How to find out the resolution of the user's webcam?

Question

Regular Expressions

I'm doing something like a video chat. You need to know the permission of the user's webcam. In chrome, I solved the issue by getting the size of the video tag with the stream from the camera, but this does not work in muzzle. What to do with mozilla?

Answer 1

If the string can start and end with a hyphen:
If it can't:
/^(?:[а-яё]+-?)*[а-яё]+$/i

Answer 2

Something like this https://jsfiddle.net/joomla/gjt7s2t0/1/

Answer 3

I think we should try to draw the video in the canvas , and then sort through the raw data to determine the "empty" areas?