Profile: set aprofile with a profile desc and a video/audio desc

* OutpuEssence doesn't have a setProfile function: need to know if the
essence is video or audio to set its profile.
* OutputVideo: set the profile with a profile desc + ImageDesc.
* OutputAudio: set the profile with a profile desc + FrameDesc.
* Profile: add const string to properly named the option in the profile.
Profiles: update existing profiles

* Use const name in Profile class.
* Add avProfileFrameRate for video profile.