see how a file that fails to decode can still retain a valid checksum.
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Porcus
post Apr 25 2013, 19:02
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QUOTE (ChronoSphere @ Apr 25 2013, 19:05) *
QUOTE (Porcus @ Apr 25 2013, 12:22) *
foo_verifier also - at least last time I needed this - fails to detect errors that are so grave that it does not recognize the file. That is, if you have a majorly corrupted song.mp3 in a folder, dump the folder into fb2k, ask it to verify - then it could return OK just because it does not even start verifying it.
That shouldn't be happening, if the file fails to decode then the internal checksum will not match the one decoded by foobar, which will be printed out as an error. I don't see how a file that fails to decode can still retain a valid checksum.


You are right about the fact, but you missed the issue. Which is:

- Try to rename a .txt file into .mp3 and dump it into the playlist. Then fb2k will simply pretend it does not exist.
- Try a sufficiently corrupted mp3 file. Still fb2k will pretend it does not exist.

In neither of the cases, fb2k will actually warn you that you have fed it something you call an mp3 (by suffix) but which is not recognizable as such. For that, use e.g. Windows Explorer search to find all *.mp3, get the count, dump them to fb2k, count ... and if you are missing one in ten thousand, then good luck hunting.


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ChronoSphere
post Apr 25 2013, 21:49
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QUOTE (Porcus @ Apr 25 2013, 20:02) *
- Try to rename a .txt file into .mp3 and dump it into the playlist. Then fb2k will simply pretend it does not exist.
- Try a sufficiently corrupted mp3 file. Still fb2k will pretend it does not exist.

In neither of the cases, fb2k will actually warn you that you have fed it something you call an mp3 (by suffix) but which is not recognizable as such. For that, use e.g. Windows Explorer search to find all *.mp3, get the count, dump them to fb2k, count ... and if you are missing one in ten thousand, then good luck hunting.
Hmm I see what you mean now. But this kind of makes the verifier useless, doesn't it? Though probably foobar only skips the file if it cannot detect a valid header...
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Posts in this topic
- bjackson128   Testing audio files for corruption   Jun 6 2006, 03:48
- - Jebus   what kind of audio files? Some of them contain CR...   Jun 6 2006, 04:04
- - bjackson128   Sorry, I should've clarified... It's my en...   Jun 6 2006, 13:22
- - pest   my harddisk crashed last week and that was one of ...   Jun 6 2006, 13:36
|- - bjackson128   QUOTE (pest @ Jun 6 2006, 08:36) my hardd...   Jun 6 2006, 13:50
|- - pest   QUOTE (bjackson128 @ Jun 6 2006, 04:50) I...   Jun 6 2006, 15:34
|- - Synthetic Soul   QUOTE (bjackson128 @ Jun 6 2006, 13:50) I...   Jun 6 2006, 15:38
- - Synthetic Soul   I have batch files to verify both WavPack and FLAC...   Jun 6 2006, 14:42
|- - Michael Sargent   QUOTE (Synthetic Soul @ Jun 6 2006, 09:42...   Apr 20 2013, 16:29
- - bjackson128   Wow! Synthetic Soul, those batch files are inf...   Jun 6 2006, 16:44
- - Ethan Winer   QUOTE (bjackson128 @ Jun 5 2006, 22:48) I...   Apr 20 2013, 18:38
- - ChronoSphere   Why not just use foobar+foo_verifier?   Apr 20 2013, 18:55
- - marc2003   for other formats, you can always use foobar2000 w...   Apr 20 2013, 18:59
- - Porcus   foo_verifier also - at least last time I needed th...   Apr 25 2013, 11:22
|- - ChronoSphere   QUOTE (Porcus @ Apr 25 2013, 12:22) foo_v...   Apr 25 2013, 18:05
|- - Porcus   QUOTE (ChronoSphere @ Apr 25 2013, 19:05)...   Apr 25 2013, 19:02
|- - ChronoSphere   QUOTE (Porcus @ Apr 25 2013, 20:02) - Try...   Apr 25 2013, 21:49
- - ktf   QUOTE (Michael Sargent @ Apr 20 2013, 17...   Apr 25 2013, 14:33
- - Ethan Winer   QUOTE (ktf @ Apr 25 2013, 09:33) You...   Apr 25 2013, 19:52


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