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Ati 4550 and HDMI 7.1 audio output

 
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Wed Jan 28, 2009 2:38 pm    Post subject: Ati 4550 and HDMI 7.1 audio output

I've got an ATI 4550 and it handles all the HD I can throw at it. It has native HDMI out for audio/video and it cost ~$70.

I have this card http://www.ncix.com/products/index.php?sku=34812&vpn=GV%2DR455D3%2D512I&manufacture=Gigabyte

Chris.
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ecrabb
Forum Moderator


Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Wed Jan 28, 2009 4:14 pm    Post subject:

Thanks, Chris - Are you doing audio via HDMI with that card? I was looking at the Gigabyte R4650C...

Gigabyte GV-R465OC-1GI

It's only $51 at Newegg right now after the $20 rebate.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125253

Crazy cheap.

SC
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Wed Jan 28, 2009 4:24 pm    Post subject:

Yes I have 7.1 audio over HDMI.

Chris.

ecrabb wrote:
Thanks, Chris - Are you doing audio via HDMI with that card? I was looking at the Gigabyte R4650C...

Gigabyte GV-R465OC-1GI

It's only $51 at Newegg right now after the $20 rebate.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125253

Crazy cheap.

SC
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ecrabb
Forum Moderator


Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Wed Jan 28, 2009 4:33 pm    Post subject:

Cool!

Are you using PowerDVD, then? Does the audio bitstream or is it uncompressed at the computer/sending PCM?

Oh, and what are you using for a remote?

Not crazy about going back to HTPC, but I'm getting the itch to try 1080p/48 or 1080i/96... or something.

Thanks! Sorry for all the questions!

SC
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Wed Jan 28, 2009 4:40 pm    Post subject:

ecrabb wrote:
Cool!

Are you using PowerDVD, then? Does the audio bitstream or is it uncompressed at the computer/sending PCM?

Oh, and what are you using for a remote?

Not crazy about going back to HTPC, but I'm getting the itch to try 1080p/48 or 1080i/96... or something.

Thanks! Sorry for all the questions!

SC


I use PowerDVD , it uncompresses at the computer and sends out LPCM. For a remote I use a Pronto TSU-501 http://www.curtpalme.com/TSU501.shtm

I'm also not crazy about using the HTPC but it does what I want without to much difficulty. Ideally I would be streaming from my media server to my PS3 but the PS3 can't handle streaming VC1. As around 40% of BD content is encoded with VC1 this is a major problem.

Chris.
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ecrabb
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Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Wed Jan 28, 2009 4:45 pm    Post subject:

Thanks for all the info. OK, one last question and I'll shut it. I really didn't mean to crap in this thread...

What's the bridge from Pronto to PowerDVD, then? Serial IR dongle and girder?

Sorry, I've kind of been out of the HTPC groove for quite awhile.

Thanks!
SC
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Wed Jan 28, 2009 4:51 pm    Post subject:

ecrabb wrote:
Thanks for all the info. OK, one last question and I'll shut it. I really didn't mean to crap in this thread...

What's the bridge from Pronto to PowerDVD, then? Serial IR dongle and girder?

Sorry, I've kind of been out of the HTPC groove for quite awhile.

Thanks!
SC


I use a USB IR dongle that came with a Hauppage PVR150 that I'm not using anymore. The IR codes I captured from my xbox360 media center IR remote.

PM me if you have any other questions. Smile

Chris.
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benareeno



Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada

Posted: Thu Jan 29, 2009 3:44 am    Post subject:

I think my brother is streaming VC1...he has a computer app that converts on the fly...you familiar with it?
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ecrabb
Forum Moderator


Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Thu Jan 29, 2009 4:20 am    Post subject:

TVersity does on-the-fly real-time transcoding to stream to connected UPnP DLNA clients, but I don't know if it would handle 1080p/24 VC1 or not. You'd probably need a pretty damn healthy machine if it does.

http://tversity.com

Anybody tried it?

SC
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benareeno



Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada

Posted: Thu Jan 29, 2009 4:39 am    Post subject:

I'll see what he's using...but he definitely needed gigabit ethernet to do it. His machine is a core2duo....and it works ok. I think he has a Coldplay concert in VC-1...works great.
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Thu Jan 29, 2009 1:12 pm    Post subject:

Unless you have a super computer doing the transcoding there is no way to do this in real time. I had a Quad Core Extreme in one of my computers and it still took ~15 hours to convert a VC1 stream to an H264 stream at 1080P.

If anyone has a program that can do this more efficiently I'll try it but I have my doubts that this can be done in real time with current home computers. The only way I can see this as being possible would be with a hardware decoder/encoder...maybe this could be offloaded to the video card???

Chris.
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fuzzybee



Joined: 26 Sep 2006
Posts: 187


Posted: Thu Jan 29, 2009 2:03 pm    Post subject:

nuttall_chris wrote:
Yes I have 7.1 audio over HDMI.

Chris.

ecrabb wrote:
Thanks, Chris - Are you doing audio via HDMI with that card? I was looking at the Gigabyte R4650C...

Gigabyte GV-R465OC-1GI

It's only $51 at Newegg right now after the $20 rebate.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125253

Crazy cheap.

SC


Interesting. How does the audio transfer to the video card? Over the PCI/PCIe bus?
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Thu Jan 29, 2009 2:09 pm    Post subject:

fuzzybee wrote:
nuttall_chris wrote:
Yes I have 7.1 audio over HDMI.

Chris.

ecrabb wrote:
Thanks, Chris - Are you doing audio via HDMI with that card? I was looking at the Gigabyte R4650C...

Gigabyte GV-R465OC-1GI

It's only $51 at Newegg right now after the $20 rebate.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125253

Crazy cheap.

SC


Interesting. How does the audio transfer to the video card? Over the PCI/PCIe bus?


Correct.

Chris.
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fuzzybee



Joined: 26 Sep 2006
Posts: 187


Posted: Thu Jan 29, 2009 6:12 pm    Post subject:

Interesting. What sound card did you pair this with?
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nuttall_chris



Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada

Posted: Thu Jan 29, 2009 6:18 pm    Post subject:

fuzzybee wrote:
Interesting. What sound card did you pair this with?


You don't use a sound card in this application, you install HDMI audio drivers that work with the video card.

Chris.
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ecrabb
Forum Moderator


Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Thu Jan 29, 2009 6:39 pm    Post subject:

Yeah, the video card IS the sound card in this case.

Even with a traditional sound card... it's a bit of a misnomer if you're talking about using a sound card the way most of us did/do to output AC-3, DTS or PCM via SPDIF... In that application, it's more of a PCI-SPDIF interface, just like you'd have a PCI-USB interface or a PCI-IEEE1394 interface. The device drivers are still going to call it an "audio device", but it really is just an "interface"... to move bits from the computer to an external device.

In the case of some of the HDMI video cards, you just have that audio interface on the same card with the graphics engine/display adapter, and it all comes out the same cable (HDMI).

SC
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fuzzybee



Joined: 26 Sep 2006
Posts: 187


Posted: Thu Jan 29, 2009 9:52 pm    Post subject:

Very interesting.

I guess my next thought is when is this going to get Linux-capable drivers? Or perhapd my next thought is when am I going to be able to play native 7.1 HD audio content on Linux at all?

I may be looking more at the MythTV Windows port (if it ever gets close to being complete...)
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