[Config Support]: h264 transcoding to mjpeg on RPi4

[DivineJimmi]

Describe the problem you are having

Hey,
i am a newcomer to frigate. Currently i am using Shinobi (on an RPi4) to transcode an h264 stream to mjpeg (to use it in openHAB and its app). This works fine, but due to the lack of Google Coral/Hailo, i want to switch the system.

So i set up frigate on my RPi4 in a docker container. I added my first cam (currently have 7) and was seeing its stream on my frigate ui.

The camera only has a h264 stream and nothing else. It is a Yi Dome U 2K with yi-hack firmware.

But, whatever i am doing, go2rtc is not able to transcode the incoming h254 into mjpeg (which i need). The MJPEG-links show no video at all.

I tried with hwaccel and without, tried different ffmpeg settings. Nothing worked. go2rtc is available under :1984 and is showing my camera. A click on "links" shows me many links, all of them work, except MJPEG Sources.

Whenever i open the MJPEG stream url, go2rtc throws an error:
[api.mjpeg] add consumer error="streams: EOF"

Version

0.15.0-cea210d

Frigate config file

mqtt:
  enabled: false
ffmpeg:
  hwaccel_args: preset-rpi-64-h264
go2rtc:
  streams:
    kamera:
      - rtsp://192.168.20.24/ch0_0.h264
      - "ffmpeg:kamera#video=mjpeg"
cameras:
  kamera: # <------ Name the camera
    enabled: true
    ffmpeg:
      inputs:
        - path: rtsp://192.168.20.24/ch0_0.h264 # <----- The stream you want to use for detection
          roles:
            - detect
            - audio
    detect:
      enabled: true # <---- disable detection until you have a working camera feed
      width: 1080
      height: 720
version: 0.15-1

Relevant Frigate log output

2025-02-28 03:53:06.376539212  [INFO] Preparing Frigate...
2025-02-28 03:53:06.895451370  [INFO] Starting Frigate...
2025-02-28 03:53:14.831939019  [2025-02-28 03:53:14] frigate.util.config            INFO    : Checking if frigate config needs migration...
2025-02-28 03:53:14.855108303  [2025-02-28 03:53:14] frigate.util.config            INFO    : frigate config does not need migration...
2025-02-28 03:53:14.910403211  [2025-02-28 03:53:14] frigate.app                    INFO    : Starting Frigate (0.15.0-cea210d)
2025-02-28 03:53:14.928907957  [2025-02-28 03:53:14] peewee_migrate.logs            INFO    : Starting migrations
2025-02-28 03:53:14.929738318  [2025-02-28 03:53:14] peewee_migrate.logs            INFO    : There is nothing to migrate
2025-02-28 03:53:14.945049361  [2025-02-28 03:53:14] frigate.app                    INFO    : Recording process started: 354
2025-02-28 03:53:14.968190182  [2025-02-28 03:53:14] frigate.app                    INFO    : Review process started: 356
2025-02-28 03:53:14.973199587  [2025-02-28 03:53:14] frigate.app                    INFO    : go2rtc process pid: 103
2025-02-28 03:53:15.002983182  [2025-02-28 03:53:14] detector.cpu                   INFO    : Starting detection process: 370
2025-02-28 03:53:15.008829725  [2025-02-28 03:53:15] frigate.detectors              WARNING : CPU detectors are not recommended and should only be used for testing or for trial purposes.
2025-02-28 03:53:15.029186875  [2025-02-28 03:53:15] frigate.app                    INFO    : Output process started: 385
2025-02-28 03:53:15.066010536  [2025-02-28 03:53:15] frigate.app                    INFO    : Camera processor started for kamera: 400
2025-02-28 03:53:15.116476538  [2025-02-28 03:53:15] frigate.app                    INFO    : Capture process started for kamera: 410
2025-02-28 03:53:15.262924655  [2025-02-28 03:53:15] frigate.api.fastapi_app        INFO    : Starting FastAPI app
2025-02-28 03:53:15.862088840  [2025-02-28 03:53:15] frigate.api.fastapi_app        INFO    : FastAPI started

