text-mode.org

In 1995 some countries started to broadcast a new British teletext protocol called level 2.5. Likely inspired by the French Antiope standard, it had more colours (4016 instead of 7) and redefinable characters. Few people ever saw it, because if your TV didn’t support it you would just see the classic level 1.

But now ZXGuesser has extracted level 2.5 teletext data from VHS-tapes and figured out how to display it. So the first image shows level 2.5 and the second shows level 1, both taken from this tweet.