In mov muxer, compute avg bitrate in esds
In ipod/mov/mp4 muxer, always write esds descriptor length using 4 bytes,ipod shuffle doesn't support anything else.
Place regression test output files in subdirs per family
Originally committed as revision 22155 to svn://svn.ffmpeg.org/ffmpeg/trunk
regtest: split reference files allowing tests to run individually
With this change, the output is checked immediately after each testhas run. This means commands like "make regtest-mpeg2" can now beused to run a single test and get meaningful results....