High Efficiency Video Coding
Advanced Video Coding (AVC) uses the integer DCT (IntDCT), an integer approximation of the DCT. It uses 4x4 and 8x8 integer DCT blocks. High Efficiency Video Coding (HEVC) and the High Efficiency Image Format (HEIF) use varied integer DCT block sizes between 4x4 and 32x32 pixels. , AVC is by far the most commonly used format for the recording, compression and distribution of video content, used by 91% of video developers, followed by HEVC which is used by 43% of developers.