[WINDOWS][PATCH]Bitstream output of HD audio formats

(2012-04-07 08:42)T800 Wrote:  I'm going to try a HD4650 in my HTPC after the smooth picture getting so much praise in here.

Other than un-installing the Nvidia drivers, swapping the cards and downloading new AMD drivers from here:
http://support.amd.com/us/gpudownload/Pages/index.aspx


The drivers look like 12.3 but many people are mentioning 12.1, should I look for 12.1 instead?

Is there anything else I have to do?

I would just grab the latest drivers. We know the 12.1 drivers work well, but I haven't heard of any bugs with newer ones.

Once you've installed it and the drivers you will need to select the AMD HDMI High Definition Driver as the audio driver in both Win and XBMC, and set up your other audio settings. Make sure you enable Exclusive Mode in the Windows audio panel under Advanced.

I would also recommend going into Catalyst Control Center and enabling (under video>quality) Ensure smooth playback. There's a nice demo mode too which allows you to tweak options and it applies them to half the screen so you can see the difference.

Enjoy

(2012-04-07 23:25)bluray Wrote:  

(2012-04-07 22:45)pro510 Wrote:  

(2012-04-04 16:47)bluray Wrote:  That is what I thought, because I never see PDVD bitstream without seeing HD audio formats in W7 control panel. So, what GPU are you trying to make it bitstream with the patches?

XFX GTX570

That is a powerful GPU, and you should be able to bitstream with it. I think that after you sort out your AVR, you should be able to bitstream with the patches....

The GTX570 doesn't support hd audio bitstreaming. Only 560 and below support bitstreaming. For some reason nvidia decided not to support it on their high end gaming cards. Might be different in the 6xx series but definitely the case in the 5xx and 4xx series.

(2012-04-07 18:07)DanielaE Wrote:  Great - thanks!

I can reproduce both problems with my HD audio build, with vanilla Eden they are playing fine here on my rig. I will look into this - stay tuned!

(2012-04-07 21:29)DDDamian Wrote:  Thx Daniela - I've been so busy with AE stuff I haven't been able to support here as much the last few weeks. Nice to see you on the job

Thank you, both

@minimoe - this thread turned into one of the best "mini-communities" on the forum

(2012-04-07 23:55)apgood Wrote:  The GTX570 doesn't support hd audio bitstreaming. Only 560 and below support bitstreaming. For some reason nvidia decided not to support it on their high end gaming cards. Might be different in the 6xx series but definitely the case in the 5xx and 4xx series.

I thought that I read several reviews, and it said that it supports bitstreaming. Here is one of review- Nvidia GeForce GTX 570 review

bitstreaming is possible but just for standard DTS and DD codecs, not for MA
you can decode DTS-HD and TrueHD in the software player and send it out the video card as an 8 channel uncompressed LPCM track.

@bluray - comment from that same review.


That said, sometimes the drivers are well behind the hardware if you want to wait.

(2012-04-08 01:21)bluray Wrote:  

(2012-04-07 23:55)apgood Wrote:  The GTX570 doesn't support hd audio bitstreaming. Only 560 and below support bitstreaming. For some reason nvidia decided not to support it on their high end gaming cards. Might be different in the 6xx series but definitely the case in the 5xx and 4xx series.

I thought that I read several reviews, and it said that it supports bitstreaming. Here is one of review- Nvidia GeForce GTX 570 review

If you check out avsforum and sites like anandtech it's well documented that hd audio bitstreaming isn't supported. Unpacking to pcm works fine of course as nimo said.

(2012-04-08 02:45)DDDamian Wrote:  That said, sometimes the drivers are well behind the hardware if you want to wait.

That's sad....

I don't get it...they have hardware to support bitstreaming, but they released it to consumer without driver to support it. It have been on the market for a while too.......

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(2012-04-08 04:06)apgood Wrote:  Unpacking to pcm works fine of course as nimo said.

We knew that....if we do that, it'll defeat the purpose of these awesome patches....

Thanks for the replies. I never even thought to check if it bitstreamed HD, just assumed it would. That'll teach me.