Archives For Howtos

Avidemux video editor

Avidemux video editor released version 2.7.4 today with tons of bug-fixes. Here’s how to install it in Ubuntu 18.04, Ubuntu 19.04.

Aivdemux 2.7.4 release highlights:

  • Detect and warn when cut points in H.264 video streams may result in playback issues despite being on keyframes
  • Update to the 4.1.4 release
  • Enable HW accelerated decoding of 8-bit HEVC for recent versions of Intel graphics driver on Windows
  • Support audio tracks in fragmented MP4 files
  • Support E-AC3 audio tracks in MP4 files
  • Fix ASF demuxer still broken by chance with MSVC++ only, the fix relevant for all platforms
  • Support more varieties of BMP images
  • Optimize output of the Mp4 muxer for streaming on Windows too
  • Add option to the Mp4 muxer to output fragmented MP4 files
  • Support WMAPRO audio codec for decoding
  • Support AAC with signal band replication (SBR) in external audio tracks
  • Numerous other fixes. See HERE for details.

How to Install Avidemux 2.7.4 in Ubuntu:

There are a few ways installing the latest the video editor in all curren Ubuntu releases.

  • Appimage, single executable (enable it in file properties dialog) to launch the editor.
  • Flatpak, community maintained package that runs in sandbox.
  • Native Ubuntu (.deb) packages via an unofficial PPA.

For Ubuntu 16.04, Ubuntu 18.04, and Ubuntu 19.04, here’s how to install Avidemux 2.7.4 via the unofficial PPA.

1. Open terminal either from app launcher or via Ctrl+Alt+T keyboard shortcut. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/avidemux

Type user password (no asterisk feedback due to security reason) when it prompts and hit Enter.

avidemux ppa

2. Then run following 2 commands to refresh package cache and install the video editor:

sudo apt update

sudo apt install avidemux2.7-qt5 avidemux2.7-qt5-data avidemux2.7-plugins-qt5 avidemux2.7-jobs-qt5

NOTE: if you get software launching error similar to:

avidemux2.7_qt5: symbol lookup error: avidemux2.7_qt5: undefined symbol: _Z20extractH264FrameTypePhjPjPiP11ADM_SPSInfoS0_

try updating your system via command sudo apt update && sudo apt upgrade.


To remove the native Ubuntu .deb package of Avidemux 2.7, run command in terminal:

sudo apt remove --autoremove avidemux2.7-*

And remove the PPA via Software & Updates utility under ‘Other Software’ tab.


Libreoffice, Ubuntu’s default office suite, released version 6.3 a few days ago. Here’s how to upgrade it in Ubuntu 18.04 and/or Ubuntu 19.04 via PPA.

LibreOffice 6.3 release highlights:

  • New ‘Tabbed Compact UI’
  • improved PDF export
  • improved Microsfot office file formats support.
  • Redact documents to remove/hide sensitive information
  • New ‘Tip-Of-The-Day’ dialog on startup

Although LibreOffice offers the latest snap package (runs in sandbox) in Ubuntu Software utility, you can choose upgrade the pre-installed LibreOffice package using the Fresh PPA.

1. Open terminal either via Ctrl+Alt+T keyboard shortcuts, or by searching for “terminal” from application launcher. When it opens, run command to add the LibreOffice PPA:

sudo add-apt-repository ppa:libreoffice/ppa

Type user password (no asterisk feedback while typing) when it prompts, and read terminal output for PPA description and hit Enter to continue.

2. Then you’ll see the upgrade available in Software Updater after checking for updates.

Or run commands in terminal to install LibreOffice:

sudo apt update

sudo apt install libreoffice

For Ubuntu 18.04 and higher, you can skip sudo apt update as it’s done while adding PPA.


You can restore to stock version of LibreOffice in Ubuntu main archive by running command in terminal:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:libreoffice/ppa

LiVES video editor and VJ tool released version 3.0.1 today. Here’s how to install it in Ubuntu 18.04, and Ubuntu 19.04.

