When processing Cb and Cr component In yuv420planner frame, the length
of width and height should be half of that in Y component.
Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>
The chunk size of RTMP packet means two things: When the SetChunkSize
command comes from the server, it changes rx chunk size of the peer
while the tx chunk size still stays unchanged.
Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>