Beyond Linux® From Scratch (systemd Edition) - Version r11.3-489

Chapter 42. Multimedia Libraries and Drivers

v4l-utils-1.24.1

Introduction to v4l-utils

v4l-utils provides a series of utilities for media devices, allowing to handle the proprietary formats available at most webcams (libv4l), and providing tools to test V4L devices.

[Note]

Note

Development versions of BLFS may not build or run some packages properly if dependencies have been updated since the most recent stable versions of the book.

Package Information

v4l-utils Dependencies

Required

LLVM-15.0.7 (with target BPF)

Recommended

alsa-lib-1.2.9, GLU-9.0.2, libjpeg-turbo-2.1.5.1, and Qt-5.15.9

Optional

Doxygen-1.9.6 and SDL2-2.26.5

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/v4l-utils

Installation of v4l-utils

Install v4l-utils by running the following commands: 

./configure --prefix=/usr     \
            --sysconfdir=/etc \
            --disable-static  &&
make

This package does not come with a test suite.

Now, as the root user: 

make -j1 install

Contents

Installed Programs: cec-compliance, cec-ctl, cec-follower, cx18-ctl, decode_tm6000, dvb-fe-tool, dvb-format-convert, dvbv5-daemon, dvbv5-scan, dvbv5-zap, ir-ctl, ir-keytable, ivtv-ctl, media-ctl, qv4l2, qvidcap, rds-ctl, v4l2-compliance, v4l2-ctl, v4l2-dbg, and v4l2-sysfs-path
Installed Library: libdvbv5.so, libv4l1.so, libv4l2.so, libv4l2rds.so, libv4lconvert.so, v4l1compat.so, and v4l2convert.so
Installed Directories: /etc/rc_keymaps, /lib/udev/rc_keymaps, /usr/include/libdvbv5, and /usr/lib/libv4l

Short Descriptions

cx18-ctl

is a tool to handle cx18 based devices

decode_tm6000

decodes multiplexed formats from TM5600/TM6000 USB devices

dvb-fe-tool

is a command line tool for digital TV services

dvb-format-convert

is a tool meant to convert among different file formats. It is compliant with version 5 of the DVB API

dvbv5-scan

is a command line frequency scanning tool for digital TV services that are compliant with version 5 of the DVB API

dvbv5-zap

is a command line tuning tool for digital TV services that is compliant with version 5 of the DVB API

ir-keytable

is a tool that lists the Remote Controller devices, allows one to get/set IR keycode/scancode tables, test events generated by IR, and to adjust other Remote Controller options

ivtv-ctl

is a utility that can control many card settings, like changing the inputs from tuner to svideo or composite, setting video resolution or changing video mode (PAL, SECAM, NTSC)

media-ctl

is a utility used to configure V4L2 devices

qv4l2

is used to test video4linux capture devices

qvidcap

is used to capture video from a V4L2 device

rds-ctl

is a utility for decoding raw RDS data from V4L2 Radio devices and offers simple ways to access the received RDS information

v4l2-compliance

is a compliance test tool

v4l2-ctl

is a tool to control v4l2 controls from the cmdline

v4l2-dbg

is a tool to directly get and set registers of v4l2 devices

v4l2-sysfs-path

checks the media devices installed on a machine and the corresponding device nodes