Computer hardware

Video tracking

Algorithm

Engineering

Rate distortion

Statistics

Multiview Video Coding

Bit rate

Real-time computing

Operating system

Coding (social sciences)

Computer science

Video processing

Codec

Software

Decoding methods

Context-adaptive binary arithmetic coding

Mathematics

Computer engineering

Operations management

Video quality

Coding tree unit

Data compression

Metric (unit)

Reference software

Encoder

Video-coding systems have presented significant improvements driven by the wide adoption of video streaming technologies combined with demands for better quality from users. The most recent video-coding standard from JCT-VC, named High Efficiency Video Coding, greatly improved the compression rate compared to its predecessor, H.264/AVC, but an even better performance must be pursued to accommodate future technologies. This article presents a comparison between the current state-of-art HEVC standard with the most recent project that is being conducted by the same group of experts, entitled Versatile Video Coding (VVC). According to experimental results obtained using similar configurations for both encoders, the VVC reference software provides significant bit-rate savings of 44.4% on average when compared to HEVC. However, this compression gains come with high computational costs: the VVC encoding time is on average 10.2 times higher when SIMD are used, and 15.9 times higher without such optimizations.

Rate-Distortion and Complexity Comparison of HEVC and VVC Video Encoders