Build gpac's executables with lowercase filenames (e.g. mp4box instead
of MP4Box) Also document optional dependencies and update treatment of
ffmpeg and openjpeg dependencies when building HEAD.
ClosesHomebrew/homebrew#8432.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
GPAC (Gpac Project for Advanced Content) is a suite of tools for
manipulating mpeg-4/h.264 video files. The most common need for
this package is for the MP4Box application that will interleave
metadata in a .mp4 file to support fast start and streaming for
h.264 video.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
