How to use multiple USB webcam in Matlab
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Chau Trung
il 14 Mar 2016
Modificato: Wenyin Wei
il 7 Lug 2019
I can't preview 3 figure webcam same time in matlab. Can you help me?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/157715/image.jpeg)
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Walter Roberson
il 14 Mar 2016
Is the problem using 3 webcams, or is the problem with the 4th device specifically? If you only use
D = videoinput('winvideo', 4);
preview(D)
then is it able to preview it?
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Wenyin Wei
il 7 Lug 2019
Modificato: Wenyin Wei
il 7 Lug 2019
Hello Trung,
I also met the problem and fixed it by making the cameras use different ports rather than sharing the same port.
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