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Working with HEIF and HEVC
High Efficiency Image File Format (HEIF) and High Efficiency Video Coding (HEVC) are powerful new standards-based technologies for storing and delivering images and video. Gain insights about how to take advantage of these next generation formats and dive deeper into the APIs that allow you to fully harness them in your apps.
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WWDC 2016
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Good morning, everyone, and welcome to Friday of WWDC.
Thank you.
My name is Erik Turnquist and today Brad and I are going to talk about working with HEIF and HEVC.
So, first off, what is HEVC? HEVC stands for High Efficiency Video Coding and it is the industry standard next generation video encoding technology. It's the successor to H.264. Now for the more important question, is why? Why is Apple going through all of the effort to deliver a new codec? H.264 has been really good to us for over ten years.
Now we thought about this a lot, and we really want to enable new features and unfortunately, H.264 has reached the limits of its capabilities. We want to enable new features like 4K and larger frame sizes, high bit depths like 10-bit and wider color spaces like Rec. 2020. Now, we want to do all of this while lowering the bit rate, not raising that. So, how do we do that? Well, we do that with HEVC. So, now how much lower are the bit rates we're actually seeing? Well, for generally encoded content we're seeing up to a 40 percent bit rate reduction for H.264. So, this is a really big deal.
And for camera capture, we're seeing up to a 2 times better compression compared to H.264