AV1 vs VP9: Compression, Quality, Performance

AV1 delivers 30-50% smaller files than VP9 at the same visual quality. VP9 encodes and decodes significantly faster, uses less CPU, and runs on more devices today. AV1 is the successor to VP9 (both royalty-free, both developed by the Alliance for Open Media), but VP9 still dominates where real-time performance matters. Pick AV1 for streaming and storage efficiency. Pick VP9 when encoding speed or device compatibility is the priority.

Compression Efficiency

AV1 achieves 30-50% bitrate savings over VP9 at equivalent quality. A 1080p video that needs 4 Mbps in VP9 might only need 2.5 Mbps in AV1. This gap is even larger at 4K resolutions where AV1's advanced prediction tools shine. The savings translate directly to lower bandwidth costs for streaming platforms, which is why YouTube, Netflix, and Twitch have all adopted AV1.

Encoding Speed

VP9 encodes roughly 5-10x faster than AV1 in software. AV1's complex algorithms require massive computation, making real-time encoding impractical without hardware acceleration. VP9 can handle live streaming and video calls comfortably on modern CPUs. Hardware AV1 encoders (Intel Arc, NVIDIA RTX 40-series, AMD RDNA 3) have closed this gap significantly, but software-only AV1 encoding remains painfully slow.

Quality at Low Bitrates

AV1 pulls ahead most dramatically below 2 Mbps. At very low bitrates, VP9 shows noticeable blocking artifacts and color banding. AV1 handles these scenarios better thanks to features like grain synthesis, reference frame scaling, and film grain preservation. For mobile streaming on slow connections, AV1 produces clearly better results.

Browser and Device Support

VP9 works in Chrome, Firefox, Edge, and Safari 14+. Nearly every Android device since 2014 supports VP9 playback. AV1 support is newer: Chrome 70+, Firefox 67+, Edge 79+, and Safari 17+. Hardware AV1 decoding requires recent chips (2020+). Older phones, smart TVs, and streaming sticks may struggle with AV1 playback. If your audience includes older devices, VP9 or H.265 are safer bets.

Royalty and Licensing

Both codecs are royalty-free. VP9 was developed by Google, and AV1 by the Alliance for Open Media (Google, Apple, Netflix, Meta, Amazon, and others). Neither requires licensing fees, unlike H.264 and H.265 which carry patent royalties. This makes both codecs attractive for open-source projects and companies wanting to avoid licensing complexity.

Which Should You Use?

Use AV1 for pre-encoded content like VOD streaming, archival, and any scenario where you encode once and serve many times. The encoding time pays for itself through bandwidth savings. Use VP9 for live streaming, video conferencing, or when targeting older hardware. For maximum compatibility, H.265 remains the most widely supported modern codec across consumer devices.

Working with video files? Our video compressor reduces file sizes in your browser, and you can convert clips to WebM format (VP9 container) or MP4 for universal playback. For more codec breakdowns, see VP8 vs VP9, ProRes vs H.264, and MPEG vs MP4.