in libavformat to allow building (de)coders and (de)muxers independently at
some point + support for this option in configure.
Originally committed as revision 4611 to svn://svn.ffmpeg.org/ffmpeg/trunk
fixes the random dts/pts during encoding
asf preroll fix
no more initial zero frames for b frame encoding
mpeg-es dts during demuxing fixed
.ffm timestamp scale fixed, ffm is still broken though
Originally committed as revision 3168 to svn://svn.ffmpeg.org/ffmpeg/trunk