Hi,
I am trying to do Decoding/Encoding at LICODE and here is some of the
parameter’s used in VideoCodec.cpp as part of initializing the Encoder …
vcoderContext->bit_rate=
vCoderContext->rc_min_rate=
vCoderContext->rc_max_rate=
vCoderContext->qmin=
vCoderContext->qmax=
vCoderContext->compression_level=
Some interesting results we have seen at our end which are as below …
1)If we configure qmin,qmax value as 5 then Chrome based client sends the
packet with 1-1.5Mbps but if we have configure these values with e.g. qmin
as 0 and qmax as 40 then Clients reduces the sending bit rate to 200Kbps on
average .
2)Configuring rc_min_rate and rc_max_rate with EQUAL doesn’t make encoder
Constant Bit Rate Mode if we configure qmin and qmax as 5 .Keeping
qmin,qmax diffrent and rc_min_rate and rc_max_rate diffrent keeps encoder
varable bit rate mode but sending rate gets reduced to lower value like
200KBPS .
So our question is what should be the right value for Constant Bit Rate
configuration in which we can send the video with higher data rate and same
for Varable Bi Rate mode.
Any help will be much appreciated .
Thanks
Dharm