kVTCompressionPropertyKey_H264EntropyMode

The entropy encoding mode for H.264 compression.

Declaration

let kVTCompressionPropertyKey_H264EntropyMode: CFString

Discussion

If supported by an H.264 encoder, this property controls whether the encoder should use Context-based Adaptive Variable Length Coding (CAVLC) or Context-based Adaptive Binary Arithmetic Coding (CABAC). CABAC generally gives better compression at the expense of higher computational overhead. The default value is encoder-specific and may change depending on other encoder settings.

Topics

Entropy Modes

kVTH264EntropyMode_CAVLC
kVTH264EntropyMode_CABAC