Cannot open video device /dev/video0: Operation not permitted

[chaosbunker]

Hi!

I am using the frigate (full access) addon in Home Assistant (supervised) on a rpi4 and am confused about how to use /dev/video0 as direct input for the raspberry pi camera that is connected to the pi.

I was running into "Cannot open video device /dev/video0: Operation not permitted" when I used the regular Frigate addon, then realized that the Full Access would probably have permission to access /dev/video0, but after switching to Frigate FA I kept having the same issue. I then saw in the home assistant addon configuration documentation page that there is an optional configuration option video: true("Mark this add-on to use the internal video system. All available devices will be mapped into the add-on.") that wasn't set in the Frigate (Full Access) config.yaml, so i added it .. and I also added - /dev/video0 to devices:

I then uninstalled and rebuilt the addon, started it, which didn't work. Then I restarted the host, stopped the addon, clicked rebuild, started it and then it worked. I tried to reproduce this, but would find myself stopping, starting, (re-adding to config,yaml, because it would be overwritten with the repos version, i think after restarting home assistant (but not when rebooting the host)), and rebuilding until it suddenly and finally works again ..

As you can imagine, i am really confused about how this is done the right way:) What is the correct way to directly access and use /dev/video0 with home assistant supervised?

cameras:
  rpicam:
    ffmpeg:
      inputs:
        - path: /dev/video0
          roles:
            - detect
            - rtmp
            - record
          input_args:
            - -f
            - video4linux2
            - -input_format
            - h264
            - -video_size
            - 1440x1080
            - -avoid_negative_ts
            - make_zero
            - -fflags
            - +genpts+discardcorrupt
            - -use_wallclock_as_timestamps
            - 1
    detect:
      width: 640
      height: 480
      fps: 5

[blakeblackshear]

From what I understand, you are making the right changes to the addon to enable use of the video0. I don't know why it would work inconsistently. I can add those to the beta addon so they get included in the next update.

[chaosbunker]

Thanks so much, that would be great!