Description
Checkmate mpck checks mp3s. It scans the file to see if the frames are where they are supposed to be, if the frame headers are correct and if the headers are consistent throughout the file. It gives some statistics on the file like bitrate and length, and a conclusion whether the file is good or bad.
MP3 checker is a Microsoft Windows interface for mpck. It also scans MP3 files and has a Explorer-like display which shows which files where scanned and what the result was. MP3 checker was tested on Windows 2000 and should work on any Windows version.
Usage
Usage: mpck [OPTION]... [FILE]... Verbosity: -v, --verbose print some extra info -q, --quiet print only Ok or Bad per file -B, --badonly only report bad files Other options: -R, --recursive check directories recursively -e, --extention=EXT only check files ending on .EXT -r short for -R -e mp3 -m, --maxname=NUM report bad for filenames which exceed NUM characters -n, --namecheck check for strange characters in the filename -h, --help print this help, then exit -V, --version print version information
Output
Occasionally, something goes wrong and mpck prints an error. It has one of the following formats:
- mpck: stat on blah failed
- mpck:bla: foo bar error
- mpck:bla:34003: yet another error
Number 1 indicates a general error. Number 2 means an error occured in file bla. Number 3 says an error occured in file bla, at offset 34003 (decimal).
If all is well, mpck will output something like this:
SUMMARY: mp3/test.mp3
version MPEG v1.0
layer 3
bitrate 128000 bps
samplerate 44100 Hz
frames 7271
time 3:09.936
unidentified 0 b (0%)
errors none
result Ok
Exit status
mpck returns one of the following values:
| 0 | Everything went OK and no broken files were found. |
| 1 | Everything went OK, but at least one broken file was found. |
| 2 (ENOENT) | File or directory not found, stat failed. |
| 4 (EINTR) | The program received a SIGINT. |
| 5 (EIO) | Read error. |
| 12 (ENOMEM) | Malloc failed due to memory shortage. |
| 21 (EISDIR) | The given file is a directory. |
| 22 (EINVAL) | Invalid argument, no filename supplied. |
| 36 (ENAMETOOLONG) | File extention or file name is too long. |
Wordlist
- ID3V1
- Specifies if a ID3v1 tag is present in the file
- ID3V2
- Specifies if a ID3v2 tag is present in the file
- average bitrate
- See: bitrate, vbr
- bitrate
- One second of sound is stored in this many bits
- frames
- Number of frames in the file
- layer
- MPEG layer - 1, 2 or 3.
- length
- The length of a frame in bytes
- offset
- The position in bytes from the start of the file
- result
- Specifies if the file is correct or damaged
- samplerate
- The sound is sampled this many times per second
- size
- Size of the file in KiB (1 KiB = 1024 bytes)
- stereo
- Specifies wheter the file is stereo or mono
- time
- The duration of the soundfile
- unidentified
- This many bytes are not part of a MP3 frame or a ID3 tag
- vbr
- Variable bitrate, bitrate differs per frame
- version
- MPEG version - 1.0, 2.0 or 2.5