breaks with IV in first packet as pointed out by funman
This reverts commit ccc273b4.

IOD bytes must be read in order.
introduced by 8fdf1f20

both packetizer and codec requiring extra

We might need to generate Opus headers without actually encoding anything

Was regression with that tricky one:
http://streams.videolan.org/issues/10981/6.mp4

This overrides any autotools site configuration.

CVE-2014-3466

things that does not belong to libmp4