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VideoCapture with CAP_DSHOW for camera path

asked 2017-11-02 05:24:25 -0600

pak23 gravatar image

Hello, I want to initialize VideoCapture class with arguments const String &filename, int apiPreference = CAP_DSHOW. I want to use camera device path (my camera: "\\?\usb#vid_041e&pid_4095&mi_00#6&26faed27&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"). Is there any way to use VideoCapture with camera device path and apiPreference CAP_DSHOW? I have checked that CAP_DSHOW is correct apiPreference for my camera (it works when I create VideoCapture with index argument). I know that when I create VideoCapture I should use double "\\" for string. I have checked source files for OpenCV 3.3 and I don't see possibility to create VidecoCapture with filename argument and apiPreference = CAP_DSHOW. Anybody know how to do it? I'm using Windows 10 and Opencv 3.3.

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answered 2017-11-02 05:59:35 -0600

berak gravatar image

updated 2017-11-02 06:00:04 -0600

sad as it is, what you want is impossible. you cannot use your usb device id string, but have to use a number, 0,1,2,..

(even if you avoid opencv's VideoCapture, and write your own DShow graph, you'll have to use the "canonical" name, like "HD Webcam", not the usb device string)

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Asked: 2017-11-02 05:22:15 -0600

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Last updated: Nov 02 '17