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<p class="MsoNormal"><span lang="EN-US">Package: pygame, Version: 1.9.4.post1 (Location: /usr/lib/python3/dist-packages)<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><br>
I'm unable to take an image of an usb-camera highter than 160x120 resolution on Raspberry pi 4 with python3, my desired resolution is 640x480.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">setup:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">RPI4 (1gb), latest raspbian buster, fully updated (rpi-update): Linux robopi 4.19.88-v7l+ #1284 SMP Wed Dec 11 13:51:57 GMT 2019 armv7l GNU/Linu usb camera: Logitech, Inc. HD Webcam C525<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">software: <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> Python 3.7.3 <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> Pygame Version: 1.9.4.post1 (Location: /usr/lib/python3/dist-packages)<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> pip3: pip 18.1 from /usr/lib/python3/dist-packages/pip (python 3.7)<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">minimal script I use: (executed as 'sudo python3 test.py')<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> pygame.init()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> pygame.camera.init()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> cam = pygame.camera.Camera("/dev/video0",(640,480))<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> cam.start()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> image = cam.get_image()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> pygame.image.save(image,'demo_camera.jpg')<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> cam.stop()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"> pygame.camera.quit()<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">behaviour:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">script hangs when calling cam.get_image() when I change the resolution to 160x120 (or lower) it works and generates an image of 160x120<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">When I put the sd card into my RPI3 the script works with my desired resolution of 640x480.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">The camera itself is able to capture images of 640x480, the following command results in a picture of requested resolution:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">fswebcam -r 640x480 image.jpg<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">fswebcam -r 1280x720 image.jpg<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">relevant information:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">the usb camera creates 2 /dev/video devices, behaviour described here by someone else:
</span><a href="https://raspberrypi.stackexchange.com/questions/100395/single-webcam-using-dev-video0-and-dev-video1"><span lang="EN-US">https://raspberrypi.stackexchange.com/questions/100395/single-webcam-using-dev-video0-and-dev-video1</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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