Vulkan AV1 decode on FFMPEG silently fail

[Nekl]

Windows 11 version: 26200.8457
Intel Arc 140V graphic driver version: 32.0.101.8629
ffmpeg version: N-124554-g77c3a7349e-20260520

HW decoding using d3d11va, d3d12va, and qsv on AV1 video worked fine.
HW decoding using Vulkan on HEVC yuv420p10le are also a success. 
HW decoding using Vulkan on AV1, using non-intel GPU are also success.

Here is the log. I suspect it somehow segfaulted given it didn't give out any error.

[CM_Intel]

Hello Nekl,

Thank you for posting your query on the Intel Community Forum!

Thank you for sharing the detailed information regarding your setup and the test results. We appreciate the effort you have put into isolating the issue.

Based on your observations, we understand that hardware decoding works as expected across multiple APIs, except for the Vulkan AV1 decode path on the Intel® Arc™ 140V GPU, where the application appears to terminate without any visible error.

To assist you further and investigate this behavior more effectively, we kindly request your support with the following:

1. Please perform a clean installation of the Intel graphics driver using Display Driver Uninstaller (DDU) and then install the latest available driver version.

I would also request you to perform the clean installation of the graphics driver using the DDU (Display Driver Uninstaller). You can refer the below mentioned link:

How to Use the Display Driver Uninstaller (DDU) to Uninstall a...

After uninstalling the drivers, please install the latest version of the graphics driver available.

I would recommend you to please update the graphics driver. You can refer the below mentioned link.

https://www.intel.com/content/www/us/en/download/785597/intel-arc-graphics-windows.html

2. Kindly confirm in which application(s) you are observing this issue.

3. If you have tested with other driver versions where this issue was not observed, please let us know the specific version(s). Additionally, we request you to share the logs/dump for the working scenario for comparison.

4. Intel System Support Utility (SSU) Report:

Please provide the SSU report to help us review the full system configuration:

Download link: How to get the Intel® System Support Utility Logs on Windows*

Note: While generating the report, kindly uncheck the “Networking” option.

Once we have the above details, we will analyze the information and assist you with the next steps accordingly.

Thank you for your cooperation and patience. Please feel free to reach out if you have any questions we are here to help.

Best regards,

CM

Intel Customer Support Technician

[CM_Intel]

Hello Nekl,

I hope you are doing well.

I am writing to follow up on our previous communication regarding your query. I wanted to check if you had the opportunity to review the suggested steps and share the requested details.

The information we requested will help us further analyze the issue and provide you with the most accurate guidance moving forward.

If you have already completed the requested actions, kindly share the results at your earliest convenience. In case you require any clarification or assistance with the steps, please feel free to let me know—I’ll be happy to help.

Thank you for your time and cooperation. I look forward to your update.

Best regards,

CM

Intel Customer Support Technician

[CM_Intel]

Hello Nekl,

I hope you are doing well.

I’m writing to follow up regarding your inquiry. Since I haven’t received a response from you, I will be proceeding with closing this inquiry at this time.

If you need further assistance, please feel free to submit a new request, as this thread will no longer be actively monitored. I will be happy to assist you further based on your new query.

Thank you for your time and cooperation.

Best regards,

CM

Intel Customer Support Technician