Live data from Hacker News

When you opened a screen shot of a video in Paint, the video was playing in it

devblogs.microsoft.com

1–10 of 78 posts

Re: When you opened a screen shot of a video in Paint, the video was playing in it

#5
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.

Re: When you opened a screen shot of a video in Paint, the video was playing in it

#7
post #6

"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.

I did some Googling on your behalf as I remember having something like that but can't reproduce it right now:

https://old.reddit.com/r/OLED_Gaming/comments/1kovgdx/green_...

I'd make sure your drivers are up to date before fiddling with Chrome flags though.

Re: When you opened a screen shot of a video in Paint, the video was playing in it

#8
post #6

"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.

Video rendering can still be done with overlays, but it's a little more substantial, involving separate planes with the locations configurable on the graphics card. Look up MPO, Multi-Plane Overlay.

Your green stripe is likely because of the classic combination of unclamped bilinear filtering and a texture that's larger than the output region being used as the drawing surface for the video.

Re: When you opened a screen shot of a video in Paint, the video was playing in it

#10
i had forgotten about this technique when i was at the excellent https://tnmoc.org recently, looking at their sgi irix exhibit featuring a webcam.

the latency of the camera feed on the crt screen was unbelievable even (especially?) by modern standards!

after a minute of pure wonder i remembered about overlays. still mighty impressive.

Post reply on HN