Gaupol is a free open source text-based subtitle editor for Linux and Windows. You can use it to create and translate subtitles. A simple and easy-to-use tool. It also comes with a built-in video player for loading videos. You can time the subtitles according to the video. It also supports launching an external video player.
Install Gaupol on Ubuntu
Gaupol is available as a flatpak package. Therefore, you need to install flatpak and flathub on your Ubuntu system. If you have already skipped the installation. You can follow the links below for installation instructions. Then reboot the system.
Also read: How to install NewsFlash Feed Reader on Ubuntu
How to install Flatpak
Open the terminal app (ctrl + alt + t) and run it under the Gaupol flatpak installation command. The latest version of Gaupol will be installed on your Ubuntu system.
flatpak install flathub io.otsaloma.gaupol
Then run the following command to start Gaupol.
flatpak run io.otsaloma.gaupol