H.264
H.264, also known as MPEG-4 AVC (Advanced Video Coding), is a video compression standard that offers significantly greater compression than its predecessors. H.264 is a lossy compression codec that uses interframe compression and contains different levels of quality.
The enhanced compression and perceptual quality of H.264 are obtained by motion estimation, which minimizes temporal redundancies also known by intra estimation (which minimizes spatial redundancies), transformation of motion estimation and intra estimation into the frequency domain (reduction of compression artifacts) and entropy coding, which assigns a smaller number of bits to frequently encountered symbols and a larger number of bits to infrequently encountered symbols.
XAVC
XAVC is a recording format that was introduced by Sony. XAVC uses level 5.2 of H.264/MPEG-4 AVC, which is the highest level supported by that video standard and can support 4K resolution (4096 × 2160 and 3840 × 2160) at up to 60 frames per second (fps). XAVC supports color depths of 8, 10, and 12 bits and the Chroma subsampling can be 4:2:0, 4:2:2, or 4:4:4. The Material Exchange Format (MXF) can be used for the digital container format.
XAVC allows for a wide range of content production including intra frame recording and long group of pictures (GOP) recording.
Thanks, Sylvester. Given that XAVC uses the H.264 codec, it is safe to say that H.264 is, by and large, mostly interframe, but obviously allows intraframe at Level 5.2.
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