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Changing camera resolution in Python

asked 2014-11-23 03:13:51 -0500

Jesus151089 gravatar image

Hello,

I´m trying to change my camera resolution to 320X240 on Raspberry Pi using Python. This link http://docs.opencv.org/master/doc/py_tutorials/py_gui/py_video_display/py_video_display.html#display-video says that one can type the following to change the parameters

ret = cap.set(3,320) and ret = cap.set(4,240)

I have not figured out how this work. Has anyone faced the same situation?

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First of all you need to be sure that your camera allows the changing of the resultion through its connection. Secondly I suggest using the correct parameters instead of using integer values. If the changed in the process, then it won't work anymore. Try this code

 ret = cap.set(CV_CAP_PROP_FRAME_WIDTH,320);
 ret = cap.set(CV_CAP_PROP_FRAME_HEIGHT,240);

Good luck!

StevenPuttemans gravatar imageStevenPuttemans ( 2014-11-26 07:49:44 -0500 )edit

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answered 2014-11-25 16:35:18 -0500

ret is the return value from the function set(). I assume if successful ret = 1, if unsuccessful ret = 0.

The first parameter states what is being set, 3 = width and 4 = height.

The second parameter states the value to be set to.

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Asked: 2014-11-23 03:13:51 -0500

Seen: 7,654 times

Last updated: Nov 25 '14