介绍
这是 Janus Webrtc Gateway 的 Docker 映像。 Janus Gateway 仍处于积极的开发阶段。 因此，如官方文档所述，中间件库版本的一些较小修改经常发生。 我会尽我所能应对这种麻烦。 如果您需要有关此回购的任何请求，请随时与我联系。 关于此Docker映像的设置详细信息，您应该仔细阅读官方文档https://janus.conf.meetecho.com/index.html。
Janus WebRTC 网关性能
使用最新的 libnice，janus 网关似乎表现出色。 此存储库包含此补丁（请参阅https://gitlab.freedesktop.org/libnice/libnice/mer... ）https://webrtchacks.com/sfu-load-testing/load-test
[wip] Janus WebRTC 网关与 Jitsi Video Bridge（个人观点）
我认为 janus 对于网络研讨会（网络研讨会）更好，而 jitsi 对于网络会议系统更好。 当前的 Jitsi Video Bridge（20181007）的可伸缩性很差，因为没有本地录制文件（我不确定..）。
https://www.youtube.com/watch?v=OHHoqKCjJ0E Jitsi last-n + VP8 同播对网络会议 https://jitsi.org/wp-content/uploads/2016/12/nossd... 具有很好的性能。 pdf 对于视频格式，janus 录制是按视频流进行的，jitsi 是使用 chrome headlesss + ffmpeg（alsa，libxcb）进行的混合视频会议。 从这些方面来看，janus 适合举办网络研讨会，jitsi 适合举办网络会议。 当然，两个 WebRTC SFU 都很棒！ 我同时使用。
[wip] 用于准备 WebRTC SFU 开发的网络基准测试
使用 iperf, netperf
Janus ./configure
libsrtp version: 2.x
SSL/crypto library: BoringSSL
DTLS set-timeout: yes
Mutex implementation: GMutex (native futex on Linux)
DataChannels support: yes
Recordings post-processor: yes
TURN REST API client: yes
Doxygen documentation: no
Transports:
REST (HTTP/HTTPS): yes
WebSockets: yes
RabbitMQ: no
MQTT: no
Unix Sockets: no
Nanomsg: no
Plugins:
Echo Test: yes
Streaming: yes
Video Call: yes
SIP Gateway (Sofia): yes
SIP Gateway (libre): no
NoSIP (RTP Bridge): yes
Audio Bridge: yes
Video Room: yes
Voice Mail: yes
Record&Play: yes
Text Room: yes
Lua Interpreter: no
Duktape Interpreter: no
Event handlers:
Sample event handler: no
RabbitMQ event handler:no
MQTT event handler: no
JavaScript modules: no
RTMP -> RTP -> WEBRTC
IP=0.0.0.0 PORT=8888 /root/bin/ffmpeg -y -i "rtmp://$IP:80/rtmp_relay/$1 live=1" -c:v libx264 -profile:v main -s 640x480 -an -preset ultrafast -tune zerolatency -f rtp rtp://$IP:$PORT
你应该使用 janus 流插件
https://github.com/meetecho/janus-gateway/blob/8b388aebb0de3ccfad3b25f940f61e48e308e604/plugins/janus_streaming.c
WEBRTC -> RTP -> RTMP
IP=0.0.0.0 PORT=8888 SDP_FILE=sdp.file /root/bin/ffmpeg -analyzeduration 300M -probesize 300M -protocol_whitelist file,udp,rtp -i $SDP_FILE -c:v copy -c:a aac -ar 16k -ac 1 -preset ultrafast -tune zerolatency -f flv rtmp://$IP:$PORT/rtmp_relay/atyenoria
In order to get the keyframe much easier, it is useful to set fir_freq=1 in janus conf
you should use janus video room or audiobridge plugin
https://github.com/meetecho/janus-gateway/blob/8b388aebb0de3ccfad3b25f940f61e48e308e604/plugins/janus_videoroom.c
https://github.com/meetecho/janus-gateway/blob/8b388aebb0de3ccfad3b25f940f61e48e308e604/plugins/janus_audiobridge.c
After publishing your feed in your room, you should use rtp-forward. The sample javascript command is
