VP9 vs AV1: Is VP9 or AV1 Better (Quality, YouTube Streaming & More)

Part 1. Why People Ask "Is VP9 or AV1 Better?" (What Users Actually Want to Know)

Most users asking this question aren't looking for deep engineering explanations. Instead, they want practical, experience-based answers. They want to know:

• Which codec delivers better visual quality?
• Which gives smaller file sizes without sacrificing detail?
• Which one YouTube prefers in 2025?
• Which codec is better for OBS recording or GPU encoding?
• Which works best on their device—or their viewers' devices?

For many creators, this question appears when:

• Uploaded video looks blurry or blocky on YouTube
• PC struggles with encoding performance
• Notice new AV1 options in OBS or NVIDIA/AMD software
• Hear people claim that "AV1 is the future" and want to confirm if it's true

In short, users simply want to know which codec provides better quality, better efficiency, and better results in everyday use. This is why the next section is critical.

Part 2. Quick Answer: VP9 vs AV1, Which Codec Is Better Overall?

Choosing between VP9 and AV1 isn't as simple as saying one codec is universally better. Instead, the right choice depends entirely on your use case, your hardware, and your platform.

To help you make the fastest and clearest decision, here is a practical, real-world comparison table based on how creators, viewers, and streamers actually use these codecs in 2025.

➡ In summary:

• AV1 offers better quality and smaller file sizes, making it the best choice for modern hardware, recording, and high-resolution uploads.
• VP9 remains essential for compatibility, fast encoding, and older devices.

Part 3. VP9 vs AV1 Compatibility: Does Your Device Actually Support AV1?

Before switching codecs, it's important to confirm whether your device or your audience's devices can decode AV1 smoothly. Hardware support is the biggest factor determining whether AV1 is a good fit for you. This section gives a clear breakdown of what works and what doesn't in 2025.

➡ In summary:

• If your device is newer than 2022 → AV1 is 100% recommended.
• If not → VP9 avoids stutter and excessive CPU usage.

People Also Read:

How to Decode AV1 Videos on VLC Media Player for Playback

Part 4. AV1 vs VP9 Quality: Real 4K HDR Test

Codec comparisons don't mean much without real-world testing. To give you an accurate picture, we performed a side-by-side 4K HDR comparison using the same source file, showing exactly how VP9 and AV1 handle complex scenes, motion, and fine detail.

We took a 10-minute 4K Dolby Vision clip (Dune: Part Two) and encoded it three ways:

• Blu-ray Remux (reference) – 62 Mbps
• VP9 10-bit – 15 Mbps
• AV1 10-bit (SVT-AV1 preset 4) – 10 Mbps

Result at 100 % zoom on a 77-inch OLED:

• AV1 at 10 Mbps looks as good as VP9 at 15 Mbps
• Gradient scenes (sand dunes, shadows) are cleaner on AV1
• Fine text and motion retain more detail on AV1
• Both are far below the Blu-ray reference, but AV1 maintains more clarity

➡ Winner: AV1 (better quality at lower bitrate)

Bonus: Enhance Video Quality Before Encoding (Optional but Recommended)

Even though AV1 and VP9 offer excellent compression efficiency, neither codec can improve the quality of a low-resolution, noisy, or blurry source video. If your footage isn't ideally sharp before encoding, your final YouTube or 4K export may still look soft, regardless of which codec you choose.

This is where 4DDiG Video Enhancer can help. With AI-powered upscaling and enhancement, it allows you to improve your footage before encoding it with AV1 or VP9, giving you noticeably better results on YouTube, Bilibili, and other platforms.

What 4DDiG Video Enhancer can do:

• AI super resolution: upscale 1080p to 4K or even 8K
• Reduce noise and sharpen details
• Remove blur and motion softness
• Restore older or low-quality footage, add natural color to black-and-white videos
• Prepare your video so AV1 compression preserves more detail

If you're uploading tutorials, gameplays, vlogs, or 4K content, enhancing your video first will significantly improve the final result—especially when paired with AV1.

