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Using monitor / webcam from Cura maxes out my CPU


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Posted · Using monitor / webcam from Cura maxes out my CPU

Hi I have a problem with Cura "monitor / webcam" almost maxing out my CPU.


When Cura is idle it uses around 1.0% - 1.5% CPU, but activating the webcam brings it to 398% (400% = 100% 1core x 4)

Using the stream from Cura connect is around 60% (Chrome) Still high for this bad quality.




macOS 10.13.6 (10.14.5 same problem)  

CPU: 2.3 GHz Core i7-3615Q
GPU: GeForce GT 650m
Cura 4.1 (same problem 4.0)
Printer S5


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    Posted · Using monitor / webcam from Cura maxes out my CPU

    The problem is not Cura, because you get the same high CPU load when watching the cam stream directly in your browser. So I guess the high CPU load is caused by decoding the video stream and the technology used by the browser is not efficient enough.


    I got good results with much lower CPU consumption when using VLC to watch the video stream.

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    Posted (edited) · Using monitor / webcam from Cura maxes out my CPU

    How do you use VLC for the stream? 


    Just as as comparison youtube takes from 15-20% for an 1080p video in same browser.

    Edited by NBull
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