• Video Window Does not render

jakaskerl

Yes all scripts referencing the right and left mono cameras work perfect. Just the RGb does nothing.

Specifically I have been trying to compare and contrast the rgbpreview.py (that does nothing, generates no errors but does not even render a black window) and mono_preview.py that does work. I am trying to debug these variables in pycharm:

xoutLeft = pipeline.create(dai.node.XLinkOut)

According to the hellow world example provided in the documentation, this is where the camera gets 'added' whether it be RGB or Monjo. I am trying to figure out what is different with the camera that works and the one that doesnt.

Anything specific I could look at to determine where the issue may lie.

I was looking at the connection attribute but is says 'None' for the value for both cameras so that is not a good indicator why one would work and one would not. Any variable specifically I could set a debug 'watch' to shed more light on this?

    Hi BrianHouse
    I feel like the XLink for color just isn't sending frames to a queue correctly. When reading from the rgb queue with .get() the script probably blocks, since there is no frame to be read and .get() is a blocking function.
    I believe since you are running all the latest versions of software, it might be a hardware fault.

    Could you:

    • try to run the pipeline graph tool to see where the stream stops
    • try the same script with the same camera and usb cable on a PC to confirm

    Thanks,
    Jaka

      jakaskerl

      Here is the output from first running mono_preview.py which does work:

      (base) Brians-MacBook-Pro:examples brianhouse$ pipeline_graph run "python3 MonoCamera/mono_preview.py"

      Pipeline schema retrieved

      Program exited.

      0. MonoCamera.out (10) -> XLinkOut.in (2)

      1. MonoCamera.out (6) -> XLinkOut.in (1)

      Here is the output from rgb_preview.py which does not work:

      (base) Brians-MacBook-Pro:examples brianhouse$ pipeline_graph run "python3 ColorCamera/rgb_preview.py"

      Pipeline schema retrieved

      Program exited.

      0. ColorCamera.preview (8) -> XLinkOut.in (1)

      • erik replied to this.

        Hi BrianHouse ,
        We apologize for taking this long to debug.. Could you just try the last thing, the cam_test.py, and copy the terminal output? My guess is that ColorCam is connected, but will stream 0 FPS, which means the cable isn't properly connected on the PCBA. In such case, we will replace the device asap.
        Sorry again!

          erik

          Are there other modules I am going to need"?

          (base) Brians-MacBook-Pro:tests brianhouse$ python3 cam_test.py 

          Traceback (most recent call last):

            File "cam_test.py", line 45, in <module>

              import cam_test_gui

          ModuleNotFoundError: No module named 'cam_test_gui'

          (base) Brians-MacBook-Pro:tests brianhouse$ 

          also I noticed it has a lot of options which ones do you want me to run?

            BrianHouse

            ok, I figured out all the dependencies. I have Camera Test working. I guess I take all the defaults to the prompts and 'connect' to the device"?

              BrianHouse

              Here is the output:

              (base) Brians-MacBook-Pro:tests brianhouse$ python3 cam_test.py 

              Enabled cameras:

                  rgb : color

                 left : mono

                right : mono

                 camd : color

              DepthAI version: 2.21.2.0

              DepthAI path: /Users/brianhouse/Library/Python/3.8/lib/python/site-packages/depthai.cpython-38-darwin.so

              [184430100149620E00] [20.4.2] [0.989] [ColorCamera(8)] [error] Camera not detected on socket: 3

              [184430100149620E00] [20.4.2] [0.990] [MonoCamera(6)] [error] OV7251 only supports THE_480_P/THE_400_P resolutions, defaulting to THE_480_P

              [184430100149620E00] [20.4.2] [0.990] [MonoCamera(4)] [error] OV7251 only supports THE_480_P/THE_400_P resolutions, defaulting to THE_480_P

              Connected cameras:

               -socket RGB   : IMX214 4208 x 3120 focus:auto  - COLOR

               -socket LEFT  : OV7251  640 x  480 focus:fixed - MONO

               -socket RIGHT : OV7251  640 x  480 focus:fixed - MONO

              USB speed: SUPER

              IR drivers: []

              Cam:      rgb           left          right         camd     [host | capture timestamp]

              FPS:   0.00|  0.00  30.15| 30.01  30.16| 30.01   0.00|  0.00Exiting cleanly

                5 days later

                How long did it take to get your replacement?

                Another one with the same issue. Super frustrating way to run support on a forum!

                PS C:\Users\Adam\source\repos\depthai-python\utilities> python cam_test.py

                Enabled cameras:

                rgb : color

                left : mono

                right : mono

                camd : color

                DepthAI version: 2.21.2.0

                DepthAI path: C:\Users\Adam\AppData\Roaming\Python\Python311\site-packages\depthai.cp311-win_amd64.pyd

                [1844301071BC600E00] [1.3] [0.713] [ColorCamera(8)] [error] Camera not detected on socket: 3

                [1844301071BC600E00] [1.3] [0.713] [MonoCamera(6)] [error] OV7251 only supports THE_480_P/THE_400_P resolutions, defaulting to THE_480_P

                [1844301071BC600E00] [1.3] [0.714] [MonoCamera(4)] [error] OV7251 only supports THE_480_P/THE_400_P resolutions, defaulting to THE_480_P

                Connected cameras:

                -socket RGB : IMX214 4208 x 3120 focus:auto - COLOR

                -socket LEFT : OV7251 640 x 480 focus:fixed - MONO

                -socket RIGHT : OV7251 640 x 480 focus:fixed - MONO

                USB speed: SUPER

                IR drivers: []

                Cam: rgb left right camd [host | capture timestamp]

                FPS: 0.00| 0.00 30.00| 30.01 30.00| 30.01 0.00| 0.00Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: 'rgb' (X_LINK_ERROR)'

                Exiting cleanly

                  AdamShortland

                  Hi Adam,

                  I have not received it yet. I also asked them for tracking info which I have not received yet.

                  Brian