Install alevt by entering the following commands in the terminal:
sudo apt update sudo apt install alevt
X11 Teletext/Videotext browser
AleVT is an X11 program for browsing and searching Teletext/Videotext pages received by a compatible decoder (at the moment, bttv). . Features include: . * Multiple windows * Page cache * Regular expression searching * Built-in manual . Additional command line utilities can . * receive the time from Teletext/Videotext * capture pages and write them to disk . Teletext/Videotext is used by TV channels to transmit textual information pages (it's transmitted via non-visible scan lines).