# Input this in Google Chrome debug console. you must change publisher_id, room, video_port, host, secret for your conf.
var register = { "request" : "rtp_forward", "publisher_id": 3881836128186438, "room" : 1234, "video_port": 8050, "host" : "your ip address", "secret" : "unko" }
sfutest.send({"message": register});
[wip] 混合进行 janus 录制
从 janus 录制输出文件的 ffmpeg 混合我认为，对于长 mp4 文件，很难从倍数时间戳对齐文件。您可以考虑口形同步。
`#{ffmpeg_path} -y \
-ss #{member[0].ss_at_time} -t #{member[0].t_at_time} -i #{member[0].file_path} -ss #{member[1].ss_at_time} -t #{member[1].t_at_time} -i #{member[1].file_path} \
-ss #{member[2].ss_at_time} -t #{member[2].t_at_time} -i #{member[2].file_path} -f lavfi -i "color=White" \
-filter_complex \"
nullsrc=size=640x480 [base];
[0:v] setpts=PTS-STARTPTS, scale=320x240 [upperleft];
[1:v] setpts=PTS-STARTPTS, scale=320x240 [upperright];
[2:v] setpts=PTS-STARTPTS, scale=320x240 [lowerleft];
[3:v] setpts=PTS-STARTPTS, scale=320x240 [lowerright];
[base][upperleft] overlay=shortest=1 [tmp1];
[tmp1][upperright] overlay=shortest=1:x=320 [tmp2];
[tmp2][lowerleft] overlay=shortest=1:y=240 [tmp3];
[tmp3][lowerright] overlay=shortest=1:y=240:x=320;
[0:a][1:a][2:a] amerge=inputs=3
\" \
-preset ultrafast -r 30 -b:v 300k -c:v libx264 #{"/tmp/" + @conference["room_name"] + "/" + index.to_s + ".mp4"}`
- jibri 的解决方案 headless chrome + 用 ffmpeg 抓取屏幕是一种积极的方法。这是可能的，但可伸缩性很差。例如，jibri 的 ffmpeg + chrome 进程在我的 vps 服务器中消耗了大约300％。
rtp => rtmp => hls 的示例 nginx.conf
server_names_hash_bucket_size 64;
server {
listen 443 ssl;
server_name temp;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers "EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA256:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EDH+aRSA+AESGCM:EDH+aRSA+SHA256:EDH+aRSA:EECDH:!aNULL:!eNULL:!MEDIUM:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS:!RC4:!SEED";
add_header Strict-Transport-Security "max-age=31536000";
ssl_certificate /usr/local/nginx/server.crt;
ssl_certificate_key /usr/local/nginx/server.key;
access_log /app/log/nginx_access.log ;
error_log /app/log/nginx_error.log debug;
location /janus {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
proxy_redirect off;
proxy_pass http://127.0.0.1:8188;
}
location /janus_http {
proxy_pass http://127.0.0.1:8078;
}
location /janus_admin {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
proxy_pass http://127.0.0.1:7188;
}
location /janus_admin_http {
proxy_pass http://127.0.0.1:7088;
}
location /hls {
types {
application/vnd.apple.mpegurl m3u8;
video/mp2t ts;
}
root /tmp;
add_header Cache-Control no-cache;
}
}
待完成事项
- janus docker image
- janus performance improvement patch
- jitsi vide bridge image ( in other repo)
- example app for transcording
- demo site for RTMP -> RTP -> WEBRTC
- demo site for WEBRTC -> RTP -> RTMP
- client video mixing in janus gateway
- rtp => HLS with ffmpeg using GPU transcording
项目贡献者
Akinori Nakajima https://twitter.com/atyenori
任何人都欢迎。
（The first version translated by vz on 2020.07.22）
