I wanted to reduce the bandwidth of my rtsp push-pull streams and found that reducing the bitrate was an obvious way. Here are some useful values: for x264enc, set bitrate=1 (Range: 1-2048000 Default: 2048) and found that the bandwidth reduction was noticeable. For mpph264enc, setting bpss-max =1000 (Range: 0-2147483647,Default: 0(auto calculate)) and found that the bandwidth reduction is more obvious. My concern is that setting a low value will lead to serious consequences.