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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
Old 12-21-2010
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.
 

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PYTAGS(1)							  [FIXME: manual]							 PYTAGS(1)

NAME
pytags - set and remove tags on media files from filename and options SYNOPSIS
pytags [OPTIONS] file [file...] DESCRIPTION
pytags is a simple, general-purpose tool for setting and removing media file tags. With no options, pytags prints a tag summary for all files specified on the command line. Options can be used to set and remove tags on files. Using --format, it is easy to change or create tags on by parsing metadata from filenames according to an arbitrary format string. This makes it simple to tag files that are consistently named. Additionally, tags can be manipulated directly with the --add, --set, and --remove options. These options are processed in order, so options specified later on the command-line may cause values set by earlier options to be overwritten. These options must appear after the --format, if it is used. OPTIONS
--add=EXPR Append a tag value all files according to EXPR. EXPR should be an expression like "artist=Foo". May be specified multiple times to add multiple values. --format=FORMAT Tag files with metadata extrapolated from filenames using format string FORMAT; see the section called "FORMAT STRINGS". This option must be specified before --add, --set, or --remove. --set=EXPR Set a single tag on all files according to EXPR. EXPR should be an expression like "artist=Foo". May be specified multiple times to set multiple tags. --set cannot be used to specify multiple values for a single tag. To do that, use --remove followed by multiple --add options. --remove=TAG Remove tags named TAG. May be specified more than once to remove multiple tags. -h, --help Show summary of options and exit. -v, --version Show version of program and exit. FORMAT STRINGS
The format string expected by --format is the same as that for pytagsfs. See the pytagsfs manual page for more information. EXAMPLES
Remove the genre tag from all .ogg files in the current directory. $ pytags --remove genre *.ogg Set the artist and album tag on all .mp3 files, and remove the genre tag. $ pytags --set artist=Foo --set album=Bar --remove genre *.mp3 Tag all of the .flac files in the current directory. All such files are assumed to be in the format "tracknum artist - trackname [album].flac". $ pytags --format '%n %a - %t [%l].flac' *.flac BUGS
Please report bugs on launchpad at http://launchpad.net/products/pytagsfs/+bugs. pytags relies on mutagen (the underlying Python tags library) to choose an appropriate tag format for the files being tagged. This cannot currently be overridden. SEE ALSO
pytagsfs(1) AUTHOR
Forest Bond Author. COPYRIGHT
Copyright (C) 2007, 2008, 2009 [FIXME: source] 2009-12-04 PYTAGS(1)
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