HEIF
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* A still image ("image collection") container format, with brand <code>mif1</code>. | * A still image ("image collection") container format, with brand <code>mif1</code>. | ||
* An animated image ("image sequence") container format, with brand <code>msf1</code>. | * An animated image ("image sequence") container format, with brand <code>msf1</code>. | ||
| − | * An image compression scheme, with brand <code>heic</code>, based on [[HEVC]]. | + | * An image compression scheme, with brand <code>heic</code>, based on [[HEVC]]. This is used by some versions of Apple's iOS, when "High Efficiency" is selected as the storage option. (The alternative, "Most Compatible", uses [[JPEG]].) |
* Various other compression schemes, including [[H.264|AVC]] and [[JPEG]]. | * Various other compression schemes, including [[H.264|AVC]] and [[JPEG]]. | ||
* Compositing and layering of multiple images, including transparency. | * Compositing and layering of multiple images, including transparency. | ||
Revision as of 15:37, 3 July 2020
HEIF (High Efficiency Image File Format) is the lossy image and animation format defined by MPEG-H Part 12 (ISO/IEC 23008-12). It is based on ISO-BMFF, and supports arbitrary colorspaces, codecs, and compositing of images, with HEVC, AVC, and JPEG being defined in the initial spec.
Contents |
Format details
The standard defines:
- A still image ("image collection") container format, with brand
mif1. - An animated image ("image sequence") container format, with brand
msf1. - An image compression scheme, with brand
heic, based on HEVC. This is used by some versions of Apple's iOS, when "High Efficiency" is selected as the storage option. (The alternative, "Most Compatible", uses JPEG.) - Various other compression schemes, including AVC and JPEG.
- Compositing and layering of multiple images, including transparency.
The file extension .heic typically denotes single still images using HEVC in 8- or 10-bit. .heif may include any of the wider features.
Identifiers
Based on source code and sample files, it usually uses the brands mif1 and heic. Some files may use other brands, such as msf1 and heix.
See also
Software
Sample files
- Some of the links in this forum post might still work
- iPhone XR sample images
- https://telparia.com/fileFormatSamples/image/abydos/abydos.heic
Links
- Wikipedia: High Efficiency Image File Format
- HEIF information from the MPEG website
- What is the HEIF (or HEIC) Image Format?
- HEIF information from Nokia Technologies
- ISO/IEC 23008-12 (not free to download)
- How Apple is squeezing more photos into your iPhone
- Apple HEIC vs. students
See also MPEG-H#Links.
