VDPAU Usage Instructions?

[krakorar]

Where are instructions on how to build a pipeline with VDPAU? Do you have an example? ;-)

Thanks in advance.

Best Regards,

--
Rob Krakora
Senior Software Engineer
MessageNet Systems
101 East Carmel Dr. Suite 105
Carmel, IN 46032
[phone] Ext. 206
[phone] Fax

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[Carl-Anton Ingmarsson]

tis 2009-11-10 klockan 21:55 -0500 skrev Robert Krakora:
> Where are instructions on how to build a pipeline with VDPAU? Do you
> have an example? ;-)

Something like: "gst-launch filesrc location=/path/to/mpegfile !
optional_demuxer ! mpegvideoparse ! vdpaumpegdec !
vdpauvideopostprocess ! vdpausink"

should work. Where optional_demuxer is replaced by a suitable demuxer.

// Carl-Anton


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[Marc Leeman]

> Something like: "gst-launch filesrc location=/path/to/mpegfile !
> optional_demuxer ! mpegvideoparse ! vdpaumpegdec !
> vdpauvideopostprocess ! vdpausink"


I don't have nvidia hardware available at the moment so can't test it,
but can I feed back the decoded stream back into gstreamer? Would be
interesting to accelerate transcoding with this.



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br, marc

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[Jan Schmidt-6]

On Fri, 2009-11-13 at 12:27 +0100, Marc Leeman wrote:
> > Something like: "gst-launch filesrc location=/path/to/mpegfile !
> > optional_demuxer ! mpegvideoparse ! vdpaumpegdec !
> > vdpauvideopostprocess ! vdpausink"
>
>
> I don't have nvidia hardware available at the moment so can't test it,
> but can I feed back the decoded stream back into gstreamer? Would be
> interesting to accelerate transcoding with this.

Yes, there's the vdpauvideoyuv element to convert the VDPAU proxy
buffers back into real YUV buffers. There's also a commensurate
vdpauyuvvideo upload element.

J.

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[Carl-Anton Ingmarsson]

2009/11/13 Jan Schmidt <[hidden email]>

On Fri, 2009-11-13 at 12:27 +0100, Marc Leeman wrote:
> > Something like: "gst-launch filesrc location=/path/to/mpegfile !
> > optional_demuxer ! mpegvideoparse ! vdpaumpegdec !
> > vdpauvideopostprocess ! vdpausink"
>
>
> I don't have nvidia hardware available at the moment so can't test it,
> but can I feed back the decoded stream back into gstreamer? Would be
> interesting to accelerate transcoding with this.

Yes, there's the vdpauvideoyuv element to convert the VDPAU proxy
buffers back into real YUV buffers. There's also a commensurate
vdpauyuvvideo upload element.

Note that these elements will probably go away and be replaced by caps negotiation, eg. vdpaumpegdec
will be able to output video/x-vdpau-video and video/x-raw-yuv.

// Carl-Anton

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