File extension HEIC is a new file format designed to store highly compressed photos and videos. HEIC and HEIF formats were developed by MPEG group and are currently adopted by multiple vendors including Apple and Microsoft.
iOS Support for HEIC files
Apple added support for HEIC to iOS starting with iOS 11. It is especially useful given that new models of iPhones are capable of recording video in 4K format. HEIC uses High-Efficiency Video Codec (HEVC) which offers better bit rates with high-quality and can save storage for devices users.
You can turn on or off iOS feature which saves Photo and Video files to HEIC. Tap on Settings->Camera->Formats. There choose “Most compatible” for JPG images and “High efficiency” for HEIC images. HEIC support is quite limited on other operating systems so even though choosing HEIC can save you some storage it may not be worth complexities in conversion at this moment.
Mac OS Support for HEIC files
Mac OS supports HEIC and HEIF file formats starting with Mac OS High Sierra.
Windows Support for HEIC files
Windows supports HEIC and HEIF file formats starting with Microsoft Windows 10 (version 1803 preview, build 17123). It supports HEIC and HEIF files formats via Windows Photos app.
Android Support for HEIC and HEIF files
Android supports HEIC and HEIF file starting from Android P.
How to convert from HEIC format
To convert files from HEIC to other file formats you can use either iMazing app for Mac OS or iOS.
HEIC and High Efficiency Video Codec
High Efficiency Video Coding (HEVC), also known as H.265 is a new video compression standard. It was developed by MPEG (Moving Picture Experts Group) as a successor of H.264 video compression standard. Among features of H.265 are support for 8K video and substantially improved video quality at the similar bit rate. It also support twice better compression