ebur128 support depends on gpl support in ffmpeg: http://git.videolan.org/?p=ffmpeg.git;a=blob;f=configure;h=ec4ff083dd373bce34869b67189905e2822b848b;hb=refs/heads/release/2.8#l2747 Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>