SRS rtmp http-flv Stream Low latency setting, testing

Configuration reference

Https://github.com/simple-rtmp-server/srs/wiki/v2_CN_LowLatency

Latency Impact factors

Encoders: Different encoders (free or open source), the delay is also different.

Streaming Media server: SRS2

Streaming protocol: For example: RTMP is real-time high, http_flv is also high-real-time, HLS is not, the official said 60s can tolerate ...

Player: VLC is slower than Ffplayer and player.

Network: Of course, it is also related to the network, and the relationship is relatively large.

Video bitrate: 200k and 2M of the rate of this comparison, of course, can also be attributed to network reasons.

SRS Configuration Low Latency

Listen              1935;max_connections      1000;srs_log_tank        file;srs_log_ file        ./objs/srs.log;http_api {     enabled         on;    listen           1985;} http_server {    enabled         on;     listen          80;     dir             ./objs/nginx/html ;} stats {    network         0;     disk            sda sdb xvda xvdb;} vhost __defaultvhost__ {    min_latency     on;     mr {        enabled      off;         #latency      350;     }    mw_latency      100;      #enabled          on;    gop_cache        off;    queue_length    10;     http_remux {    enabled     on;     mount [vhost]/[app]/[stream].flv;    hstrson;     }}

Test

Encoder: OBS

Player: OSMF (http://www.ossrs.net/srs.release/releases/demo.html?ip=192.168.1.170)

Test protocol: RTMP, http-flv

Code Rate:

200K delay Rtmp:1-2s (1S7) http_flv:2s2

800K Delay Rtmp:2s HTTP_FLV:3S30

SRS rtmp http-flv Stream Low latency setting, testing