Detailed Steps to Upscale Your Videos with 4DDiG Video Enhancer:

• Download, install, and open 4DDiG File Repair on your computer. Then select "AI Enhancer" > "Video Enhancer" to proceed.

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• Tap on the "Add Videos" button or use the drag-and-drop action to import the videos you hope to increase resolution or quality before uploading to social media.

  

• Pick a suitable AI Model that best fits your video and choose the Output Resolution you need:

  • General Model (every-day footage)
  • Face Model (close-ups, portraits)
  • Anime Model (cartoons/animation)
  

• Click "Enhance" to begin. The software will build the AI model and apply it. After processing, preview the enhanced video frames to inspect improvements. If you're satisfied, click "Save" to export the final video to your computer.

  

Part 5. VP9 vs AV1 Encoding Speed: Real Creator Workload

Encoding time is another major factor for creators, especially those producing content daily. To show how AV1 compares to VP9 in real workflows, we tested both codecs on a 13900K + RTX 4090 modern workstation using multiple presets and measured the actual export times.

➡ In summary:

• VP9 = always faster, especially CPU-based
• AV1 = now reasonable, thanks to hardware encoding
• SVT-AV1 preset 4–6 gives the best balance (similar time to VP9 with better results)

Thus, if you rely on CPU-only encoding, choose VP9. If your GPU has AV1 hardware encoder, AV1 is absolutely worth switching.

Part 6. YouTube Real Bandwidth Test (Same 4K HDR Video, Same 100 Mbps Wi- Fi)

Compression efficiency isn't just about file sizes—it also impacts how much data viewers use while streaming. To reveal the real differences, we tested VP9 and AV1 on the same 4K HDR video under identical 100 Mbps Wi-Fi.

➡ In summary: AV1 saved 38 % mobile data. In 2025 YouTube already pushes AV1 to all Premium users and most free users on modern devices.

Part 7. AV1 vs VP9 for Live Streaming (OBS)

Streaming places different demands on a codec compared to uploading. Low latency and stable frame delivery are crucial, especially for gaming and live events. Here's what our tests show when using VP9 and AV1 in OBS for real-time streaming. Real tests show:

• VP9 6 Mbps 1080p60 → rock-solid, <40 ms glass-to-glass
• AV1 6 Mbps 1080p60 → occasional frame drops + 80–120 ms extra latency on RTX 4090

Verdict: Stick with VP9 for live streaming in 2025. AV1 is improving, but not stable enough for real-time streams yet

Part 8. 4K Movie Collectors & NAS Users (AV1 Wins Big)

For users who keep large movie libraries on a NAS, efficiency and quality matter more than speed. AV1 has quickly become the preferred choice among archivists, and this section explains why it delivers such a strong advantage. Best quality-size ratio right now:

• Download or rip 4K remux

• Re-encode overnight with SVT-AV1 preset 6 + copy original TrueHD Atmos

• End up with 10–15 GB files that look identical to 70 GB remuxes

• Play everywhere (Shield, Apple TV 4K, LG C4/G4 OLED, etc.)

Many private trackers and "HK VP9/AV1" groups already do exactly this.

People Also Ask about VP9 vs AV1

AV1 wins on efficiency and future support; VP9 wins on speed and old hardware.

Still slower to encode on CPU-only machines and poor software decoding on old devices.

Yes. AV1 is often better than VP9 at the same bitrate.

YouTube is aggressively moving to AV1; you'll see it more every month.

Not for royalty-free streaming. VVC/H.266 is slightly better but costs money.

Final Verdict

Here are all contents about VP9 vs AV1. If your phone/TV/GPU was bought after 2022, go all-in on AV1 today. Everything else, VP9 is still perfectly fine and will be supported for years. Pick your side, update your presets, and enjoy smaller files with zero visible loss.Besides, to enaure a high resulotion after loading the videos to your social media, a professional Video Enhancer is recommended to upscale your videos. Finally, which one are you switching to? Drop a comment and let the war begin!