brandoninvergo/coredesktop — comment on commit 22791f4522f3d5fdb9f37a18d4a90633edfc7e8d
File: ABOUT line 78
By brandoninvergo:

In the meantime I've found this: https://www.gnu.org/software/libextractor/ which includes a demo commandline program called `extract` which does the metadata reading for a ridiculous number of formats.