For those still using the FFmpeg-forked Libav project for your multimedia needs, the latest Git code has landed H.264 and MPEG4 encoders using OpenMAX IL.

I haven't yet seen any reports yet to confirm that the OpenMAX implementation is suitable, but it should be good news for those with the open-source RadeonSI Gallium3D driver stack looking to make use of the AMD VCE encoding engine using the Gallium3D OpenMAX state tracker, among other OpenMAX-supported drivers.

These OpenMAX IL encoders were added to libavcodec within Libav via this commit. This is implemented as a generic OpenMAX encoder so hopefully we'll see more video codecs supported soon.