Revert "replace FFmpeg with Libav in doc/"
This reverts commit f8a45fa1b1764b34d4263eacd93411e8ba0484a4.
replace FFmpeg with Libav in doc/
unless it stands for ffmpeg the program or is historic
Dumps all metadata to a text file for easy manual editing.
Originally committed as revision 26101 to svn://svn.ffmpeg.org/ffmpeg/trunk