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HEIF can contain multitude of encoding. Wikipedia readers must immediately know that its not a format but a container for those "any encodings". It can be even JPEG inside. |
Who holds the patents and what the situation is. Public sources:https://www.eetimes.com/patents-standards-brew-licensing-woes/# and Reuters (...). |
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According to official specifications Apple HEIC registered brand is using Main or Main Still Picture profile of HEVC with an 8-bit per channel color depth and chroma subsampling of 4:2:0, while Sony and Canon HIEX registered brand may additionally increase the bit-depth to 10 bits per channel and chroma subsampling to 4:2:2 or 4:4:4.
'''Licensing and Patents'''
If BMFF HEIF is used with HEVC encoding is woth noting that HEV is heavily encumbered with patents and Library of Congress does not recommend of using such heavily patent troublesome formats. The parties holding patents on HEVC include but are not limited to:
* Apple
* Matsushita Electric Industrial Co
* Toshiba Corp.
* Lenovo
The uncertainty of patent encumbering is farther strengthened by unclear patents holders wordings. Holders of relevant patents, stated to the ISO that "the holders of these patent rights have assured the ISO and IEC that they are willing to negotiate licenses under reasonable and non-discriminatory terms." The specification also cautions that "some of the elements . . . may be the subject of patent rights other than those identified."
== History ==
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