Context-adaptive variable-length coding Totally Explained

Everything about Context-adaptive Variable-length Coding totally explained

Context-adaptive variable-length coding (CAVLC) is a form of entropy coding used in H.264/MPEG-4 AVC video encoding. It is used to encode residual, zig-zag order 4x4 (and 2x2) blocks of transform coefficients. As such it's an inherently lossless compression technique. It is primary used as an alternative to Context-based adaptive binary arithmetic coding (CABAC), a more space-efficient entropy encoding scheme, as it requires considerably less processing to decode. CAVLC is supported in all H.264 profiles, unlike CABAC which isn't supported in Baseline and Extended profiles.

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