Parses SDP data contained within an RtspTrackInfo object and fills out the MediaCapability fields.

Currently supported video codecs: H.264 (AVC), MPEG-4.2, H.263, JPEG

Currently supported audio codecs: AAC, G.711a/u (also PT 0 and 8), G.726, PCM L16 (PT 10), AMR-NB, AMR-WB, G.728 (PT 15), G.729, G.729.1, G.722, G.723