How to find untagged audio files? Post: 302482287

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Top Forums UNIX for Dummies Questions & Answers How to find untagged audio files? Post 302482287 by MrZehl on Tuesday 21st of December 2010 07:34:29 AM

12-21-2010

Registered User

Quote:

Originally Posted by radoulov

OK,
I suppose all the code should be re-written.
Could you please provide again the list of mandatory tags for mp3 and flac?

For mp3:

Code:

Album
Artist
Title
Track

For flac:

Code:

ALBUM
ARTIST
DESCRIPTION
TITLE

Are those lists correct?

Yes. Indeed. If there is no id tag in the mp3 all properties except 'Track' are in the output and filled with spaces. The property 'Track' isn't in the output at all.
But if there is an id3 tag, but an empty one, the property field IS in the output and has value the value '0'.

With FLAC it's more clear. Only non-empty properties are in the output.

So for mp3 the check should be like:
If title is empty(=filled with spaces) or contains unknown or track
or if artist is empty(=filled with spaces) or contains unknown
or if album is empty(=filled with spaces) or contains unknown
or if the value of the is '0' or the property track is not available
then report this file

For flac:
If title is not available or contains unknown or track
or if artist is not avaliable or contains unknown
or if album is not available or contains unknown
or if track is not available
then report this file

If no property at all is filled metaflac returns nothing at all.

Hmm.. that's really a lot of checks.

MrZehl

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LEARN ABOUT DEBIAN

collectiongain

COLLECTIONGAIN(1)						       rgain							 COLLECTIONGAIN(1)

NAME

       collectiongain - large scale Replay Gain calculating tool

SYNOPSIS

       collectiongain [options] music_dir
       collectiongain --help
       collectiongain --version

DESCRIPTION

       collectiongain  is a script calculating the Replay Gain values of a large set of music files inside music_dir. Each audio file will be rec-
       tified against the other files of the same album, which are identified using the file tags.

OPTIONS

       --version
	      Display the version of the software.

       -h, --help
	      Display a short summary of the available options.

       -f, --force
	      Recalculate Replay Gain even if the file already contains gain information.

       -d, --dry-run
	      Don't actually modify any files.

       -r REF, --reference-loudness=REF
	      Set the reference loudness to REF dB (default: 89 dB)

       --mp3-format=MP3_FORMAT
		 Choose the Replay Gain data format for MP3 files.  Since there is no commonly accepted standard for Replay Gain in MP3 files, you
		 need to choose.  Possible formats are :

	      o ql (used by Quod Libet). This is the default value.

	      o fb2k (read and written by foobar2000, also understood by Quod Libet)

	      o mp3gain (tags as written by the mp3gain program; this doesn't modify the MP3 audio data as said program does).

       --ignore-cache
	      Don't trust implicit assumptions about what was already done, instead check all files for Replay Gain data explicitly.

SEE ALSO

       replaygain(1)

1.0								    2011-11-26							 COLLECTIONGAIN(1)