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如何使用 v4l2-ctl 列出所有 V4L 摄像头

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你可以使用以下命令列出所有连接的摄像头

list_v4l_cameras.sh
v4l2-ctl --list-devices

示例输出：

v4l2_list_output.txt
bcm2835-codec-decode (platform:bcm2835-codec):
        /dev/video10
        /dev/video11
        /dev/video12
        /dev/video18
        /dev/video31
        /dev/media0

bcm2835-isp (platform:bcm2835-isp):
        /dev/video13
        /dev/video14
        /dev/video15
        /dev/video16
        /dev/video20
        /dev/video21
        /dev/video22
        /dev/video23
        /dev/media2
        /dev/media3

rpivid (platform:rpivid):
        /dev/video19
        /dev/media1

HD USB Camera: HD USB Camera (usb-0000:01:00.0-1.2):
        /dev/video0
        /dev/video1
        /dev/media4
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