Import Intel dmabuf into pipeline

Regina König koenig_regina at
Mon Dec 13 16:02:38 UTC 2021

Thank you very much. I will try it :)

On 13.12.21 15:09, Nicolas Dufresne wrote:
> Le lundi 13 décembre 2021 à 12:03 +0100, Regina König via gstreamer-devel a
> écrit :
>> Hi everybody,
>> I want to import an Intel is shared via a filedescriptor and
>> I am wondering if is the only possible way to import it with
>> gst_egl_image_from_dma_buf_direct(). I don't want to create an image
>> (this is an uneccessary step) but directly encode it with H264. I also
>> tried to import it with "fdsrc" but it seems to be only suitable for
>> concole, not for dmabuf's. What is the most efficient way to get access
>> to a dmabuf to directly encode it?
> Just wrap your DMABuf FD using GstDMABufAllocator, place the GstMemory into a
> GstBuffer, add GstVideoMeta to signal the padding and offsets and push that
> buffer toward the VAAPI encoder. Note that until we have proper drm modifier
> support, there will still be few oops on complex HW setup, but will work with
> integrated graphics. Oh, and note that VA-API (the API) is strictly limited to 1
> DMABuf per image.
>> Thanks in advance,
>> Regina König

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