AV1 encoding not available ? Poor video encoding

[CKnoxy]

I am experiencing really poor Microsoft teams screen sharing and I can not get hardware acceleration on team to activate, I think because AV1 is not available?

Is this a known issue or something I should be looking at in terms of my set up?

Summary: On the Arc 140T, the AV1 hardware encoder is available through QuickSync/oneVPL but is not registered in Media Foundation. H.264 and VP9 encoders are registered in Media Foundation.

Chromium-based apps (Edge, WebView2, and therefore Microsoft Teams) use Media Foundation / D3D12 Video Encode for hardware video encoding — never QuickSync — so they can't hardware-encode AV1 and fall back to software AV1. Teams uses AV1 for screen-share content, so screen sharing is software-encoded and collapses to ~640×360 at low fps.

 System:
 - GPU: Intel Arc 140T, device ID 0x7D51, Core Ultra 200H-class (hybrid w/ NVIDIA RTX 5070, muxless/Advanced Optimus)
 - Intel driver: 32.0.101.8860 (also current on .8861)
 - OS: Windows 11 build 26200.8655 (kernel 26100.8521)
 - Edge/WebView2: 150.0.4078.65

 Evidence:
 - edge://gpu → Video Acceleration → Encoding lists Encode h264 and Encode vp9 but no Encode av1.
 - ffmpeg (static build N-125628) on this GPU:
 - av1_qsv (QuickSync/oneVPL) → succeeds (hardware AV1 encode works)
 - av1_mf (Media Foundation) → fails ("Function not implemented", encoder won't open → no AV1 MFT)
 - h264_mf (Media Foundation) → succeeds (proves MF path works and H.264 MFT is registered)

Control / comparison: A second laptop with an older Intel iGPU (device ID 0x7D45, "Intel(R) Graphics"), driver 32.0.101.8724, identical Edge/WebView2 150.0.4078.65, does list Encode av1 profile main in edge://gpu and hardware-AV1-encodes the same Teams screen share. So AV1-in-Media-Foundation exposure exists for 0x7D45 but is missing for 0x7D51.

Impact: Microsoft Teams (and any Chromium/WebRTC app) screen-sharing on Arc 140T / Core Ultra 200H systems falls back to software AV1 → low resolution/frame-rate and high CPU. Likely affects the whole product line.

Request: Expose/register the AV1 encoder in Media Foundation (and D3D12 Video Encode) for the Arc 140T (0x7D51), matching the AV1-encode exposure already present on 0x7D45.

Repro: On an Arc 140T system, open edge://gpu → Encoding: H.264/VP9 present, AV1 absent. In Teams, share a document/browser window in a call with a participant → call-health Sent codec = av1 (software), resolution collapses to 360p.

[Shane_Intel]

Hello CKnoxy,

Thank you for reaching out to us via community.

Before we proceed, please note that this is an OEM device, we will try to assist you with general troubleshooting steps even if it’s something not traditionally covered in our support. However, if the issue still persists, you will have to contact the Original Equipment Manufacturer of your device. Your device manufacturer may have altered features, incorporated customizations, or made other changes to some components for better compatibility with your system.

To further assist you with your concern and to provide you with the best possible support, could you please provide the following information?

• May I know if you have tried to use the OEM driver?
• Have you tried to not enable hybrid mode on your laptop?

Also, To better understand your system's configuration, we kindly request that you download the Intel® System Support Utility for Windows* software. You can find the download link here: Intel® System Support Utility for Windows*

Here's a quick guide on using the Intel SSU:

1. Download and launch SSU.exe.
2. Check the box for "Everything."
3. Click "Scan."
4. When the scanning is complete, click "Next."
5. Click "Save."

I look forward to your response!

Best regards,

Shane E.

Intel Customer Support Technician

[Shane_Intel]

Hello CKnoxy,

I wanted to check if you had the chance to review the questions I posted. Please let me know at your earliest convenience so that we can determine the best course of action to resolve this matter.

Best regards,

Shane E.

Intel Customer Support Technician

[Shane_Intel]

Hello CKnoxy,

I have not heard back from you so I will close this inquiry now. If you need further assistance, please submit a new question as this thread will no longer be monitored.

Best regards,

Shane E.

Intel Customer Support Technician