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`depthai_demo.py -dnn` or disable UI toggle crashes with "Queue for stream name 'nnInput' doesn't exist"

See original GitHub issue

Attempting to disable NN with depthai_demo.py -dnn crashes with “Queue for stream name ‘nnInput’ doesn’t exist”

Setup

Microsoft Windows [Version 10.0.19044.1469]
depthai main at f83ff69db8ad9cc4fe174e59ee48ad81c59867bb
Python 3.9.5

Repro

c:\python39\python.exe depthai_demo.py -dnn

Result

C:\njs\depthai>c:\python39\python.exe depthai_demo.py -dnn
Using depthai module from:  C:\Users\dale\AppData\Roaming\Python\Python39\site-packages\depthai.cp39-win_amd64.pyd
Depthai version installed:  2.14.1.0.dev+27fa4519f289498e84768ab5229a1a45efb7e4df
Setting up demo...
Available devices:
[0] 14442C10C1A1C6D200 [X_LINK_UNBOOTED]
USB Connection speed: UsbSpeed.SUPER
  File "C:\njs\depthai\depthai_demo.py", line 633, in run
    self.instance.run_all(self.conf)
  File "C:\njs\depthai\depthai_demo.py", line 121, in run_all
    self.run()
  File "C:\njs\depthai\depthai_demo.py", line 310, in run
    self._pv.createQueues(self._device, self._createQueueCallback)
  File "c:\njs\depthai\depthai_sdk\src\depthai_sdk\managers\preview_manager.py", line 88, in createQueues
    self.outputQueues.append(device.getOutputQueue(name=name, maxSize=1, blocking=False))
Queue for stream name 'nnInput' doesn't exist

The crash can also be reproduced by

Run c:\python39\python.exe depthai_demo.py
Click the top-right AI “enabled” toggle to disable it.
Click “apply and restart”

Same crash will occur.

Expected

Demo runs with all camera feeds displayed (color, depth, etc.) except for the NN/AI feeds. My goal is to get maximum FPS (~120fps) for color and mono cameras in the demo.

Issue Analytics

State:
Created 2 years ago
Comments:8 (4 by maintainers)

Top GitHub Comments

1reaction

VanDavvcommented, Feb 12, 2022

@diablodale @sbelhareth3 could you check this PR? https://github.com/luxonis/depthai/pull/637 It resolves the issue on my side, hopefully will be merged soon

1reaction

sbelhareth3commented, Feb 12, 2022

Can we notify a member of the Luxonis team of this issue? Such as @Erol444 @Luxonis-Brandon @alex-luxonis or someone else? This is my first time participating in a Github forum so I’m not sure what the protocol and social expectations are.

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