V4L2-CTL(1) User Commands V4L2-CTL(1) (NAME) v4l2-ctl - video4linux (SYNOPSIS) v4l2-ctl [-h] [-d ] [ ] (DESCRIPTION) v4l2-ctl video4linux vbi swradio ( ) . V4L2 API . (OPTIONS) -A, --list-devices v4l. -z bus info -z . -d, --device V4L2. /dev/video . -z (entity name) (interface ID 0x) (topology) bus info -z . -v, --verbose (verbose). --version . -w, --wrapper libv4l2 V4L2. v4l2-ctl V4L2 . -h, --help . --help-io // . --help-meta // (metadata). --help-misc . --help-overlay // overlay framebuffer. --help-sdr // (SDR). --help-selection ( / cropping and composing). --help-stds SDTV . --help-streaming (streaming). --help-subdev v4l-subdevX. --help-tuner . --help-vbi // VBI. --help-vidcap // / (video capture). --help-vidout // (video output). --help-edid / EDID. --help-all . --all . -C, --get-ctrl [,...] [VIDIOC_G_EXT_CTRLS]. -c, --set-ctrl =[,=...] [VIDIOC_S_EXT_CTRLS]. -D, --info [VIDIOC_QUERYCAP]. -e, --out-device --device. /dev/video . -z ( 0x) bus info -z . -E, --export-device DMA. /dev/video . -z ( 0x) bus info -z . -z, --media-bus-info . -d -e -E . : v4l2-ctl -z platform:vivid-000 -d vivid-000-vid- cap -k, --concise . -l, --list-ctrls [VIDIOC_QUERYCTRL]. -L, --list-ctrls-menus [VIDIOC_QUERYMENU]. -r, --subset [,,]+ N- / (, ) . --list-devices-input --list-devices . --list-devices-output --list-devices . --log-status [VIDIOC_LOG_STATUS]. --get-priority [VIDIOC_G_PRIORITY]. --set-priority [VIDIOC_S_PRIORITY]. 1 () 2 () 3 (). --silent . --sleep QUERYCAP . (EXIT STATUS) 0 . . (EXAMPLES) /dev/video1: v4l2-ctl -d1 -D I/O MMAP /dev/video0: v4l2-ctl -d0 --stream-mmap /dev/video0 : v4l2-ctl --stream-mmap --stream-count=1 --stream-to=file.raw /dev/video0 : v4l2-ctl --stream-mmap --stream-to-host 'qvidcap -p' . /dev/video0 DMABUF /dev/video2: v4l2-ctl --stream-dmabuf --export-device /dev/video2 -- (memory-to- memory): v4l2-ctl --stream-mmap --stream-out-mmap (/dev/video1) (/dev/video2): v4l2-ctl -d1 --stream-mmap --out-device /dev/video2 --stream-out- dmabuf (BUGS) . linux-media@vger.kernel.org . v4l-utils 1.32.0 March 2015 V4L2-CTL(1)