Overview of Intra Prediction and Intra Mode Coding in AV2
Year: 2026
Type: conference-paper
Abstract: Intra prediction exploits spatial correlations within the same picture and is a core component of modern video compression systems. Compared to AV1, the AOMedia Video 2 (AV2) video coding format adopts a substantially enhanced intra prediction and intra mode coding framework to improve prediction accuracy and coding efficiency. This paper provides an overview of the intra prediction tools in AV2, including multiple reference line prediction, intra bi-prediction, data-driven intra prediction, implicit chroma-from-luma prediction, multi-hypothesis cross-component prediction, adaptive intra mode coding, and a 4-tap interpolation filter, along with key modifications to the existing AV1 intra prediction tools. The motivation, design rationale, and coding impact of these tools are discussed to highlight how AV2 advances intra prediction beyond previous generations.
Language: English
Subfield: Signal Processing
Field: Computer Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7202346571