can / will 5750 handle L5.1 8+frames?

[mikek753]

hi all,

Is 5xxx come with better HTPC support then 4xxx?
Will 5750 HW accelerate x.264 with L5.1 8+ frames? That MPC-HC can use via DXVA.

Any ideas?

 

[MarcVenice]

Can the HD 5870 do it ? If so, the HD 5770 can do it too.

 

[mikek753]

I don't know about any 5xxx cards
so far I haven't seen any htpc related review / video tests for 5xxx cars

 

[MarcVenice]

Give me some of the material you're talking about, and I'll let you know, sometime soon? TBH I don't know much about htpc support, but I can learn

 

[plonk420]

is this reference or bframes? i accidentally wasn't paying attention and used 10 references @ 1920x816 and it played ok on dxva (5870 and 9400). bframes don't have a noticeable difference (thousandths or ten thousands in ssim, hundredths in psnr) whereas refs hugely raise ssim and psnr, at least in my tests

 

[plonk420]

here's 10 reference frames, IIRC: http://rapidshare.com/files/29...med-muxed_001.mp4.html

 

[wlee15]

No graphics card support DXVA decoding of Level 5.1 h.264 content, what nVidia cards can do is slightly over spec L4.1 content. L5.1 content is required to support resolutions of 1920x1080 at 120 frames per second (among other odder resolutions) and support bitrates of up to 300 megabits.

 

[plonk420]

i was dismayed at things not being able to do 1080p60 :/

 

[lopri]

It's not a hardware issue but a software (drivers) issue. Right now AMD GPUs will flat-out refuse to off-load those clips with more than 4 reference frames.

 

[wlee15]

ATI cards can do more than 4 reference frames as long as within L4.1 limits. The formula for max ref frames for L4.1 content is maximum ref = 12288 * 1024 / ( width * height * 1.5).

 

[tcsenter]

Originally posted by: mikek753
Is 5xxx come with better HTPC support then 4xxx?
Will 5750 HW accelerate x.264 with L5.1 8+ frames? That MPC-HC can use via DXVA.

HTPC = what is commercially available in home theatre and movie formats. Nothing is commercially done in L5.1, so what's the point?

 

[mikek753]

Originally posted by: tcsenter

Originally posted by: mikek753
Is 5xxx come with better HTPC support then 4xxx?
Will 5750 HW accelerate x.264 with L5.1 8+ frames? That MPC-HC can use via DXVA.

HTPC = what is commercially available in home theatre and movie formats. Nothing is commercially done in L5.1, so what's the point?

the point is about did ATI catch up with nVidia for HTPC or not.
I don't care if this software or hardware issue / limitation, where I care about solution that can play L5.1/ 8+ frames without using CPU for that matter.

If you don't need L5.1 that's fine, where I need this for my HTPC.

For more info DXVA
from this link you can get samples of L5.1 video as well.

I hope you can understand my question ;-)

 

[tcsenter]

Originally posted by: mikek753
the point is about did ATI catch up with nVidia for HTPC or not.
I don't care if this software or hardware issue / limitation, where I care about solution that can play L5.1/ 8+ frames without using CPU for that matter.

Your question impliedly asserted the limitation was hardware. "Is 5xxx come with better HTPC support then 4xxx?"

This implied assertion was wrong, and it was pointed out to you. I don't care if you don't want to know what the limitation is. Learn how to better phrase a question.

If you don't need L5.1 that's fine, where I need this for my HTPC...I hope you can understand my question ;-)

I understand your question just fine. You and at most 300 other people in the world want to play a specialty video format for which there are about a dozen clips in total on their home computers with consumer hardware.

When more than 300 people in the world express an interest in playing such content, I'm sure ATI will take an interest in supporting them. <--- that is essentially the answer given by the moderator of AMD Game Forums to this very question.

Contact ATI Catalyst Driver team and request it. The more requests they receive, the higher it might get on their priority list than #968.

 

[mikek753]

tnx for the answer
for NV it was about "open" CUDA in video driver and as result many software were able to use video h/w acceleration including L5.1/8+ - as before PureVideo was required.
I think that is driver limitation for ATI as well and will ATI address it or not I don't know.
That's why I asked if that was addressed for newer 5xxx cards?
Are 5xxx cards have the same UVD chip as 4xxx cards? Or there is something new?

Also my question has nothing to do with Gaming ability of the card.
Why I should ask this in gaming forum?
BTW - what's email for contacting ATI Catalyst Driver team?

many who want build own HTPC would need video card with HDMI (video + audio) to pass it to AVR that can handle .264 including L5.1
ATI was 1st with audio / hdmi support
now NV has GT 220 that can do L5.1 and got HDMI as well.

 

[0roo0roo]

does anyone know the cuda coreavc limitations on such things?
http://forum.corecodec.com/viewtopic.php?f=3&t=2653
only found one on reference frames.

 

[wlee15]

Frankly I don't see this as a priority since this basically only useful for 1080p (since L4.1 can allow for more store frames at lower resolutions) animated content (which is really the only content to benefit from greater than 4 stored frames).

 

[mikek753]

amd forum

looks like no luck with newer 5xxx cards and 9.10 driver
I think I will look for GT 220 or G 210 for htpc

 

[lopri]

Here is what's new regarding UVD2 engine in HD 5000 series.

http://www.anandtech.com/video/showdoc.aspx?i=3643&p=10

I really can't say one way or the other in this matter. On one hand, I am puzzled why AMD can't enable this feature when its hardware is more than capable of, but on the other hand I haven't seen those 'exotic' clips outside threads like this one.

 

[plonk420]

i don't think CoreAVC has (m)any limitations... as long as it's a legit stream. i haven't had success getting a 2160p (either 24 or 25 or 30 fps) stream to play, tho. haven't upgraded it since 1.8 or 1.9 or so (if it ain't broke, don't fix it)

 

[topsyturvy]

In windows XP I have no trouble playing L5.1 content using hardware decoding. This includes the "test_hd_9refs_high_l5.1.mp4" video in mikek753's DXVA link

I havea HD 4650 AGP card and i'm using powerdvd 8 H264 codec on a P4 2.4GHz machine.

Unfortunately I am unable to get hardware decoding to work for L5.1 videos in Windows 7. The codec is the same, the catalyst version is the same but I get green artifacts...

This is bugging me to no end.

Anyway, what I am trying to say is that at least the 4650 supports L5.1 videos so its safe to say that 5xxx should also. Whether you will get it to work in Windows 7 I cant say.

If anyone had any explaination for why its not working in windows 7 for me please let me know. This is the main reason I'm not upgrading (a lot of downloadable TV HD rips are L5.1)