LiVES 3.0 release highlights:

  • Render silence to end of video if necessary during rendering.
  • Improvements to openGL playback plugin, including much smoother playback.
  • Re-enable Advanced options for the openGL playback plugin.
  • Allow “Enough” in VJ / Pre-decode all frames
  • Refactor code for timebase calculations during playback (better a/v synch).
  • Overhaul external audio and audio recording to improve accuracy and use fewer CPU cycles.
  • Auto switch to internal audio when entering multitack mode.
  • Eliminate some race conditions between the audio and video threads.
  • Implemented reference counting for realtime effect instances.
  • Extensively rewrote the main interface, cleaning up the code and making many visual improvements
  • Improvements to online video downloader, clip size and format can now be selected, added an update option.
  • Improvements to the projectM filter wrapper, including SDL2 support.
  • Eliminate race conditions when applying rendered effects.
  • Added an option to invert the Z-order in multitrack compositor.
  • Added support for musl libc.

How to Install Lives 3.0.1 in Ubuntu:

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or from application menu. When it opens, run command to add the unofficial PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/lives

Type user password (no visual feedback while typing due to security reason) when it asks and hit Enter.

2. Then upgrade the software from an existing release via Software Updater:

or simply run commands in terminal to install or upgrade LiVES:

sudo apt-get update

sudo apt-get install lives lives-plugins


To remove the software, simply run commands:

sudo apt-get remove --autoremove lives lives-plugins

The PPA can be removed via Software & Updates utility under Other Software tab.

OpenComic is an open-source comic and manga reader that works on Windows, mac OS, and Linux. It’s written with Node.js and using Electron. And features:

  • Support image formats: JPG, PNG, APNG, GIF, WEBP, SVG, BMP, ICO
  • Support compressed formats: PDF, RAR, ZIP, 7Z, TAR, CBR, CBZ, CB7, CBT
  • Manga read mode
  • Double page view
  • Bookmarks and continue reading
  • Floating magnifying glass
  • Reading in scroll or slide

The software offers official snap package, which runs in sandbox and can be easily installed in Ubuntu 18.04 and higher via Ubuntu Software utility:

The Ubuntu native .deb package is also available to download at the link below:

OpenComic (amd64.deb)

Grab the 64-bit (amd64) package and click install via Gdebi package installer and done.


To remove the snap packge either use Ubuntu Software or run command in terminal:

sudo snap remove opencomic

To remove the .deb package, open terminal (Ctrl+Alt+T) and run command:

sudo apt remove --autoremove opencomic

By releasing version 0.17, the GTK+ frontend for mpv Gnome MPV is officially renamed to Celluloid.

Celluloid 0.17 release highlights:

  • Rename project to Celluloid
  • Add Turkish translation by @TeknoMobil
  • Add Esperanto translation by @F3nd0
  • Migrate from opengl-cb to the new render API
  • Handle numpad keybindings
  • Handle unicode keybindings
  • Forward media key events to mpv
  • Add dconf key for controlling cursor speed threshold for unhiding controls
  • Add option for suppressing playback errors

How to Install Celluloid in Ubuntu 18.04 and Higher:

At the moment you can install the media player easily via Flatpak package in Ubuntu 18.04, Ubuntu 19.04.

Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from application menu. When it opens, run following commands one by one.

1. Paste below command and run to install flatpak framework:

sudo apt-get install flatpak

2. Add flathub repository, which hosts a large list of flatpak applications:

flatpak remote-add --if-not-exists flathub

4. Finally install Celluloid via command:

flatpak install flathub io.github.celluloid_player.Celluloid

Once installed, launch the software either from application menu or by right-clicking video files and choose open with Celluloid!


To remove the Celluloid flatpak package, run command in terminal:

flatpak uninstall io.github.celluloid_player.Celluloid