OBS Studio

OBS Studio can publish to the server in several ways. The recommended one consists in publishing with RTMP.

OBS Studio and RTMP

In Settings -> Stream (or in the Auto-configuration Wizard), use the following parameters:

Service: Custom...
Server: rtmp://localhost/mystream
Stream key: (empty)

Save the configuration and click Start streaming.

The resulting stream will be available on path /mystream.

If you want to generate a stream that can be read with WebRTC, open Settings -> Output -> Recording and use the following parameters:

FFmpeg output type: Output to URL
File path or URL: rtsp://localhost:8554/mystream
Container format: rtsp
Check show all codecs (even if potentially incompatible)
Video encoder: h264_nvenc (libx264)
Video encoder settings (if any): bf=0
Audio track: 1
Audio encoder: libopus

Then use the button Start Recording (instead of Start Streaming) to start streaming.

OBS Studio and RTMP, multitrack video

OBS Studio can publish multiple video tracks or renditions at once. Make sure that the OBS Studio version is ≥ 31.0.0. Open Settings -> Stream and use the following parameters:

Service: Custom...
Server: rtmp://localhost/mystream
Stream key: (empty)
Turn on Enable Multitrack Video
Leave Maximum Streaming Bandwidth and Maximum Video Tracks to Auto
Turn on Enable Config Override

Fill Config Override (JSON) with the following text:

{
  "encoder_configurations": [
    {
      "type": "obs_x264",
      "width": 1920,
      "height": 1080,
      "framerate": {
        "numerator": 30,
        "denominator": 1
      },
      "settings": {
        "rate_control": "CBR",
        "bitrate": 6000,
        "keyint_sec": 2,
        "preset": "veryfast",
        "profile": "high",
        "tune": "zerolatency"
      },
      "canvas_index": 0
    },
    {
      "type": "obs_x264",
      "width": 640,
      "height": 480,
      "framerate": {
        "numerator": 30,
        "denominator": 1
      },
      "settings": {
        "rate_control": "CBR",
        "bitrate": 3000,
        "keyint_sec": 2,
        "preset": "veryfast",
        "profile": "main",
        "tune": "zerolatency"
      },
      "canvas_index": 0
    }
  ],
  "audio_configurations": {
    "live": [
      {
        "codec": "ffmpeg_aac",
        "track_id": 1,
        "channels": 2,
        "settings": {
          "bitrate": 160
        }
      }
    ]
  }
}

This can be adjusted according to specific needs. In particular, the type field is used to set the video encoder, and these are the available parameters:

obs_nvenc_av1_tex: NVIDIA NVENC AV1
obs_nvenc_hevc_tex: NVIDIA NVENC H265
obs_nvenc_h264_tex: NVIDIA NVENC H264
av1_texture_amf: AMD AV1
h265_texture_amf: AMD H265
h264_texture_amf: AMD H264
obs_qsv11_av1: QuickSync AV1
obs_qsv11_v2: QuickSync H264
obs_x264: software H264

OBS Studio and WebRTC

Recent versions of OBS Studio can also publish to the server with the WebRTC / WHIP protocol Use the following parameters:

Service: WHIP
Server: http://localhost:8889/mystream/whip