NVENC AV1 Encoding Explained: RTX 40/50 Guide (2026)

NVENC AV1 is the hardware AV1 encoder built into NVIDIA RTX 40 and 50 series GPUs, and it delivers roughly 30-40% better quality than NVENC H.264 at the same bitrate. That means a 6,000 Kbps AV1 stream looks as sharp as a ~8,500 Kbps H.264 stream — a massive win if your upload speed is the bottleneck. The catch: AV1 live stream support is still limited to a handful of platforms, with YouTube being the primary destination.

What Is NVENC AV1?

NVENC stands for NVIDIA Encoder — a dedicated hardware block on NVIDIA GPUs that handles video encoding independently from the CUDA cores running your game. The Ada Lovelace architecture (RTX 40 series, launched late 2022) introduced a new-generation NVENC chip with dual AV1 encoder engines. The Blackwell architecture (RTX 50 series, 2025) carries these forward with further efficiency gains.

Before RTX 40, AV1 encoding was purely a CPU software task — brutally slow (think 2-5 fps at 1080p on even a high-end Ryzen 9). The Ada NVENC chip changed everything by enabling real-time AV1 encoding at 1080p, 1440p, and 4K 60fps with negligible GPU overhead, the same way NVENC has handled H.264 and HEVC for years.

Which GPUs Support NVENC AV1?

Not every NVENC chip supports AV1 encoding. The cutoff is Ada Lovelace:

Quality Gains: AV1 vs H.264 vs HEVC

This is where NVENC AV1 earns its reputation. Here are real-world quality comparisons at common streaming bitrates for 1080p 60fps content:

Use the Streaming Bitrate Calculator to model exactly how bitrate changes affect your storage and bandwidth needs.

Platform Support for AV1 Live Streaming

This is the critical question, and the answer shapes whether you can actually use NVENC AV1 for streaming today:

Check the YouTube settings guide for the full recommended encoder configuration, or the Twitch settings guide if Twitch is your main platform.

Recommended NVENC AV1 Settings in OBS

To enable AV1 in OBS Studio (29.1 or newer), go to Settings > Output > Encoder and select NVENC AV1.

OBS NVENC AV1 Settings for YouTube

• Encoder: NVENC AV1

• Rate Control: CBR

• Bitrate: 8,000–12,000 Kbps for 1080p 60fps; 15,000–20,000 Kbps for 1440p 60fps

• Keyframe Interval: 2 seconds (set this explicitly — some builds default to 0)

• Preset: P5 (Slow) — P6 or P7 only if you have a very recent RTX 50 and notice no GPU impact

• Tuning: High Quality

• Multipass: Full (Single Pass if you experience dropped frames)

• Profile: Main

• Look-ahead: Off (unstable at high resolutions with AV1)

• B-frames: 0 (AV1 in hardware mode handles this internally)

The most common mistake is leaving the keyframe interval at 0 or Auto. YouTube's ingest requires a consistent 2-second keyframe interval for reliable stream health. Setting this manually prevents the random stream disconnects that appear to be encoder failures but are actually keyframe timing issues.

For comparison guidance on which codec to pick for your setup, the codec comparison tool breaks down H.264, HEVC, and AV1 side by side.

Bitrate Recommendations by Resolution

NVENC AV1 for Recording (Not Just Streaming)

NVENC AV1 excels as a recording codec, not just for live streams. A 1080p 60fps game recording at 50,000 Kbps AV1 produces files roughly 35-40% smaller than the same settings in H.264 with no visible quality loss. Over a full session, that difference is meaningful:

• H.264 at 50,000 Kbps, 2 hours: ~45 GB

• AV1 at 50,000 Kbps, 2 hours: ~45 GB (but visually equivalent to H.264 at ~70,000 Kbps)

• AV1 at 35,000 Kbps, 2 hours: ~31.5 GB with H.264-50K visual quality

Use the Recording Time Calculator to model how NVENC AV1 bitrate changes affect how long you can record before running out of storage.

One important note: if you edit AV1 footage in Premiere Pro or DaVinci Resolve, ensure your version supports AV1 decode acceleration. DaVinci Resolve 18.5+ and Premiere Pro 2024+ both handle AV1 with GPU-accelerated decode on modern hardware.

AV1 vs HEVC: Which Hardware Encoder to Use for Recording?

For pure recording on RTX 40/50, NVENC AV1 generally wins over NVENC HEVC:

• AV1: Better compression, smaller files, growing platform support

• HEVC: Slightly faster encode pipeline, broader editing software support

• H.264: Use only if you need maximum compatibility with older tools or delivery to H.264-only platforms

For more detail on how these codecs stack up, the H.264 vs H.265 vs AV1 guide covers the full comparison including software encoding benchmarks.

Viewer Decoding: Does Your Audience Support AV1?

When you stream AV1 to YouTube, YouTube re-encodes your stream into multiple quality levels for viewers — H.264, VP9, and AV1 — depending on the viewer's device. Viewers watching in Chrome or Edge on a modern PC will automatically receive the AV1 stream when available. Viewers on older devices or unsupported browsers fall back to H.264 transparently. This means there is no compatibility risk for your audience when you stream AV1 to YouTube.

Frequently Asked Questions

Does OBS support NVENC AV1?

Yes. OBS Studio 29.1 (released mid-2023) added NVENC AV1 encoder support. You need OBS 29.1 or newer and an RTX 40 or 50 series GPU. In OBS, go to Settings > Output > set output mode to Advanced, then select 'NVENC AV1' from the encoder dropdown. If the option does not appear, update OBS and verify your GPU drivers are current (driver 531.61 or newer is recommended for AV1 stability).

Can I stream AV1 to Twitch with an RTX 4080?

No. As of mid-2026, Twitch does not accept AV1 ingest. Your stream will be rejected or fall back if you send an AV1 signal to Twitch's RTMP servers. For Twitch, use NVENC H.264 at 6,000 Kbps. The best OBS bitrate settings guide covers the optimal Twitch configuration in detail.

Is NVENC AV1 quality good enough to replace x264 for streaming?

Yes, for YouTube. NVENC AV1 on RTX 40/50 produces better quality than x264 Medium at the same bitrate, and with far less CPU overhead. For Twitch and other H.264-only platforms, NVENC H.264 (New) on an RTX GPU already matches x264 Medium closely — see the NVENC vs x264 comparison for a full breakdown.

What bitrate should I use for 1080p 60fps AV1 on YouTube?

8,000 Kbps is the practical sweet spot for most 1080p 60fps AV1 streams to YouTube. At 8,000 Kbps, NVENC AV1 produces noticeably better results than 6,000 Kbps H.264 in motion-heavy games. If your upload allows it, pushing to 10,000–12,000 Kbps gives diminishing but still visible gains in very fast scenes. Check your upload headroom first with the Upload Time Calculator to confirm your connection can sustain that rate reliably.