dav2d: The Fastest AV2 Decoder Has Arrived — A New Chapter for Open Video Codecs

Published: May 4, 2026 · 5 min read

TL;DR: VideoLAN (the team behind VLC) just released dav2d — the fastest AV2 decoder on all platforms. AV2 is the next-generation video codec from the Alliance for Open Media, promising 30-40% better compression than AV1. This is a massive milestone for open video.

The open video codec landscape just got a major upgrade. On May 2, 2026, the VideoLAN project — the same team behind the ubiquitous VLC media player — published dav2d, a brand-new AV2 video decoder that they describe as "the fastest AV2 decoder on all platforms." The announcement shot to the top of Hacker News with over 560 points and 160+ comments in under 24 hours.

Here's what you need to know about dav2d, AV2, and why this matters for the future of video everywhere.

What Is AV2?

AV2 is the next-generation video coding specification from the Alliance for Open Media (AOMedia) — the same industry consortium that brought us AV1. Founding members include Google, Apple, Microsoft, Netflix, Amazon, Meta, and Intel.

Building on the foundation of AV1, AV2 is engineered to provide significantly superior compression efficiency. Early estimates suggest 30-40% bitrate reduction at the same perceptual quality compared to AV1. In plain English: streaming platforms can deliver higher quality video using less bandwidth, or deliver the same quality using far less data.

Key Improvements Over AV1

• Enhanced intra-prediction — better frame-level compression for complex scenes
• Improved transform coding — more efficient handling of high-frequency detail
• Smarter entropy coding — reduced overhead in the compressed bitstream
• Optimized for modern hardware — designed with SIMD and GPU acceleration in mind

AV2 is optimized for the evolving demands of streaming, broadcasting, and real-time video conferencing — exactly the workloads that dominate the internet today.

What Is dav2d?

dav2d is VideoLAN's AV2 decoder implementation. If the name sounds familiar, it's a direct successor to dav1d — the AV1 decoder that VideoLAN developed in collaboration with the OpenBSD Foundation, which became the gold standard for software AV1 decoding.

From the project description:

dav2d is the fastest AV2 decoder on all platforms. Targeted to be small, portable and very fast.

The decoder is hosted on VideoLAN's GitLab instance at code.videolan.org/videolan/dav2d and is available under a permissive open-source license.

Why "dav2d" Matters

The original dav1d decoder was a game-changer for AV1 adoption. Before dav1d, software AV1 decoding was slow and CPU-intensive. dav1d delivered 3-4x performance improvements over the reference decoder, making AV1 playback practical on everyday hardware. That performance boost was critical to AV1's eventual widespread adoption in browsers (Chrome, Firefox, Safari), streaming services (Netflix, YouTube, Disney+), and video conferencing platforms.

dav2d aims to do the same for AV2 — and if the HN buzz is any indication, it's well on its way. If you're working with video pipelines or streaming infrastructure, this is the decoder you'll want to integrate early.

The Patent Landscape Question

One of the most discussed topics in the HN thread is the ongoing patent battle around AV1. Sisvel, a patent assertion entity, has been pursuing licensing claims against companies using AV1. The Dolby/Disney vs Snapchat lawsuit over AV1 patent infringement is currently the highest-profile case, and the outcome could set precedents for AV2 as well.

AOMedia operates with a defensive patent strategy — member companies have committed to cross-licensing their essential patents, creating a mutual defense pact. The theory is that the combined patent portfolios of AOM members (Google, Apple, Microsoft, etc.) create a deterrent against patent trolls. Whether this holds up in court remains to be seen, but the industry consensus seems to be that AV2's adoption will follow a similar path to AV1 — gradual but inevitable.

What This Means for Developers

If You Build Video Products

• Start evaluating AV2 now. The codec will require hardware decode support in GPUs and SoCs, which takes 12-24 months. But early software decode via dav2d lets you start testing today.
• Update your encoding pipelines. If you use FFmpeg or GStreamer, watch for AV2 support in upcoming releases. The reference encoder is available from AOMedia.
• Plan for bandwidth savings. A 30-40% bitrate reduction at the same quality means real infrastructure cost savings for streaming platforms.

If You're a Casual User

• VLC will likely integrate dav2d soon. Since dav2d is a VideoLAN project, expect VLC to support AV2 playback in a future release.
• Browser support will follow. Chrome, Firefox, and Safari will add AV2 decode as hardware support becomes available.
• Better video at lower data usage. Eventually, this means YouTube and Netflix streams that look better on slower connections.

How It Compares to Existing Codecs

Bottom Line

dav2d is more than just another decoder release. It's a signal that the next generation of open video codecs is already here, and VideoLAN is doing what it does best — building fast, portable, high-quality software that pushes the industry forward.

Whether you're a streaming engineer evaluating next-gen codecs, a developer building video products, or just someone who cares about the future of internet video, dav2d and AV2 are worth your attention. The tools for the next decade of video are being built right now.

Want to learn more? Check out the Hacker News discussion, the AOMedia AV2 specification, and the dav2d project page.

Tags: dav2d, AV2, VideoLAN, AOMedia, video codec, streaming, open source, AV1