July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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Video conferencing
Video streams are another thing altogether! They are a complex sequence of values that describe how an image (the "screen") changes over time. You have a streaming movie (or a webcam feed) at 1920x1080 pixel resolution. Each one of those pixels, or most of them (very rarely all of them), can change value (of color, brightness, etc) at each point in time. So, the samples at each point in time are not representing the value of each pixel in the screen, but the result of complex calculations that analyze which pixel changed and how. You cannot add them, no meaning in that.
Also, the result you want when you combine video streams together is almost never their blending superimposition one on each other (like a "transparency" ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.