qv4l21
A test bench application for video4linux devices
Usage
qv4l2 [-R]
[-h]
[-d
<dev>]
[-r
<dev>]
[-V
<dev>]
[-S
<dev>]
Overview
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.
Releases
7 releases since Debian 8 (Jessie); the text changed 6 times.