This was a nice trick to protect text from copying. For instance, student assignments. Students could still use digital camera on CRT display, but 20 years ago cameras were costly and students did not have them. And typing text from scratch was a tedious job. So online served assignments were not shared too fast.
This unlocked some memories. I remember on my system the chroma colour not being green but some very dark shade of grey that was almost black but not really black… something like #010101
This was a nice trick to protect text from copying. For instance, student assignments. Students could still use digital camera on CRT display, but 20 years ago cameras were costly and students did not have them. And typing text from scratch was a tedious job. So online served assignments were not shared too fast.
I made extensive use of this, when I found it by accident, in my Winamp skins and GUI programs!
"Nowadays, video rendering is no longer done with overlays."
Darn, I thought this explained why, after upgrading my GPU, videos playing in Chrome have a thin green stripe on their right edge.
This unlocked some memories. I remember on my system the chroma colour not being green but some very dark shade of grey that was almost black but not really black… something like #010101
I've used that trick as far as Windows XP, playing videos inside 3D models in programs like SketchUp