qv4l2 - A test bench application for video4linux devices
qv4l2 [-R] [-h] [-d <dev>]
[-r <dev>] [-V <dev>] [-S <dev>]
The qv4l2 tool is used to test video4linux capture and output
devices, either video, vbi, radio or swradio. This application can also
serve as a generic video/TV viewer application or as a video generator for
video output devices.
However, it does not (yet) support compressed video streams other
than MJPEG
- -d,
--device=<dev>
- Use device <dev> as the video device. If <dev> is a number,
then /dev/video<dev> is used.
- -V,
--vbi-device=<dev>
- Use device <dev> as the vbi device. If <dev> is a number, then
/dev/vbi<dev> is used.
- -r,
--radio-device=<dev>
- Use device <dev> as the radio device. If <dev> is a number,
then /dev/radio<dev> is used.
- -S,
--sdr-device=<dev>
- Use device <dev> as the SDR device. If <dev> is a number, then
/dev/swradio<dev> is used.
- -R, --raw
- Open device in raw mode, i.e. without using the libv4l2 wrapper
functions.
- -h, --help
- Prints the help message.
- Ctrl + W
- Closes the window and stops capture
- Ctrl + F
- Resize Capture Window to frame size
On success, it returns 0. Otherwise, it will return the error
code.
Report bugs to Hans Verkuil <hverkuil@xs4all.nl>