March 2014
Intermediate to advanced
672 pages
40h 11m
English
Content preview from The Core iOS Developer’s Cookbook, Fifth EditionBecome 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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AV Foundation and Core Media
This recipe requires access to two very specialized modules. The AV Foundation module provides an Objective-C interface that supports media processing. Core Media uses a low-level C interface to describe media properties. Together these provide an iOS version of the Mac’s QuickTime media experience. Import both modules in your source file for this recipe.
Recipe 8-5 begins by recovering the media URL from the image picker’s info dictionary. This URL points to the temporary file in the sandbox created by the image picker. The recipe creates a new AV asset URL from that. Next, it creates the export range, the times within the video that should be saved to the library. It does this by using the Core Media CMTimeRange ...
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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.