Man page - qv4l2(1)

Packages contains this manual

Package:  qv4l2
apt-get install qv4l2

Manuals in package:
• qv4l2(1)

Manual

QV4L2

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
HOTKEYS
Main Window
Capture Window
EXIT STATUS
BUGS

---

NAME

qv4l2 - A test bench application for video4linux devices

SYNOPSIS

qv4l2 [ -R ] [ -h ] [ -d <dev> ] [ -r <dev> ] [ -V <dev> ] [ -S <dev> ]

DESCRIPTION

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

OPTIONS

-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.

HOTKEYS

Main Window

Ctrl + O

Open device

Ctrl + R

Open device in raw mode

Ctrl + W

Close the device

Ctrl + V

Start capture

Ctrl + F

Resize Capture Window to frame size

Ctrl + Q

Exit the application

Capture Window

Ctrl + W

Closes the window and stops capture

Ctrl + F

Resize Capture Window to frame size

EXIT STATUS

On success, it returns 0. Otherwise, it will return the error code.

BUGS

Report bugs to Hans Verkuil <hverkuil@xs4all.nl>

---