High Efficiency Image File Format (HEIF) specifies the storage of individual images as well as image sequences in a single container file. It is an MPEG standard and defined by part 12 of MPEG-H (ISO/IEC 23008-12).
HEIF specification defines the means of storing High Efficiency Video Codec (HEVC) encoded intra images and HEVC encoded image sequences in which inter prediction is applied in a constrained manner. HEIF files are compatible with the ISO Base Media File Format (ISOBMFF, ISO/IEC 14496-12) and can also include other media streams, such as timed text and audio.