copyparty/bin/mtag/README.md

standalone programs which take an audio file as argument

some of these rely on libraries which are not MIT-compatible

• audio-bpm.py detects the BPM of music using the BeatRoot Vamp Plugin; imports GPL2
• audio-key.py detects the melodic key of music using the Mixxx fork of keyfinder; imports GPL3

dependencies

run install-deps.sh to build/install most dependencies required by these programs (supports windows/linux/macos)

alternatively (or preferably) use packages from your distro instead, then you'll need at least these:

• from distro: numpy vamp-plugin-sdk beatroot-vamp mixxx-keyfinder ffmpeg
• from pypy: keyfinder vamp

usage from copyparty

copyparty -e2dsa -e2ts -mtp key=f,audio-key.py -mtp .bpm=f,audio-bpm.py

• f, makes the detected value replace any existing values
• the . in .bpm indicates numeric value
• assumes the python files are in the folder you're launching copyparty from, replace the filename with a relative/absolute path if that's not the case
• mtp modules will not run if a file has existing tags in the db, so clear out the tags with -e2tsr the first time you launch with new mtp options

usage with volume-flags

instead of affecting all volumes, you can set the options for just one volume like so:

copyparty -v /mnt/nas/music:/music:r:cmtp=key=f,audio-key.py:cmtp=.bpm=f,audio-bpm.py:ce2dsa:ce2ts