Question: how to limit vbv buffer size or maxrate in OpenH264

[zf29]

Hi,

In x264, we can set vbv buffer size or vbv maxrate. I wonder if we can do the same thing in OpenH264? If not, is there any similar parameter I can set to limit the vbv buffer size? Right now, I am doing real-time screen sharing within very low latency. When there is a huge scene change, the screen will stuck for a short time. Thanks.

[sijchen]

the max bit rate can be set like this:

• command line option: -maxbrTotal {total_max_br} -lmaxb 0 {spatial_layer_max_br}
• interface: https://github.com/cisco/openh264/blob/master/codec/api/svc/codec_app_def.h#L559 https://github.com/cisco/openh264/blob/master/codec/api/svc/codec_app_def.h#L456

note that in both ways, you need to set the total one and the layer one simultaneously

[zf29]

Thanks for the answer. But how about vbv buffer size? Is there a way to set vbv buffer size like in x264 or vp9?

[ruil2]

there is no interface to set VBV buffer size in Openh264 now. we can add this requirement to backlog. thanks!

[huili2]

Close it since no support for this requirement.