Relevant go2rtc log output

2025-02-28 03:53:06.361816588  [INFO] Preparing new go2rtc config...
2025-02-28 03:53:08.150098906  [INFO] Starting go2rtc...
2025-02-28 03:53:08.329967058  03:53:08.329 INF go2rtc platform=linux/arm64 revision=b2399f3 version=1.9.2
2025-02-28 03:53:08.329981409  03:53:08.329 INF config path=/dev/shm/go2rtc.yaml
2025-02-28 03:53:08.331465651  03:53:08.331 INF [rtsp] listen addr=:8554
2025-02-28 03:53:08.331479799  03:53:08.331 INF [api] listen addr=:1984
2025-02-28 03:53:08.332002775  03:53:08.331 INF [webrtc] listen addr=:8555/tcp
2025-02-28 03:53:16.373340166  [INFO] Starting go2rtc healthcheck service...
2025-02-28 03:54:11.725191524  03:54:11.724 ERR [api.mjpeg] add consumer error="streams: EOF"

Frigate stats

No response

Operating system

Other Linux

Install method

Docker Compose

docker-compose file or Docker CLI command

version: "3.9"
services:
  frigate:
    container_name: frigate
    privileged: true # this may not be necessary for all setups
    restart: unless-stopped
    stop_grace_period: 30s # allow enough time to shut down the various services
    image: ghcr.io/blakeblackshear/frigate:stable
    shm_size: "512mb" # update for your cameras based on calculation above
    devices:
      - /dev/video11:/dev/video11 # For Raspberry Pi 4B
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /media/frigate/config:/config
      - /media/frigate/storage:/media/frigate
      - type: tmpfs # Optional: 1GB of memory, reduces SSD/SD Card wear
        target: /tmp/cache
        tmpfs:
          size: 1000000000
    ports:
      - "8971:8971"
      - "5000:5000" # Internal unauthenticated access. Expose carefully.
      - "8554:8554" # RTSP feeds
      - "8555:8555/tcp" # WebRTC over tcp
      - "8555:8555/udp" # WebRTC over udp
      - "1984:1984"
    environment:
      FRIGATE_RTSP_PASSWORD: "password"

Object Detector

CPU (no coral)

Screenshots of the Frigate UI's System metrics pages

No response

Any other information that may be helpful

No response

[NickM-27]

You'll need to enable trade level for exec logs for go2rtc

[DivineJimmi]

Done.
go2rtc log:

2025-02-28 04:09:08.779065039  [INFO] Preparing new go2rtc config...
2025-02-28 04:09:10.558987491  [INFO] Starting go2rtc...
2025-02-28 04:09:10.737041938  04:09:10.736 INF go2rtc platform=linux/arm64 revision=b2399f3 version=1.9.2
2025-02-28 04:09:10.737055660  04:09:10.736 INF config path=/dev/shm/go2rtc.yaml
2025-02-28 04:09:10.738436617  04:09:10.738 INF [api] listen addr=:1984
2025-02-28 04:09:10.739121549  04:09:10.738 INF [rtsp] listen addr=:8554
2025-02-28 04:09:10.740295565  04:09:10.740 INF [webrtc] listen addr=:8555/tcp
2025-02-28 04:09:18.793477849  [INFO] Starting go2rtc healthcheck service...
2025-02-28 04:09:27.708193414  [rtsp @ 0x5569c8f040] Unable to open RTSP for listening
2025-02-28 04:09:27.708208266  rtsp://127.0.0.1:8554/kamera?video: Address already in use
2025-02-28 04:09:35.057923150  [rtsp @ 0x5594304040] Unable to open RTSP for listening
2025-02-28 04:09:35.057974260  rtsp://127.0.0.1:8554/kamera?video: Address already in use
2025-02-28 04:09:35.067066394  04:09:35.066 ERR [api.mjpeg] add consumer error="streams: EOF"
2025-02-28 04:09:38.442902042  [rtsp @ 0x55911f7040] Unable to open RTSP for listening
2025-02-28 04:09:38.442913764  rtsp://127.0.0.1:8554/kamera?video: Address already in use

[DivineJimmi]

Adding

path:
    "5.0"

to my frigate.config under ffmpeg solved this issue completely...

rel: #16419 (comment)