July 2017
Intermediate to advanced
300 pages
5h 43m
English
book
Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
by Dmitry Sheiko
Content preview from Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
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Recording a screencast
In fact, while building the service for taking screenshots, we have done most of the work for screencast recording. We already have the MediaStream object delivered by webkitGetUserMedia. We just need a way to define the start and end of recording and save the collected frames in a video file. That is where we can benefit from the MediaStream Recording API, which captures the data produced by MedaStream or HTMLMediaElement (for example, <video>) so that we can save it. So, we modify the service again:
./js/Service/Capturer.js
//... const toBuffer = require( "blob-to-buffer" ); //... start( desktopStreamId ){ navigator.webkitGetUserMedia(/* constaints */, ( stream ) => { let chunks = []; this.dom.video.srcObject ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.
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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.