Any opensource MPEG-2 decoder with DXVA

gowthamhk · 8th June 2009, 11:56

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

tetsuo55 · 8th June 2009, 18:34

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)

Mangix · 8th June 2009, 21:38

the Microsoft decoder that comes with Vista and Windows 7 uses DXVA. but hardware acceleration is a bit useless for MPEG2...

tetsuo55 · 8th June 2009, 21:40

Quote:

Originally Posted by Mangix

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

gowthamhk · 9th June 2009, 05:43

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.

gowthamhk · 11th June 2009, 07:51

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

fashionman · 17th October 2012, 11:15

I want to study it, have you the document about DXVA for MPEG2?

Thanks
Fashionman

pandy · 17th October 2012, 12:05

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.

wanezhiling · 18th October 2012, 08:09

Quote:

Originally Posted by pandy

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.

8th June 2009, 11:56	#1 \| Link
gowthamhk Registered User Join Date: May 2009 Posts: 6	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

8th June 2009, 18:34	#2 \| Link
tetsuo55 MPC-HC Project Manager Join Date: Mar 2007 Posts: 2,317	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) __________________ MPC-HC, an open source project everyone can improve. Want to help? Test Nightly Builds, submit patches or bugs and chat on IRC

11th June 2009, 07:51	#6 \| Link
gowthamhk Registered User Join Date: May 2009 Posts: 6	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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8th June 2009, 21:38	#3 \| Link
Mangix Audiophile Join Date: Oct 2006 Posts: 353	the Microsoft decoder that comes with Vista and Windows 7 uses DXVA. but hardware acceleration is a bit useless for MPEG2...

9th June 2009, 05:43	#5 \| Link
gowthamhk Registered User Join Date: May 2009 Posts: 6	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.

17th October 2012, 11:15	#7 \| Link
fashionman Registered User Join Date: Oct 2012 Posts: 2	I want to study it, have you the document about DXVA for MPEG2? Thanks Fashionman

17th October 2012, 12:05	#8 \| Link
pandy Registered User Join Date: Mar 2006 Posts: 1,050	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.