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v4l2loopback-ctl(1)

v4l2loopback-ctl 0.6
February 2020

v4l2loopback-utils

Commandline utilities for the for the v4l2-loopback module

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, format=UYVY, width=640, height=480"), or ’any’
\,/dev/videoX\/
the v4l2-loopback device file you want to act on

COPYRIGHT

Copyright © 2012 IOhannes m zmoelnig <>
Copyright © 2012 Anton Novikov ()

REFERENCED BY

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