Help on using multiple cameras

tonya

I have five cameras.

I took the multiple camera example and here are the errors:

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python>python multipleDevices.py

===Connected to 18443010B1C8690F00

MXID: 18443010B1C8690F00

Num of cameras: 1

USB speed: UsbSpeed.SUPER

Board name: OAK-1

←[31mF: [global] [ 0] [ThreadN] dispatcherResponseServe:928 no request for this response: XLINK_READ_REL_RESP 1

←[0m

[18443010B1C8690F00] [1.1.1.1] [1731631485.297] [host] [warning] Device crashed, but no crash dump could be extracted.

Then I have written a few of my own codes to try to talk to multiple cameras. Here is the code:

#!/usr/bin/env python3

# Show image from two cameras

import cv2

import depthai as dai

# List all the cameras available

idev = 0

for device in dai.Device.getAllAvailableDevices():

print(f"{device.name} {device.getMxId()} {device.state}")

idev = idev + 1

# Need at least two cameras.

if idev < 2:

print( "Found {idev} cameras. Need at least two cameras." )

# Create pipeline

pipeline1 = dai.Pipeline()

pipeline2 = dai.Pipeline()

# Define source and output

camRgb1 = pipeline1.create(dai.node.ColorCamera)

camRgb2 = pipeline2.create(dai.node.ColorCamera)

xoutVideo1 = pipeline1.create(dai.node.XLinkOut)

xoutVideo2 = pipeline2.create(dai.node.XLinkOut)

xoutVideo1.setStreamName("video1")

xoutVideo2.setStreamName("video2")

# Properties

camRgb1.setBoardSocket(dai.CameraBoardSocket.CAM_A)

camRgb1.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1080_P)

camRgb1.setVideoSize(1920, 1080)

camRgb2.setBoardSocket(dai.CameraBoardSocket.CAM_A)

camRgb2.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1080_P)

camRgb2.setVideoSize(1920, 1080)

xoutVideo1.input.setBlocking(False)

xoutVideo2.input.setQueueSize(1)

xoutVideo1.input.setBlocking(False)

xoutVideo2.input.setQueueSize(1)

# Linking

camRgb1.video.link(xoutVideo1.input)

camRgb2.video.link(xoutVideo2.input)

# Connect to device and start pipeline

camera = dai.Device.getAllAvailableDevices()

device_info1 = dai.DeviceInfo(camera[0].getMxId()) # MXID

device_info2 = dai.DeviceInfo(camera[1].getMxId())

with dai.Device(pipeline1, device_info1) as device1:

with dai.Device(pipeline2, device_info2) as device2:

    video1 = device1.getOutputQueue(name="video1", maxSize=1, blocking=False)

    video2 = device2.getOutputQueue(name="video2", maxSize=1, blocking=False)

    

    cnt = 0

    while True:

        videoIn1 = video1.get()

        videoIn2 = video2.get()

        # Get BGR frame from NV12 encoded video frame to show with opencv

        # Visualizing the frame on slower hosts might have overhead

        cv2.imshow("video1", videoIn1.getCvFrame())

        cv2.imshow("video2", videoIn2.getCvFrame())      

        if cnt == 0:

            cv2.resizeWindow( "video1", 200, 200 )

            cv2.resizeWindow( "video2", 200, 200 )

            cv2.moveWindow( "video1", 100, 100 )

            cv2.moveWindow( "video2", 300, 100 )



        cnt = cnt + 1

        if cv2.waitKey(100) == ord('q'):

            break

I did see two windows come up. Here are the error messages:

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python>python vid2.py

1.1.1.1 18443010B1C8690F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.1.2 18443010A175680F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.3 18443010E109690F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.4 1844301081D1650F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.2 1844301081D4650F00 XLinkDeviceState.X_LINK_UNBOOTED

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\vid2.py:58: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline1, device_info1) as device1:

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\vid2.py:59: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline2, device_info2) as device2:

←[31mF: [global] [ 0] [ThreadN] dispatcherResponseServe:928 no request for this response: XLINK_READ_REL_RESP 1

←[0m

[18443010A175680F00] [1.1.1.2] [1731631676.974] [host] [warning] Device crashed, but no crash dump could be extracted.

