We've been working on a draft spec for encapsulation of FLAC
in the ISO Base Media File Format (mp4). This is the initial
draft created by Monty Montgomery based on Yusuke Nakamura's
Opus-in-mp4 draft.
More details at https://bugzilla.mozilla.org/show_bug.cgi?id=1286097
Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>