Re: Encoding DMA Buf with BGRx:0x0100000000000001 in h264 using vaapi

Hi,

Le 2023-11-03 à 10 h 46, xaterus--- via gstreamer-devel a écrit :
> With great interest I have read this article about Gstreamer DMABuf
> modifier negotiation in
> GStreamer(https://blogs.igalia.com/vjaquez/2023/08/08/dmabuf-modifier-negotiation-in-gstreamer/).
>
> So I want to encode an DMA Buf with the formatBGRx:0x0100000000000001
> into a h264 video stream using the VAAPI with the GStreamer VA Plugin.
>
> Using gst-inspect on vah264enc I can see I need to convert it to:
>        video/x-raw(memory:DMABuf)
>                    width: [ 32, 4096 ]
>                   height: [ 32, 4096 ]
>                   format: DMA_DRM
>               drm-format:NV12:0x0100000000000002
>
>
> So I thought about using   vapostproc to convert it. So using
> gst-inspect again I found out that: the src pad of vapostproc supports
> NV12:0x0100000000000002  (memory:DMABuf) which is great. But the sink
> pad does not supportBGRx:0x0100000000000001.
>
> Now I ask myself, is it my hardware that does not support the
> conversion betweenBGRx:0x010000000000000001  and
> NV12:0x010000000000000002, or is it Intel VAAPI or the gstreamer va
> plugin? Does the gstreamer va plugin support all hardware
> capabilities?

This is what the Intel dedicated video hardware support as far as I know.

> Also is there any other method to convert a DMA Buffer with
> BGRx:0x0100000000000001  with gstreamer in h264?

The question to ask is were did you get this format from, and how can 
you influence that.


>
> Yours sincerely
> Michael