mpeg2enc: Set the mpeg2 video profile and level from the caps for encoding
Submitted by Edward Hervey @bilboed
Link to original bug (#644915)
Description
+++ This bug was initially created as a clone of Bug 644233 +++
In the same way we should be able to configure h264 encoders' profile/level via the caps, we should be able to do the same thing for mpeg2 video.
A list of profile/levels can be found here : https://secure.wikimedia.org/wikipedia/en/wiki/H.262/MPEG-2_Part_2#Video_profiles_and_levels