Edit the tags of MP3 files by applying arbitrary Perl expressions.
In the Perl expression:
- $_ is the title, artist, album or genre to modify.
- $FILE is the name of the MP3 file.
- $MMSS is the duration in minutes and seconds.
- $SECONDS is the duration in seconds.
Example:
tag3 --title='s/^/Podcast: /' podcast*.mp3
Insert at the beginning of the title the string "MMDD", the month & day of the last-modification time of each mp3 file.
tag3 --title='($m,$d)=(localtime((stat$FILE)[9]))[4,3];s/^/sprintf"%02d%02d ",$m+1,$d/e' *.mp3