I am trying to create a script that performs various conversions between formats of audio files. In one particular step, I use afconvert in Terminal to convert an mp3 to aac(mpeg4/m4a), but in this process all of the info attached to the audio file (name, artist etc) is lost. I tried to id3cp to copy over the info but this doesn't work (I think because aac files don't use ID3 tags…).
Could someone suggest a way of copying all of the associated info on the mp3 files to the aac (m4a) file? Is there a way it can be retained during the conversion (preferable) or alternately a Terminal command to copy the info over?
Best Answer
I prefer the mutagen Python library for tag editing, since it has good support for a wide variety of formats with a consistent interface. Here’s a script for copying the metadata of a file:
You can open any file with
mutagen.File
, but that gives you raw access to the coded ID3 tags like'TPE1'
, instead of human-readable tags like'artist'
, soEasyID3
is used instead.