The Alliance for Open Media has officially published the AV2 v1.0 specification, marking a significant milestone in the development of the next generation of royalty-free video compression. The release, reported by Phoronix on 30 May 2026, had been widely anticipated following recent activity in the AOM Video Model reference codebase.
AV2 is the direct successor to AV1, which launched in 2018 and went on to achieve broad adoption across major web browsers, mobile platforms, and streaming services. The new codec is backed by the same heavyweight coalition — Google, Apple, Microsoft, Meta, Netflix, Amazon, and Intel among them — that steered AV1 from specification to mainstream deployment.
What AV2 brings to the table
The v1.0 specification introduces improvements to block partitioning, prediction mechanisms, and transform coding. Together, these refinements are expected to deliver meaningful bit rate reductions at equivalent visual quality, which carries particular relevance for 4K, 8K, HDR content, and bandwidth-constrained delivery scenarios.
A deliberate design choice in AV2 is backward compatibility with AV1 decoders. This approach is intended to ease the ecosystem transition, allowing devices and software without dedicated AV2 decoding hardware to still handle content gracefully — a notable departure from previous codec transitions that created hard ecosystem splits. The exact technical mechanism behind this compatibility has not been fully detailed in public documentation yet and will likely be a focus of developer interest in the months ahead.
The royalty-free advantage
As with AV1, AV2 is released under a royalty-free licensing model. This remains one of its most strategically important differentiators against proprietary alternatives such as HEVC (H.265) and the more recent H.266/VVC, both of which involve patent-pool licensing arrangements that have historically created friction — particularly for browser vendors, open-source projects, and cost-sensitive markets.
The royalty-free approach was a decisive factor in AV1's own adoption trajectory, and there is every reason to expect it will play a similarly central role for AV2.
Realistic adoption timelines
The path from specification publication to broad ecosystem support is well-established. AV1's specification was finalised in 2018, but widespread hardware decoder support in consumer devices did not materialise until roughly 2022–2023. AV2 is expected to follow a comparable arc, with software encoders and decoders arriving first — likely within the coming year from open-source projects such as libaom, SVT-AV1, and dav1d — while hardware decoder support will depend on silicon roadmaps and could take an estimated two to four years.
Browser vendors and content delivery networks will need to evaluate the performance tradeoffs of AV2 encoding and decoding before shipping support. Those assessments typically depend on the maturity of optimised software implementations and real-world benchmark data, which have yet to emerge from reference implementations.
What comes next
With the specification now finalised, attention shifts to several key areas. The developer community will be looking for concrete benchmark comparisons between AV2 and its predecessor, as well as early competitive analysis against H.266/VVC. Technical audiences will also want clarity on the backward compatibility mechanism and how it functions at the bitstream level.
The broad industry coalition backing AV2 provides a strong signal about its long-term viability, but the road from specification to ubiquitous support is measured in years rather than months. For now, the publication of v1.0 represents the formal starting gun — and the real work of implementation, optimisation, and integration begins.
開放媒體聯盟已正式發布 AV2 v1.0 規格，標誌著下一代免版稅影片壓縮技術發展的重要里程碑。根據 Phoronix 於 2026 年 5 月 30 日的報導，此發布在 AOM 影片模型參考程式碼庫近期出現活動後，已備受業界期待。
AV2 是 AV1 的直接後繼者。AV1 於 2018 年推出，並隨後在主流網頁瀏覽器、流動平台及串流服務中獲得廣泛應用。這個新編解碼器背後，是推動 AV1 從規格走向主流部署的同一支重量級聯盟支持——其中包括 Google、Apple、Microsoft、Meta、Netflix、Amazon 及 Intel 等。
AV2 帶來的改進
v1.0 規格在區塊分割、預測機制及轉換編碼方面引入了改進。這些技術上的精進，預期能在同等視覺質素下實現顯著的位元率降低，這對於 4K、8K、HDR 內容，以及頻寬受限的傳輸場景尤其重要。
AV2 的一個刻意設計選擇是向後相容 AV1 解碼器。此方法旨在簡化生態系統過渡，讓缺乏專用 AV2 解碼硬件的設備與軟件仍能順暢處理內容——這是對先前造成生態系統硬性分割的編解碼器過渡方式的一次顯著偏離。這種相容性背後的確切技術機制，目前尚未在公開文獻中完全說明，並很可能在未來數月成為開發者關注的焦點。
免版稅的優勢
與 AV1 一樣，AV2 採用免版稅的授權模式發佈。這對抗 HEVC (H.265) 及較新的 H.266/VVC 等專有替代方案而言，仍然是其最具策略重要性的區別因素之一——後兩者均涉及專利池授權安排，歷史上一直帶來摩擦，尤其對瀏覽器供應商、開源項目及對成本敏感的市場而言。
免版稅的做法是 AV1 自身採用軌跡中的決定性因素，我們有充分理由預期它將在 AV2 中扮演同樣核心的角色。
現實的採用時間表
從規格公佈到獲得廣泛生態系統支持的路徑已有前例可循。AV1 的規格於 2018 年定案，但消費設備中廣泛的硬件解碼器支持直到大約 2022–2023 年才實現。預計 AV2 也將遵循類似的發展弧線，軟件編碼器和解碼器將率先出現——很可能在未來一年內由 libaom、SVT-AV1 及 dav1d 等開源項目提供——而硬件解碼器的支持則取決於晶片路線圖，估計可能需要兩至四年時間。
瀏覽器供應商和內容分發網絡在提供支持前，需要評估 AV2 編碼和解碼的性能取捨。這些評估通常取決於優化軟件實現的成熟度和實際基準測試數據，而這些目前尚未從參考實現中產生。
下一步發展
隨著現時規格已定案，焦點轉向幾個關鍵領域。開發者社區將尋找 AV2 與其前身之間具體的基準比較，以及對 H.266/VVC 的早期競爭分析。技術受眾亦希望了解向後相容機制的細節，以及它在位元串流層面如何運作。
支持 AV2 的廣泛行業聯盟，為其長期可行性提供了強而有力的訊號，但從規格到普遍支持的道路是以年而非月來計量的。就現時而言，v1.0 的發布代表了正式的起跑信號——而實施、優化與整合的真正工作才剛剛開始。