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I'm working on a project with Raspberry Pi 3 and camera module v2.

I'm using OpenCV and raspicam.

I want to know the maximum resolution I can use. The datasheet says 3280*2464, but I get errors when using that resolution:

mmal: mmal_vc_port_enable: failed to enable port vc.ril.camera:out:1(BGR3): ENOSPC
mmal: mmal_port_enable: failed to enable port vc.ril.camera:out:1(BGR3)(0x2022b60) (ENOSPC)
camera video callback2 erroropen Failed to create camera component/home/pi/repo/raspicam/src/private/private_impl.cpp 103

1920*1920 works fine, but I would like to know exactly how high my resolution can be before I get the error.

How can I debug the error message provided? And how can I know the the maximum resolution of the camera before I get the error message? (Please don't suggest trial-and-error)

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From raspicam , Release notes:

Note: when using the full resolution video callbacks with the full resolution of the Raspberry Pi Camera v2, you will likely get an error such as mmal: mmal_vc_port_enable: failed to enable port vc.ril.camera:out:1(BGR3): ENOSPC. In order to fix this increase your GPU memory to at least 256MB.

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  • My question is regarding image in general, not necessarily video. Datasheet claims 3280*2464. I will try the trick with setting a too high resolution (your latest link) to make opencv automatically set the highest one, but I'm not entirely convinced it will work (since I get the error when it's too high).
    – birgersp
    Commented Mar 9, 2020 at 8:10
  • @gromit190, please see my new edited answer.
    – Ephemeral
    Commented Mar 9, 2020 at 8:30

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