API changes, most recent first:
+2014-02-xx - xxxxxxx - lavc 55.35.0 - avcodec.h
+ Give the name AVPacketSideData to the previously anonymous struct used for
+ AVPacket.side_data.
+
2014-xx-xx - xxxxxxx - lavu 53.06.0 - pixfmt.h
Add RGBA64 pixel format and variants.