[andix]

If I'm not mistaken, raspberry pi has composite video support. At least some generations (2, 3 and 4?) seem to include it in the headphone jack.

Edit: even the 5 seems to include composite video, but it requires a little bit of soldering.

[naikrovek]

Yep you’re right. The author does not need any conversion, only the correct adapter to drive a TV from the era.