aboutsummaryrefslogtreecommitdiffstats

how to run camera-gstreamer app

With PipeWire

  • PipeWire is the default path
  • attach camera
    • attach a camera to Hardware.
    • make sure it is enumerated properly with wpctl status cmd
    • make the desired device node the default node with wpctl set-default <camera-node-id> cmd
  • run
    • start camera-gstreamer from the UI.
    • The app can also be run from cmd prompt, make sure you login with agl-driver usr name.

With V4L2

  • login with agl-driver and start the app with ENABLE_V4L2_PATH=true camera-gstreamer cmd
  • V4L2 path cannot be taken when the app is run from the UI.

Without a physical camera device

The Virtual Video Test Driver (vivid) can be used for this purpose.

  • run modprobe vivid allocators=0x1 cmd
  • check dmesg to know the capture device created.
  • with PipeWire this device has to be made a default device, check above on how to do it.
  • with V4L2 use DEFAULT_V4L2_DEVICE to pass this new device

Other Details

  • For V4L2 path assumes that /dev/video0 is present and is set as a capture device.
  • Use DEFAULT_V4L2_DEVICE environmental variable to change it.
  • use DEFAULT_DEVICE_WIDTH and DEFAULT_DEVICE_HEIGHT environmental variable to override the default dimensions.

cmd examples

run app with V4L2 path and on /dev/video24

DEFAULT_V4L2_DEVICE=/dev/video24 ENABLE_V4L2_PATH=true camera-gstreamer

run app with default path(PipeWire) with a video frame of height 480

DEFAULT_DEVICE_HEIGHT=480 camera-gstreamer