Traceback (most recent call last):

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\vid2.py", line 68, in <module>

videoIn2 = video2.get()

           ^^^^^^^^^^^^

RuntimeError: Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: 'video2' (X_LINK_ERROR)'

tonya

I was trying to work with each camera in a different process. Plugging in the second camera seems to break the code that is reading from the first camera

@python a1.py 0 300 300 100 100

0 300 300 100 100

[2024-11-14 17:10:51.910] [depthai] [warning] skipping X_LINK_UNBOOTED device having name "1.1.1.1"

[2024-11-14 17:10:51.913] [depthai] [warning] skipping X_LINK_UNBOOTED device having name "1.1.4"

[2024-11-14 17:10:51.916] [depthai] [warning] skipping X_LINK_UNBOOTED device having name "1.1.2"

1.1.1.2 18443010A175680F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.3 18443010E109690F00 XLinkDeviceState.X_LINK_UNBOOTED

[2024-11-14 17:10:52.713] [depthai] [warning] skipping X_LINK_UNBOOTED device having name "1.1.1.1"

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py:47: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline, device_info1) as device:

Traceback (most recent call last):

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py", line 47, in <module>

with dai.Device(pipeline, device_info1) as device:

     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to boot device!

@python a1.py 0 400 400 100 100

0 400 400 100 100

1.1.3 18443010E109690F00 XLinkDeviceState.X_LINK_UNBOOTED

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py:47: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline, device_info1) as device:

[18443010E109690F00] [1.1.3] [1731633175.574] [host] [warning] Device crashed, but no crash dump could be extracted.

Traceback (most recent call last):

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py", line 53, in <module>

videoIn = video.get()

          ^^^^^^^^^^^

RuntimeError: Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: 'video' (X_LINK_ERROR)'

#!/usr/bin/env python3

import cv2

import depthai as dai

import sys

args = sys.argv;

cam = int(args[1]);

wx = int(args[2])

wy = int(args[3])

ox = int(args[4])

oy = int(args[5])

print( f"{cam} {wx} {wy} {ox} {oy}")

# List all the cameras available

idev = 0

for device in dai.Device.getAllAvailableDevices():

print(f"{device.name} {device.getMxId()} {device.state}")

idev = idev + 1

# Create pipeline

pipeline = dai.Pipeline()

# Define source and output

camRgb = pipeline.create(dai.node.ColorCamera)

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

xoutVideo.setStreamName("video")

# Properties

camRgb.setBoardSocket(dai.CameraBoardSocket.CAM_A)

camRgb.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1080_P)

camRgb.setVideoSize(1920, 1080)

xoutVideo.input.setBlocking(False)

xoutVideo.input.setQueueSize(1)

# Linking

camRgb.video.link(xoutVideo.input)

# Connect to device and start pipeline

camera = dai.Device.getAllAvailableDevices()

device_info1 = dai.DeviceInfo(camera[cam].getMxId()) # MXID

# Connect to device and start pipeline

with dai.Device(pipeline, device_info1) as device:

video = device.getOutputQueue(name="video", maxSize=1, blocking=False)

cnt = 0



while True:

    videoIn = video.get()

    # Get BGR frame from NV12 encoded video frame to show with opencv

    # Visualizing the frame on slower hosts might have overhead

    cv2.imshow("video", videoIn.getCvFrame())

    if cnt == 0:

        cv2.resizeWindow( "video", wx, wy )

        cv2.moveWindow( "video", ox, oy )

    cnt = cnt + 1

    if cv2.waitKey(100) == ord('q'):

        print( "Finished.")

        break

jakaskerl

Hi tonya

Power-cycle the device if you are experiencing [depthai] [warning] skipping X_LINK_UNBOOTED device having name "1.1.1.1".
Make sure your depthai version is the latest.
Try with luxonis/depthai-experimentsblob/master/gen2-multiple-devices/main.py since we know it should be working.
Make sure you have adequate USB power supply

Thanks,
Jaka

jakaskerl

jakaskerl Make sure you have adequate USB power supply

Can you confirm?

Thanks,
Jaka

tonya

The main.py script doesn't help. All the cameras are available and then main.py has errors and never displays an image

// Here are the results from these lines of code

for device in dai.Device.getAllAvailableDevices():

print(f"{device.name} {device.getMxId()} {device.state}")

1.1.1.1 1844301081D4650F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.1.2 18443010B1C8690F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.1.4 18443010A175680F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.3 18443010E109690F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.2 1844301081D1650F00 XLinkDeviceState.X_LINK_UNBOOTED

// Here are results from main.py

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python>python main.py

Found 5 devices

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py:38: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

Exception in thread Thread-2 (worker):

Exception in thread Thread-3 (worker):

Traceback (most recent call last):

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 1045, in _bootstrap_inner

Traceback (most recent call last):

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 1045, in _bootstrap_inner

self.run()

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 982, in run

self.run()

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 982, in run

self._target(\*self._args, \*\*self._kwargs)

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py", line 38, in worker

self._target(\*self._args, \*\*self._kwargs)

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py", line 38, in worker

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to boot device!

                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to boot device!

