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What You Need to Know About HEVC Video in macOS High Sierra and iOS 11

With the arrival of iOS 11 and macOS High Sierra, Apple is supporting a new video format called HEVC, which replaces the previous standard most commonly used on Mac and iOS devices, namely H.264 / AVC. So why has Apple adopted the HEVC format, and what difference will it make to the end user? What is HEVC? High Efficiency Video Coding (HEVC), also known as H.265, is a next-generation video compression standard developed by a group of encoding experts called the Joint Collaborative Team on Video Coding. The HEVC video format has been in existence since around 2013, and HEIF is the still-image version of the standard that both iOS 11 and macOS High Sierra also support. (You can learn more about HEIF here.) Benefits of HEVC Apple's decision to adopt HEVC basically means two things - higher quality video and better compression rates. The HEVC standard enables a video to be compressed into a file that is about half the size (or half the bit rate) of H.264 / AVC. To put that another way, a HEVC video file offers significantly better visual quality than an AVC file of equivalent size or bit rate. While results vary depending on the type of content and the encoder settings, videos encoded in HEVC typically exhibit fewer compression artifacts and offer smoother playback than videos encoded using AVC. According to Apple, HEVC can compress 4K video files to up to 40 percent smaller file sizes than AVC without losing quality, which means users who upgrade their devices to iOS 11 and macOS High Sierra will be able to take the same high-quality videos without using up as

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