RTSP to WEbrtc

[sishari]

Question

Hello,

I would like to read a RTSP H265 stream from a camera and read with a Webbrowser from Server over WEBRTC.

How i must config the MEdiaMTX in yml?
This is my config for H264 from the camera.

I have read for H265 i must transcode with ffmpeg the RTSP H265 to WebRTC H264.
paths:
cam1:
sourceOnDemand: true
source: rtsp://user:pw@192.168.1.67:554/cam/realmonitor?channel=1&subtype=2

[sishari]

Can anybod help me?

Thanks

[aler9]

Hello, conversion from RTSP to WebRTC is automatic. In order to ingest a RTSP stream into the server, instructions are here:
https://github.com/bluenviron/mediamtx#rtsp-cameras-and-servers

in order to read with WebRTC and a web browser, instructions are here:
https://github.com/bluenviron/mediamtx?tab=readme-ov-file#webrtc

If you want to use H265, you have to convert it to H264. Instructions are here:
https://github.com/bluenviron/mediamtx?tab=readme-ov-file#remuxing-re-encoding-compression

Putting all together:

paths:
  cam1:
    sourceOnDemand: true
    source: rtsp://user:pw@192.168.1.67:554/cam/realmonitor?channel=1&subtype=2
    runOnReady: >
      ffmpeg -i rtsp://localhost:$RTSP_PORT/$MTX_PATH
        -pix_fmt yuv420p -c:v libx264 -preset ultrafast -b:v 600k
        -max_muxing_queue_size 1024 -f rtsp rtsp://localhost:$RTSP_PORT/cam1_compressed

Then use http://localhost:8889/cam1_compressed instead of http://localhost:8889/cam1 in order to read.

[kalwinskidawid]

Hey @aler9
I did as you wrote (yup, I copied it 1:1 and only changed the source to make sure I didn't make a mistake).

In logs I got:

2025/09/23 12:00:03 DEB [WebRTC] [conn 172.20.0.1:45390] [c->s] OPTIONS /cam1_compressed/whep HTTP/1.1
2025/09/23 12:00:03 DEB [WebRTC] [conn 172.20.0.1:45390] [s->c] HTTP/1.1 204 No Content
2025/09/23 12:00:03 DEB [WebRTC] [conn 172.20.0.1:45390] [c->s] POST /cam1_compressed/whep HTTP/1.1
2025/09/23 12:00:03 INF [WebRTC] [session 33459d0c] created by 172.20.0.1:45390
2025/09/23 12:00:03 DEB [path cam1_compressed] created
2025/09/23 12:00:03 INF [WebRTC] [session 33459d0c] closed: no stream is available on path 'cam1_compressed'
2025/09/23 12:00:03 DEB [path cam1_compressed] destroyed: not in use
2025/09/23 12:00:03 DEB [WebRTC] [conn 172.20.0.1:45390] [s->c] HTTP/1.1 404 Not Found

What could be wrong?
I have an H265 (raw) camera that I would like to convert to H264 (compressed) format because some older computer and mobile libraries do not yet support H265.
Btw. Should I also create the cam1_compressed path? I can see that it has been created in the logs, but I cannot see it in the list I receive from the API.