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)

v4l2loopback-ctl 0.6                                July 2018                                V4L2LOOPBACK-CTL(1)