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mpromonet / v4l2rtspserver

RTSP Server for V4L2 device capture supporting HEVC/H264/JPEG/VP8/VP9
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1080x720 image to 640x480 image #217

Closed gh2517956473 closed 3 years ago

gh2517956473 commented 3 years ago

V4L2 options： -W width : V4L2 capture width (default 640) -H height: V4L2 capture height (default 480)

Why 640x480 image from Camera is the center crop of the 1080x720 image，The camera's field of view has narrowed.

How can I get 640x480 image Camera is the resized image of the 1080x720 image？I want to keep 640x480 camera's field of view same as 1080x720 camera. Thank you very much！

mpromonet commented 3 years ago

Hi gh2517956473,

v4l2rtspserver doesnot do any image modification (neither resize, crop, ...), this is done by your v4l2 driver. A minimal ioctl is called to the V4L2 driver for (format, width, height, fps) using -W, -H, -F, -f, -G. You can also configure the V4L2 format before running v4l2rtpserver and run it with -f this will keep the capture as it is.

Best Regards, Michel.

gh2517956473 commented 3 years ago

Hi Michel Because now I just change v4l2rtspserve options -W -H, the field of view of image is narrowed. If I configure the V4L2 format before running v4l2rtpserver and run it with -f, can I make 640x480 image have same field of view as 1080x720 image? Thank you very much！