How To Install libzvbi-doc on Ubuntu
Posted on April 1, 2023 (Last modified on May 20, 2023 )
3 minutes • 620 words
Introduction
In this tutorial we learn how to install libzvbi-doc on Ubuntu.
What is libzvbi-doc
libzvbi-doc is:
The vertical blanking interval (VBI) is an interval in a television signal that temporarily suspends transmission of the signal for the electron gun to move back up to the first line of the television screen to trace the next screen field.
The vertical blanking interval can be used to carry data, since anything sent during the VBI would naturally not be displayed; various test signals, closed captioning, and other digital data can be sent during this time period. These include information like closed-caption data, Teletext (primarily in Europe), and now Intercast and the ATVEC Internet television encodings.
The Zapping VBI library, in short ZVBI, provides functions to capture and decode VBI data. It is written in plain ANSI C with few dependencies on other tools and libraries, licensed under GPL. Some features:
- Captures raw VBI samples from V4L, V4L2 and FreeBSD BKTR devices, sliced VBI data from Linux DVB devices;
- Implements a VBI Proxy to share one VBI device between multiple applications;
- Has a robust and versatile bit slicer which handles a wide range of data services;
- Functions to capture multiple data services at once, such as Closed Caption (both NTSC and PAL), Teletext, VPS, WSS, XDS;
- Level 3.5 Teletext decoder with support for all Teletext character sets, graphics, 4096 colors, with built-in page cache including search functions;
- Closed Caption decoder which supports roll-up, pop-up and paint-on style caption, color, expanded character set, text attributes and free text placement;
- Renders Teletext and Caption pages, can export to HTML, PNG and other formats.
- Can determine network names;
- Can find Teletext subtitle and program pages;
- Functions to extract data transmissions in Teletext streams (currently Page Format Clear and Independent Data Line Format A);
- Can multiplex and demultiplex DVB VBI PES and TS streams.
This package contains documentation files.
There are three methods to install libzvbi-doc on Ubuntu. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libzvbi-doc Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libzvbi-doc using apt-get by running the following command:
sudo apt-get -y install libzvbi-doc
Install libzvbi-doc Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libzvbi-doc using apt by running the following command:
sudo apt -y install libzvbi-doc
Install libzvbi-doc Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install libzvbi-doc using aptitude by running the following command:
sudo aptitude -y install libzvbi-doc
How To Uninstall libzvbi-doc on Ubuntu
To uninstall only the libzvbi-doc package we can use the following command:
sudo apt-get remove libzvbi-doc
Uninstall libzvbi-doc And Its Dependencies
To uninstall libzvbi-doc and its dependencies that are no longer needed by Ubuntu, we can use the command below:
sudo apt-get -y autoremove libzvbi-doc
Remove libzvbi-doc Configurations and Data
To remove libzvbi-doc configuration and data from Ubuntu we can use the following command:
sudo apt-get -y purge libzvbi-doc
Remove libzvbi-doc configuration, data, and all of its dependencies
We can use the following command to remove libzvbi-doc configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libzvbi-doc
Dependencies
libzvbi-doc have the following dependencies:
References
Summary
In this tutorial we learn how to install libzvbi-doc package on Ubuntu using different package management tools: apt, apt-get and aptitude.