Exception in thread Thread-5 (worker):

Traceback (most recent call last):

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 1045, in _bootstrap_inner

self.run()

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 982, in run

self._target(\*self._args, \*\*self._kwargs)

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py", line 38, in worker

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to boot device!

Exception in thread Thread-1 (worker):

Traceback (most recent call last):

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 1045, in _bootstrap_inner

self.run()

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 982, in run

self._target(\*self._args, \*\*self._kwargs)

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py", line 38, in worker

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to find device (1.1.1.1), error message: X_LINK_DEVICE_NOT_FOUND

Exception in thread Thread-4 (worker):

Traceback (most recent call last):

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 1045, in _bootstrap_inner

self.run()

File "C:\Users\tonya\AppData\Local\Programs\Python\Python311\Lib\threading.py", line 982, in run

self._target(\*self._args, \*\*self._kwargs)

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\main.py", line 38, in worker

device: dai.Device = stack.enter_context(dai.Device(openvino_version, dev_info, False))

                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to find device (1.1.3), error message: X_LINK_DEVICE_NOT_FOUND

tonya

Inconsistent results all day

\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5>python a1.py 0 100 100

0 100 100

1.1.1.1 1844301081D4650F00 XLinkDeviceState.X_LINK_UNBOOTED

1.1.3 1844301081D1650F00 XLinkDeviceState.X_LINK_UNBOOTED

Connecting to 0 with MxID 1844301081D4650F00

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py:52: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline, device_info1) as device:

Traceback (most recent call last):

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py", line 52, in <module>

with dai.Device(pipeline, device_info1) as device:

     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to find device after booting, error message: X_LINK_DEVICE_NOT_FOUND

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5>python a1.py 0 100 100

0 100 100

1.1.1.1 1844301081D4650F00 XLinkDeviceState.X_LINK_UNBOOTED

Connecting to 0 with MxID 1844301081D4650F00

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py:52: DeprecationWarning: Use constructor taking 'UsbSpeed' instead

with dai.Device(pipeline, device_info1) as device:

Traceback (most recent call last):

File "c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5\a1.py", line 52, in <module>

with dai.Device(pipeline, device_info1) as device:

     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

RuntimeError: Failed to find device after booting, error message: X_LINK_DEVICE_NOT_FOUND

c:\Users\tonya\OneDrive - Viewray Systems Inc\Documents\Python\diff5>

Here is the script I am using, cant upload python??

#!/usr/bin/env python3

import cv2

import depthai as dai

import sys

args = sys.argv;

cam = int(args[1]);

ox = int(args[2])

oy = int(args[3])

print( f"{cam} {ox} {oy}")

# List all the cameras available

idev = 0

for device in dai.Device.getAllAvailableDevices():

print(f"{device.name} {device.getMxId()} {device.state}")

idev = idev + 1

# Create pipeline

pipeline = dai.Pipeline()

# Define source and output

camRgb = pipeline.create(dai.node.ColorCamera)

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

xoutVideo.setStreamName("video")

# Properties

camRgb.setBoardSocket(dai.CameraBoardSocket.CAM_A)

camRgb.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1080_P)

camRgb.setVideoSize(1920, 1080)

imageWidth = int(1920/2)

imageHeight = int(1080/2)

camRgb.setPreviewSize( imageWidth, imageHeight )

# 300x300 will be the preview frame size, available as 'preview' output of the node

camRgb.setInterleaved(False)

xoutVideo.input.setBlocking(False)

xoutVideo.input.setQueueSize(1)

# Linking

camRgb.preview.link(xoutVideo.input)

# Connect to device and start pipeline

camera = dai.Device.getAllAvailableDevices()

device_info1 = dai.DeviceInfo(camera[cam].getMxId()) # MXID

print( f"Connecting to {cam} with MxID {camera[cam].getMxId()}" )

# Connect to device and start pipeline

with dai.Device(pipeline, device_info1) as device:

video = device.getOutputQueue(name="video", maxSize=1, blocking=False)

cnt = 0



while True:

    videoIn = video.get()

    # Get BGR frame from NV12 encoded video frame to show with opencv

    # Visualizing the frame on slower hosts might have overhead

    cv2.imshow("video", videoIn.getCvFrame())

    if cnt == 0:

        cv2.resizeWindow( "video", imageWidth, imageHeight )

        cv2.moveWindow( "video", ox, oy )

    cnt = cnt + 1

    if cv2.waitKey(100) == ord('q'):

        print( "Finished.")

        break

tonya

Jaka,

I cannot confirm. I am ordering a power supply and we can talk later in the week.

I put a photo of my setup here.

jakaskerl

tonya
Ok, this looks like the power is coming directly from the PC. LMK when you get a PS.

Thanks,
Jaka