QV4L2(1) 1.26.1"" QV4L2(1)

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

Use device <dev> as the video device. If <dev> is a number, then /dev/video<dev> is used.
Use device <dev> as the vbi device. If <dev> is a number, then /dev/vbi<dev> is used.
Use device <dev> as the radio device. If <dev> is a number, then /dev/radio<dev> is used.
Use device <dev> as the SDR device. If <dev> is a number, then /dev/swradio<dev> is used.
Open device in raw mode, i.e. without using the libv4l2 wrapper functions.
Prints the help message.

Open device
Open device in raw mode
Close the device
Start capture
Resize Capture Window to frame size
Exit the application

Closes the window and stops capture
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>

March 2015 v4l-utils