H264 baseline profile level 2 is used by default for encoding.
According to RFC max bitrate supported for this profile is 2Mbit/s.
Test results with this max bitrate show acceptable video quality. A proper
max bitrate determination algorithm will be developped in the future based on
video source information such as resolution, framerate.

Issue: #79686
Change-Id: I2863ff3ef581ad520f695e649d014a8c964213fa