#### Beyond Linux® From Scratch (systemd Edition) - Version 10.1

### Chapter 42. Multimedia Libraries and Drivers

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# v4l-utils-1.20.0

## 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.

This package is known to build and work properly using an LFS-10.1 platform.

### Package Information

- Download (HTTP): https://www.linuxtv.org/downloads/v4l-utils/v4l-utils-1.20.0.tar.bz2

- Download MD5 sum: 46f9e2c0b2fdccd009da2f7e1aa87894

- Download size: 1.9 MB

- Estimated disk space required: 97 MB

- Estimated build time: 0.5 SBU (using parallelism=4)

### v4l-utils Dependencies

#### Required

LLVM-11.1.0 (with target BPF)

#### Recommended

alsa-lib-1.2.4, GLU-9.0.1, libjpeg-turbo-2.0.6, and Qt-5.15.2

#### Optional

Doxygen-1.9.1 and SDL2-2.0.14

User Notes: http://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 testsuite.

Now, as the `root` user:

    make 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, 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
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

Last updated on 2021-02-21 20:38:24 -0800

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