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Old 8th June 2009, 11:56   #1  |  Link
gowthamhk
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Any opensource MPEG-2 decoder with DXVA

Hi,

I did some search to come up for nothing on any open source MPEG-2 decoder with DXVA support as well. I was wondering MPC supports DXVA for H264 but not for MPEG2.

If anybody knows any open source MPEG-2 decoder with DXVA support, Please reply.

Thanks
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Old 8th June 2009, 18:34   #2  |  Link
tetsuo55
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Mpeg2 is so relatively easy to decode in software that no-one has done this yet.
only a small sampling of videocards actually have hardware mpeg2 decoding.(most of it is assisted decoding which no open source application supports)
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Old 8th June 2009, 21:38   #3  |  Link
Mangix
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the Microsoft decoder that comes with Vista and Windows 7 uses DXVA. but hardware acceleration is a bit useless for MPEG2...
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Old 8th June 2009, 21:40   #4  |  Link
tetsuo55
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Quote:
Originally Posted by Mangix View Post
the Microsoft decoder that comes with Vista and Windows 7 uses DXVA. but hardware acceleration is a bit useless for MPEG2...
It's not open source though
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Old 9th June 2009, 05:43   #5  |  Link
gowthamhk
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Hi tetsuo55 and Mangix, Thanks for your info

Even though its a relatively simple decoder, I wanted to use it to take off the load from CPU as much as possible. For that I thought of referring one if available.
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Old 11th June 2009, 07:51   #6  |  Link
gowthamhk
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ModeMPEG2_VLD support GPU

Hi,

DXVA1.0 spec talks about Slice Control Buffers for off-host VLD processing. But I use nVidia Quadro FX 540 which does not support MPEG2_VLD (as from DXVA checker).

That means, I can't pass Slice Control Buffers to process VLD on my machine right?

Anybody has idea regarding which card supports MPEG2_VLD mode?

Regards,
Gowtham
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Old 17th October 2012, 11:15   #7  |  Link
fashionman
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I want to study it, have you the document about DXVA for MPEG2?

Thanks
Fashionman
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Old 17th October 2012, 12:05   #8  |  Link
pandy
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ATI (at least in past) have full MPEG-2 HW decoding, and for all that ask why HW decoding for MPEG-2 i will say - jitter is much lower than for software solutions and yes, this is visible.
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Old 18th October 2012, 08:09   #9  |  Link
wanezhiling
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Quote:
Originally Posted by pandy View Post
ATI (at least in past) have full MPEG-2 HW decoding
About AMD/ATI, only UVD3.0 cards(HD6000/7000) support full MPEG-2 HW decoding.
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