SRT: Reduce latency to 200ms of srt2rtc.conf

[xiaozhihong]

peerlatency=0 can reduce 300ms of latency of srt to rtc.

[chundonglinlin]

When the latency is set to 300, the delay is above 500ms.

srt_server {
    enabled on;
    listen 10080;
    maxbw 1000000000;
    connect_timeout 4000;
    peerlatency 300;
    recvlatency 300;
}

When the latency is set to 0, the delay is above 200ms.

srt_server {
    enabled on;
    listen 10080;
    maxbw 1000000000;
    connect_timeout 4000;
    peerlatency 0;
    recvlatency 0;
}

TRANS_BY_GPT3