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The new Versatile Video Coding (VVC)/H.266 standard offers superior compression but faces encoding complexity challenges. This study surveys recent advances in fast and low-complexity VVC/H.266 methods to address these issues.

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Area of Science:

  • Digital video compression
  • Multimedia technology
  • Information theory

Background:

  • Versatile Video Coding (VVC)/H.266, finalized in 2020, achieves 50% bitrate reduction over High-Efficiency Video Coding (HEVC)/H.265 at equivalent visual quality.
  • VVC/H.266 aims for enhanced compression and versatile application support via a unified profile.
  • Despite performance gains from advanced features like flexible partitioning, VVC/H.266's high encoding complexity hinders market adoption.

Purpose of the Study:

  • To provide a comprehensive overview of the VVC/H.266 standard.
  • To identify and analyze the primary challenges in VVC/H.266 coding, particularly encoding complexity.
  • To survey and present recent advancements in fast and low-complexity VVC/H.266 techniques.

Main Methods:

  • Comparative analysis of VVC/H.266 against previous video coding standards (e.g., HEVC/H.265).
  • Identification and examination of key technical challenges impacting VVC/H.266 performance.
  • Literature survey and categorization of recent research on reducing VVC/H.266 encoding and decoding complexity.

Main Results:

  • VVC/H.266 offers significant bitrate savings compared to HEVC/H.265.
  • Encoding complexity remains a critical barrier to VVC/H.266 implementation.
  • Numerous technical approaches are emerging to mitigate VVC/H.266's computational demands.

Conclusions:

  • VVC/H.266 represents a major advancement in video compression efficiency.
  • Addressing the encoding complexity is crucial for widespread VVC/H.266 deployment.
  • Ongoing research into fast and low-complexity methods is vital for realizing VVC/H.266's full potential.