Consistency checking
FLAC
FLAC files already contain MD5 sums of stream data, so changes to other metadata (artist, track title, etc) will not perturb this checksum. flac can be used to check FLAC files:
1 flac -ts *.flac
Some FLAC files cannot be checked, with the self-explaining warning:
WARNING, cannot check MD5 signature since it was unset in the STREAMINFO
The best thing to do is decode and recompress the FLAC files to contain an MD5 header. In the process, decoding is an effective check for frame damage. To rencode such files in-place:
1 flac --best -f *flac
MP3
Checkmate MP3 checker is a simple and fast tool for checking MP3 files, particularly checking for bad frames. Invocation:
1 mpck -qrB .
