Right click -> Copy image does exactly what you want, no?

I mean putting an image into a clipboard when the user presses Ctrl+C, or some button in my program (without crating a <img> element on the screen and asking the user to right-click it).

It's about programmatic access to clipboard, like selecting a part of image in a browser-based image editor (likely a canvas), and copy-pasting it into some other application.

https://underviewed.com/ and http://defaultfile.name/ pull random videos named by default. Pretty intriguing to look through.

Also good in this genre is Jon Bois' Accidental Upload Film Review [0]

[0] https://www.sbnation.com/2015/7/17/8990773/accidental-upload...

Interesting. This gives me a weird ChatRoulette like feeling. But then a ChatRoulette where maybe people didn't even know they were sharing... shivers

Sounds similar to what Klaxon does. https://github.com/themarshallproject/klaxon