NAME¶
v4l2loopback-ctl - control v4l2 loopback devices
DESCRIPTION¶
Usage:¶
- utils/v4l2loopback-ctl [command] [args]
Commands:¶
- set-fps <FPS> /dev/videoX
- Set device fps (if format is already negotiated).
- set-timeout-image <IMAGE> /dev/videoX
- Set timeout on device, and optionally the placeholder
picture, instead of default null frame.
- set-caps <CAPS> /dev/videoX
- Fix format for the device (using GStreamer caps), so it
will be maintained until reset, regardless of future readers/writers.
OPTIONS¶
- FPS
- frames per second, either as integer ('30') or fraction
('50/2')
- IMAGE
- image file ("no-input.png"), or
'videotestsrc'
- CAPS
- GStreamer caps ("video/x-raw-yuv, width=640,
height=480"), or 'any'
- /dev/videoX
- the v4l2-loopback device file you want to act on
COPYRIGHT¶
Copyright © 2012 IOhannes m zmoelnig <zmoelnig@iem.at>
Copyright © 2012 Anton Novikov (random.plant@gmail.com)
