• 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