H.264/MPEG-4 AVC

wikipedia, “H.264/MPEG-4 AVC”, public translation into Russian from English More about this translation.

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High 4:2:2 Profile (Hi422P)

Primarily targeting professional applications that use interlaced video, this profile builds on top of the High 10 Profile, adding support for the 4:2:2 chroma subsampling format while using up to 10 bits per sample of decoded picture precision.

High 4:4:4 Predictive Profile (Hi444PP)

This profile builds on top of the High 4:2:2 Profile, supporting up to 4:4:4 chroma sampling, up to 14 bits per sample, and additionally supporting efficient lossless region coding and the coding of each picture as three separate color planes.

For camcorders, editing, and professional applications, the standard contains four additional all-Intra profiles, which are defined as simple subsets of other corresponding profiles. These are mostly for professional (e.g., camera and editing system) applications:

High 10 Intra Profile

The High 10 Profile constrained to all-Intra use.

High 4:2:2 Intra Profile

The High 4:2:2 Profile constrained to all-Intra use.

High 4:4:4 Intra Profile

The High 4:4:4 Profile constrained to all-Intra use.

CAVLC 4:4:4 Intra Profile

The High 4:4:4 Profile constrained to all-Intra use and to CAVLC entropy coding (i.e., not supporting CABAC).

As a result of the Scalable Video Coding (SVC) extension, the standard contains three additional scalable profiles, which are defined as a combination of a H.264/AVC profile for the base layer (identified by the second word in the scalable profile name) and tools that achieve the scalable extension:

Scalable Baseline Profile

Primarily targeting video conferencing, mobile, and surveillance applications, this profile builds on top of a constrained version of the H.264/AVC Baseline profile to which the base layer (a subset of the bitstream) must conform. For the scalability tools, a subset of the available tools is enabled.

Scalable High Profile

Primarily targeting broadcast and streaming applications, this profile builds on top of the H.264/AVC High Profile to which the base layer must conform.

Scalable High Intra Profile

Primarily targeting production applications, this profile is the Scalable High Profile constrained to all-Intra use.

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License: Материал из Wikipedia