OAK-1 POE X_LINK_ERROR

I had one camera run in simple playback, non-recording mode for 10+ days without issue until I stopped it. The camera was plugged into a Netgear GS308P (inexpensive 8-port, 4 of which are PoE). This is the script I ran for that, taken from the Luxonis provided samples, fwiw:

#!/usr/bin/env python3

import cv2
import depthai as dai

# aicam6
aicamip="192.168.1.6"

found, device_info = dai.Device.getDeviceByMxId(aicamip)
print(aicamip)

print(device_info)

if not found:
    raise RuntimeError("Device not found!")

# Create pipeline
pipeline = dai.Pipeline()

# Define source and output
camRgb = pipeline.createColorCamera()
xoutVideo = pipeline.createXLinkOut()

xoutVideo.setStreamName("video")

# Properties
camRgb.setBoardSocket(dai.CameraBoardSocket.RGB)
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
with dai.Device(pipeline) as device:

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

    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 cv2.waitKey(1) == ord('q'):
            break

I do have some other cameras that I have been recording from, using this:

#!/usr/bin/env python3

import depthai as dai

aicamip="192.168.1.6"

found, device_info = dai.Device.getDeviceByMxId(aicamip)
print(aicamip)

if not found:
    raise RuntimeError("Device not found!")

# Create pipeline
pipeline = dai.Pipeline()

# Define sources and output
camRgb = pipeline.createColorCamera()
videoEnc = pipeline.createVideoEncoder()
xout = pipeline.createXLinkOut()

xout.setStreamName('h265')

# Properties
camRgb.setBoardSocket(dai.CameraBoardSocket.RGB)
camRgb.setResolution(dai.ColorCameraProperties.SensorResolution.THE_4_K)
videoEnc.setDefaultProfilePreset(3840, 2160, 30, dai.VideoEncoderProperties.Profile.H265_MAIN)

# Linking
camRgb.video.link(videoEnc.input)
videoEnc.bitstream.link(xout.input)

# Connect to device and start pipeline
with dai.Device(pipeline, device_info) as device:

    # Output queue will be used to get the encoded data from the output defined above
    q = device.getOutputQueue(name="h265", maxSize=30, blocking=True)

    # The .h265 file is a raw stream file (not playable yet)
    with open('ai-cam6-deer.h265', 'wb') as videoFile:
        print("Press Ctrl+C to stop encoding...")
        try:
            while True:
                h265Packet = q.get()  # Blocking call, will wait until a new data has arrived
                h265Packet.getData().tofile(videoFile)  # Appends the packet data to the opened file
        except KeyboardInterrupt:
            # Keyboard interrupt (Ctrl + C) detected
            pass

    print("To view the encoded data, convert the stream file (.h265) into a video file (.mp4) using a command below:")
    print("ffmpeg -framerate 30 -i video.h265 -c copy video.mp4")

This sometimes terminates for unknown reasons, but typically can run for hours/days. Causes for outages can include power or network. You could leave a ping running to the device and another device similarly situated on the network and see if there are issues. Also, have your PoE switch on UPS/battery.

Happy hacking!

erik Will do! I had just updated to 2.17.3.1 this morning aaaaaand now I'm at 2.17.4.0!

But to the original question - what is the most correct way to restart the stream?

Thank you!