slotted ffmpeg

[Haubentaucher]

Hi,

it is possible to take the ffmpeg ebuilds in slots? (I know not enough about ebuild writing to answer this question.)
I discovered, that ffmpeg-0.11 contains a library libavformat.so.54, and ffmpeg-0.10 libavformat.so.53, so you can install 2 versions at the same time in principle.

It would be awesome to build the trunk version. There is a high activity in the trunk, but it breaks a lot of programs that link against libavformat. Best case would be, to use the cli-program ffmpeg from trunk and build the rest of the programs against an older version.