|
HEIF
High Efficiency Image File Format (HEIF) is a digital container format for storing individual digital images and image sequences. The standard covers multimedia files that can also include other media streams, such as timed text, audio and video. HEIF can store images encoded with multiple coding formats, for example both SDR and HDR images. HEVC is an image and video encoding format and the default image codec used with HEIF. HEIF files containing HEVC-encoded images are also known as HEIC files. Such files require less storage space than the equivalent quality JPEG. HEIF files are a special case of the ISO Base Media File Format (ISOBMFF, ISO/IEC 14496-12), first defined in 2001 as a shared part of MP4 and JPEG 2000. Introduced in 2015, it was developed by the Moving Picture Experts Group (MPEG) and is defined as Part 12 within the MPEG-H media suite (ISO/IEC 23008-12). History The requirements and main use cases of HEIF were defined in 2013. The technical development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AVIF
AV1 Image File Format (AVIF) is an open, royalty-free image file format specification for storing images or image sequences compressed with AV1 in the HEIF container format. It competes with HEIC, which uses the same container format built upon ISOBMFF, but HEVC for compression. Version 1.0.0 of the AVIF specification was finalized in February 2019. Version 1.1.0 was finalized in April 2022. In a number of tests by Netflix in 2020, AVIF showed better compression efficiency than JPEG as well as better detail preservation, fewer blocking artifacts and less color bleeding around hard edges in composites of natural images, text, and graphics. AVIF support is available in all the major web browsers (i.e. over 93% of all web browsers). Features The AV1 Image File Format supports: * Multiple color spaces, including: ** HDR (with PQ or HLG transfer functions and BT.2020 color primaries, as part of BT.2100) *** Supports HDR gain map approach, backwards compatible with SDR di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |