Image size won't change from Width/Height: 352/288

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Running motion 4.5.1 on Pi ZeroW Buster.
Camera module is Raspberry Pi Camera Module v1, Sensor: OmniVision OV5647
Max Resolution: 2592×1944, Supported Formats: YUV, RGB, JPEG, H.264, MJPEG, and a few more.

I set the width and height in the conf file to width=1280 height=720 but the output is 352 x 288. I don't know where that has come from because it has never been in the conf file.
I tried to set the the size (1280x720) using a v4l2-ctl command but it quickly reverts back to 352x288.
I am viewing the output in a browser via IP:port.

Can anyone explain why the output is not the size specified in the conf file?
Does anyone know how to fix it.

I'm quite new to all this