BAH!
I was wondering why my recently-mentioned scripty for parsing movie listings off Aertel had stopped working; turns out it's because instead of doing a teletext-to-plaintext conversion, they're now doing a teletext-to-IMAGE conversion, so I'm going to have to download an image and convert it to text if I want to continue parsing. It's not as difficult as it sounds because the charset is fixed-pitch and single-font, but it's still a pain in the nads.