Guide
VP9 Codec in 2026: Where AV1 Wins and VP9 Survives
AV1 is the better choice for new video deployments, while VP9 remains useful for browsers, smart TVs and older playback hardware.
Which codec wins for new video deployments?
AV1 wins. For a fresh streaming service, archive, or encoding workflow in 2026, choose AV1 as the preferred format and retain VP9 only where measured device support requires it.
The reason is compression. AV1 can deliver better compression than VP9 at comparable visual quality, reducing bitrate and storage costs across a large catalog without tying providers to a royalty-bearing codec. It was developed for internet video by the Alliance for Open Media, whose AV1 specification defines an open bitstream format for interoperable implementations.
| Decision point | AV1 | VP9 |
|---|---|---|
| New encoding workflows | First choice | Compatibility output |
| Compression efficiency | Better | Good |
| Encoding performance | Slower and more demanding | Faster with mature encoders |
| Hardware decoding | Common on newer devices | Embedded across older devices |
| Web delivery | Increasingly practical | Established fallback |
| Typical container | WebM or MP4 | WebM |
Encoding cost complicates things. High-quality AV1 presets can consume considerably more CPU time than libvpx-vp9, so a provider producing live renditions on limited hardware may get more predictable throughput from VP9. Dedicated encoders change that calculation, although supported profiles, visual quality, and rate-control performance vary among chips.
Bitrate alone proves nothing. Resolution, frame rate, bit depth, encoder preset, and quality target must match, or a smaller AV1 file may simply reflect a harsher quality setting rather than superior encoding.
Where does VP9 still matter?
Keep VP9 for reach. It remains useful when a service must deliver efficient video directly to browsers, smart TVs, and media players whose hardware decoding predates broad AV1 support.
Its installed base matters. VP9 was developed through the WebM Project, and its mature decoder footprint is why it has not vanished merely because a successor can produce smaller files at similar quality. The project's VP9 documentation covers the bitstream, encoding guidance, and hardware integration behind its adoption across video streaming platforms.
Here, the loser wins. Choose VP9 over AV1 when audience data shows a meaningful block of devices with VP9 hardware decoding but only software AV1 playback, particularly if those devices include inexpensive televisions, old laptops, or mobile processors that struggle with high-resolution software decoding. That path can raise CPU usage, drain batteries, and drop frames.
Browser support remains broad. The live WebM compatibility table is more useful than a frozen product list because browser versions and mobile restrictions keep changing, while the corresponding AV1 support table reveals older clients that still require another representation.
Do not make VP9 exclusive. A practical adaptive streaming ladder can place AV1 alongside VP9 or H.264, allowing the player to select a supported rendition rather than forcing every device through one decode path. For the older fallback decision, see H.264 versus H.265.
Do you need a VP9 codec download?
Usually, no. Current browsers, VLC, mpv, and many operating-system media frameworks already include VP9 playback, so installing an unknown codec pack is more likely to create filter conflicts than fix the actual fault.
Find the failed layer. If a WebM file has sound but no picture, inspect its video stream in VLC under Tools > Codec Information or run ffprobe input.webm; a player that identifies VP9 but cannot render it may have a disabled decoder, a faulty hardware-acceleration path, or an unsupported profile.
Try software decoding next. In Firefox, Settings > General > Performance exposes the hardware acceleration switch after “Use recommended performance settings” is cleared. If playback starts with acceleration disabled, the GPU driver or its VP9 decode path is the suspect. No codec pack helps there.
Playback stacks also differ. Windows applications built on Media Foundation can behave differently from VLC because they do not necessarily call the same demuxers, decoders, or hardware interfaces, even when both applications open the identical file. Install extensions only from the operating system's official store, and avoid download pages offering EXE or MSI codec bundles whose filters can override working components.
Test before publishing. Encode a short, representative clip in AV1 and VP9, then play both on the oldest supported television, phone, and desktop GPU. Keep VP9 only when those results expose a compatibility gap large enough to justify another encoding pass and another set of files in storage.
FAQ
- Is VP9 obsolete in 2026?
- No. VP9 is no longer the best default for a new video catalog, but its broad browser support and large installed base of hardware decoders still make it a useful compatibility representation.
- Is VP9 better than H.264?
- Usually, it compresses better. H.264 still reaches more old devices, editing applications, and embedded players, so use VP9 for efficient web playback only when support is known.
- Can MP4 contain VP9 video?
- Yes, it can. WebM remains the conventional container for VP9 and generally causes fewer interoperability surprises, so test MP4-based VP9 on every target player before committing an entire catalog.
- Should a website serve both AV1 and VP9?
- Often, yes. Serve AV1 to capable clients, retain VP9 where mature hardware decoding matters, and consider H.264 for the oldest compatibility tier if audience data supports the additional encoding and storage cost.