--- title: dav1d 1.5.4 Brings AV1 Decoding To OS/2 | daily.dev description: dav1d 1.5.4, the open-source CPU-based AV1 decoder from VideoLAN, has been released with several notable updates. The release introduces OS/2 support via Meson... canonical: https://daily.dev/posts/dav1d-1-5-4-brings-av1-decoding-to-os-2-crsldl6u7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: dav1d 1.5.4 Brings AV1 Decoding To OS/2 | daily.dev og:description: dav1d 1.5.4, the open-source CPU-based AV1 decoder from VideoLAN, has been released with several notable updates. The release introduces OS/2 support via Meson... og:url: https://daily.dev/posts/dav1d-1-5-4-brings-av1-decoding-to-os-2-crsldl6u7 og:image: https://api.daily.dev/og/posts/CRSLdL6u7.png og:image:alt: dav1d 1.5.4 Brings AV1 Decoding To OS/2 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # dav1d 1.5.4 Brings AV1 Decoding To OS/2 **[Phoronix](https://daily.dev/sources/phoronix)** · 1 min read · 0 upvotes · 0 comments ## Summary dav1d 1.5.4, the open-source CPU-based AV1 decoder from VideoLAN, has been released with several notable updates. The release introduces OS/2 support via Meson build system and header file changes, adds Armv9.3-A Guarded Control Stack (GCS) support, and brings AArch64 and RISC-V optimizations. Additional improvements include better threading via scheduling tile tasks for all passes at once, precomputed quantization matrix tables, portability improvements for non-POSIX systems, and various hot-loop optimizations. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [VideoLAN Publishes Dav2d For Open-Source AV2 Decoder](https://daily.dev/posts/videolan-publishes-dav2d-for-open-source-av2-decoder-us7qpxz1j) · Phoronix · 0 upvotes · 0 comments - [Apple Video Decode Driver Posted For Upstream Linux Kernel Review](https://daily.dev/posts/apple-video-decode-driver-posted-for-upstream-linux-kernel-review-pfockg6ep) · Phoronix · 0 upvotes · 0 comments - [AV2 Codec Looks Like It Will Be Officially Released Next Week](https://daily.dev/posts/av2-codec-looks-like-it-will-be-officially-released-next-week-i5nkdddep) · Phoronix · 0 upvotes · 0 comments - [AV2 Specification](https://daily.dev/posts/av2-specification-0xu93rxid) · Lobsters · 0 upvotes · 0 comments --- Tags: [#open-source](https://daily.dev/tags/open-source) [View this post on daily.dev](https://daily.dev/posts/dav1d-1-5-4-brings-av1-decoding-to-os-2-crsldl6u7) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"dav1d 1.5.4 Brings AV1 Decoding To OS/2","url":"https://daily.dev/posts/dav1d-1-5-4-brings-av1-decoding-to-os-2-crsldl6u7","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/dav1d-1-5-4-brings-av1-decoding-to-os-2-crsldl6u7"},"datePublished":"2026-07-23T11:47:15.407Z","dateModified":"2026-07-23T11:47:34.756Z","description":"dav1d 1.5.4, the open-source CPU-based AV1 decoder from VideoLAN, has been released with several notable updates. 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