Interlaced encoding support in modern GPU

[OTorg]

Hi,

I'm currently working with DG2 (A380) graphics card.

Looks like it can't encode interlaced video to h.264 (AVC) format.

Is it really true by GPU design or I have a bug in drivers/VPL?

PS:

If interlaced signals support is removed from new video cards, then I think it is a good idea to reflect it in the feature specifications here:

https://www.intel.com/content/www/us/en/docs/onevpl/developer-reference-media-intel-hardware/1-1/overview.html

https://github.com/intel/media-driver#components-and-features

[RajashekarK_Intel]

Hi, Thanks for posting in Intel Communities.

In order to debug your issue further, can you provide the below details.

1. Processor Information:

2. OS Details:

3. oneVPL Version:

4. oneVPL GPU Runtime version: 

5. Your sample interlaced video as a zip file if possible.

Thanks and Regards,

Rajashekar

[OTorg]

I checked it in two environments:

1. Processor: i7-11700 and i7-6700

2. OS: Windows 10 Pro 22H2 and Windows 10 IoT Enterprise LTSC 21H2

3. oneVPL Version: 2.8

4. oneVPL GPU Runtime version: 2.8, driver 31.0.101.4255

5. sample interlaced video: since the input data is an uncompressed video, then you can take any arbitrary content, even a random set of bytes, it does not matter

To reprocude, you can use sample_encode from oneVPL SDK.

sample_encode.exe h264 -AdapterNum 1 -hw -d3d11 -w 1920 -h 1080 -f 25 -tff -b 3000 -timeout 20 -i input.raw -o NUL:

where -AdapterNum parameter should correspond to DG2 card

Without -tff parameter (which means progressive), the application works.

With -tff parameter (which means interlaced), the application is unable to initiate encoding engine.

[RajashekarK_Intel]

Hi,

We are checking on this internally and get back to you once we have an update.

Regards,

Rajashekar

[RajashekarK_Intel · Accepted solution]

Hi, Thanks for your patience.

We regret to inform you that, currently there is no support to Encode Interlaced video to h.264(AVC) on DG2 and this might be planned to feature in the long term. Could you please let us know if you need any further information on this.

Regards,

Rajashekar

[r00tb33r]

We would like to know if this fairly basic feature is planned for DG2.

It's absence is frankly unexpected.

[OTorg]

Hi Rajashekar,

Can you tell if the lack of interlacing will be in all modern/future dGPU/iGPU or only in some models?

[RajashekarK_Intel]

Hi,

Appreciate your interest, as mentioned earlier currently we don't have an ETA for this feature on DG2's, Your request will be kept on record in our database. We will continue to review this request and all other feature requests each year during planning for the next major release of the product, Please feel free to checkout the release notes of working hardware @OTorg .

cc: @r00tb33r 

https://www.intel.com/content/www/us/en/developer/articles/release-notes/oneapi-video-processing-library-release-notes.html

Regards

Rajashekar

[RajashekarK_Intel]

Hi

Thank you for sending us this request to improve our product, If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.

Regards,

Rajashekar

[inFernickk]

Hello, I seem to be having the same issue with an integrated GPU. My laptop is an Intel Core Ultra 9 Processor 185H. Is there a way to know if interlace encoding is supported on this hardware? The hardware feature pages don't mention which GPUs have interlace encoding capabilities, just de-interlacing.

Best regards,

Fernickk