Why?

To streamline an SRT solution for the IRL community, with NOALBS(https://b3ck.com/noalbs) setup to work specifically with this SRT Solution you have one of the most reliable IRL stream recovery systems that you can run on your own.

Starting Notes:

• Cloned from https://gitlab.com/mattwb65/srt-live-server
• Edited by b3ck for the IRL Community
• This readme only covers Docker Desktop for Windows, but may have similarities to other Operating Systems but it's not intended.

Introduction:

srt-live-server(SLS) is an open source live streaming server for low latency based on Secure Reliable Transport (SRT). Normally, the latency of transport by SLS is less than 1 second in internet.

Requirements:

Install Docker >> https://docs.docker.com/get-docker/

Command Line Alternative:

If you don't want to use the Docker Desktop you can alternatively run this command after installing docker:

docker run -d -p 30000:30000/udp -p 8181:8181/tcp --name=sls-b3ck-edit --restart=always --pull=always -v /var/run/docker.sock:/var/run/docker.sock -v sls-b3ck-edit_data:/data b3ckontwitch/sls-b3ck-edit

Install Instructions (Using Docker Desktop):

• Run this command in a Command window or PowerShell: docker pull b3ckontwitch/sls-b3ck-edit
• Open your Docker Dashboard, click on Images on the left and you should see b3ckontwitch/sls-b3ck-edit listed.
• Hover over the b3ckontwitch/sls-b3ck-edit image you should see a RUN button on the right, hit the RUN button.
• A New Container window will pop-up;

• Click on optional settings.
• Give the container any name you want.
• For the Ports section just match the local host ports with the container ports;
• You'll need to click the (+) button to add the 8181 web server port.

• New Container Configuration Control:
• If you want to be able to change your configuration settings, like ports and streamid(s), you'll need to make a directory on your computer and put the sls.conf in the directory then match it up with a volume in the container and have it point to /ETC/SLS.

• If you will be using a custom sls.conf then you'll need to make one and put it in that directory you just made on your computer, here is an example of what should be in it;

srt {
    worker_threads  1; # Usually don't need to touch this
    worker_connections 300; # or this...
    
    http_port 8181; # HTTP Port for viewing your stats, ex; http://127.0.0.1:8181/stats, useful for 3rd Party Applications.
    cors_header *;  # Used for 3rd party applications, so you can pull data into them.
    
    log_file logs/error.log; # Log file location, if you have errors, look here.
    log_level info; # Log Level
    
    record_hls_path_prefix /tmp/mov/sls; # If you want HLS, this is the HLS location.
         
    server {
        listen 30000; # The port that SRT will listen on, don't forget to forward your ports!
        latency 1000; # Match this with your Client/Encoder, the lower this is then the less lag, but it could cause missed frames and pixelation,
        # in unstable conditions, You can go all the way up to 5000 with latency, which will usually help during unstable conditions, but induce lag.

        # This is what determines your "play" URL..
        domain_player play; # if this was set to "view" your player URL would be for example; view/live/feed1
        
        # This is what determines your "publish" URL..
        domain_publisher publish; # if this was set to "give" your publish URL would be for example; give/live/feed1
        
        default_sid publish/live/feed1; # If your SRT client/encoder doesn't support streamid, this will be the default.
        
        backlog 100; # Accept connections at the same time.
        idle_streams_timeout 3; # How many seconds until streams are considered idle and then closed.
        
        
        app {
            app_player live; # Name of your player URL, ex; if this was set to "remote" the play URL would be; play/remote/cam1
            app_publisher live; # Name of your publisher URL, ex; if this was set to "access" the publish URL would be; publish/access/cam1
            
            record_hls off; # Turn HLS on/off
            record_hls_segment_duration 10; # How long in seconds you want the HSL segments to be.
         
        }
    }
}

• If you don't change the config these defaults are as follows:
• SRT Port: 30000
• OBS Play URL: srt://<YOUR-LOCAL-IP>:<SRT-PORT>?streamid=play/live/feed1
• Client Publish URL: srt://<YOUR-EXTERNAL-IP>:<SRT-PORT>?streamid=publish/live/feed1
• Example Client Publish URL: srt://255.255.255.255:30000?streamid=publish/live/feed1

• After you figured out the way you want to manage your configuration click on the blue RUN button to add the image to a docker container.

• You could also install 'Microsoft Code' >> https://code.visualstudio.com/download , then install the Docker Extension and then browse/edit/save the sls.conf, please keep in mind you can only browse/edit/save files in a Docker Container while it's running:

Viewing your SRT stream in OBS:

OBS supports SRT protocol to view stream when version is later than v25.0. you can use the following URL in media source:

srt://<YOUR-IP>:<PORT>?streamid=play/live/feed1 example: srt://127.0.0.1:30000?streamid=play/live/feed1

Final Notes:

1. SLS refers to the RTMP URL format(domain/app/stream_name), example: publish/live/feed1. The URL of SLS must be set in streamid parameter of SRT, which will be the unique identification a stream.

2. How to distinguish the publisher and player of the same stream? In conf file, you can set parameters of domain_player/domain_publisher and app_player/app_publisher to resolve it. Importantly, the two combination strings of domain_publisher/app_publisher and domain_player/app_player must not be equal in the same server block.

3. There is a simple android app for test sls, your can download from https://github.com/Edward-Wu/liteplayer-srt

Release Notes

v1.4.8-b (b3ck edit)

1. Now compatible with SRT Source v1.4.2
2. Added Credits and Resources for the IRL Community.
3. Edited DockerFile to checkout the master from the SRT Source.
4. Created Windows Batch Files to build and start the SLS DockerFile.

Contact / Support

If you have any issues feel free to message me on discord @ b3ck#3517