Encountered a capability negotiation issue when conferencing with a HUAWEI terminal.
It happened in a dual stream(H.239) capability negotiation.
1. According to the H.245 TCS, both terminal have 1080P 60 fps capability.
2. The band width setting was extreme low.
3. HUAWEI sent a OLC request with 4CIF H.264 video.
After did some check, and ran more tests with different parameters and scenarios, turned out the capability in HUAWEI’s OLC can be
right (which is relative now) if we simply increase the bandwith/bitrate of the meeting.
So it’s clear enough now.
HUAWEI implemented a more complex terminal capability comparison/negotiation mechanism than us.
We’d only checked with H.264’s parameters like Level MaxMBPS MaxFS, in calculating the capability. Complete ignored the bit rate parameter which suppose to be a decisive factor of conferencing.
So, apparently, HUAWEI took a good move, we should follow it.