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#1 | Link |
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AVS Special Member
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ATI Radeon HD 5800, 5700 & 5600 Thread: Supporting HD Audio Bitstreams (WITHOUT PAP)!
Dolby TrueHD Bitstreaming via ffdshow tryouts (TrueHD 7.1ch 96KHz.m2ts):
Dolby TrueHD Bitstreaming via PowerDVD 9 Ultra (Spider-Man 3): DTS-HD Master Audio Bitstreaming via PowerDVD 9 Ultra (FLYBOYS):
Some of the new features common to all the new GPUs (codenamed Evergreen) are:
HD Video Playback Capabilities
Among them the greatest feature for HTPC users is the support for bitstreaming Dolby TrueHD/DTS-HD Master Audio over HDMI. Finally we don't have to buy an expensive HDMI sound card for this purpose, although you have to wait until Q1 2010 to get the mid-range to low-end cards HD 5670/5650 and HD 5550/5350. Meanwhile, HD 5770/5750, expected in October 23, 2009, may be a good compromise for the mainstream users (not ultra expensive, good 3D performance implies good video post-processing). If you are building a gaming HTPC however, a high-end GPU is the way to go (roughly 1.5 times 3D performance increase from the current GPUs). AACS-Compliant Players Supporting HD Audio Bitstreaming
Non-AACS Players Supporting HD Audio Bitstreaming What about media players? Could, for example, MPC HomeCinema or the 7MC internal player output HD audio bitstreams? A key is the WAVEFORMATEXTENSIBLE_IEC61937 structure introduced in the Windows 7 SDK. This extends the WAVEFORMATEXTENSIBLE structure (introduced in Windows 2000) to describe new compressed HD audio streams such as TrueHD and DTS-HD. If the driver supports this extension, then the developer of an audio decoder (e.g. AC3Filter, ffdshow tryouts) should be able to implement HD audio bitstreaming easily. Please also read vladd's posts. Note that PAP (encrypting HD audio signals in a user-accessible bus such as the PCI Express bus) has nothing to do with HD audio bitstreaming. PAP is required only for an AACS-compliant player such as PowerDVD and TotalMedia Theater. (BTW PowerDVD uses the older WAVEFORMATEX structure to bitstream HD audio.) An innovative way of bitstreaming HD audio is being developed by albain, an ffdshow tryouts developer (suggested also by James at SlySoft). The idea is use PCM output with right description of non-PCM data, similar to AC3/DTS in S/PDIF. This uses WAVEFORMATEXTENSIBLE_IEC61937 structure for this purpose. So far the attempt is not successful yet, but apparently this is the most promising way. If you are interested, please follow the threads:
Update (December 2, 2009) ffdshow_rev3128_20091128_dbt_bitstream_beta42 finally succeeded in bitstreaming Dolby TrueHD. For details check
- Cl: clock - BW: bandwidth - SP: stream processors - TC: transistor count - P: power - Conn: connectors HD 5800 Series Architecture HD 5870 HD 5850 Comparison with HD 4870 HD 5700 Series Architecture HD 5770 HD 5750 HD 5670 Architecture HD 5500 Series HD 5450 The Latest Drivers Reviews HD 5870/5850 Reviews
If you are interested only in HD audio bitstreaming, just read the following (the majority of reviews neglected this aspect; I see the reason why no leaked information mentioned HD audio bitstreaming ):
Last edited by renethx; 01-27-10 at 09:56 PM.. |
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#8 | Link |
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AVS Special Member
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HD 5770/5750: A good compromise
Finally we will be able to get a cheap solution for bitstreaming HD audio! (You need a copy of PowerDVD 9 Ultra.) But you have to wait until Q1 2010 if you want a midrange/low-end cards (HD 5670/5650/5550/5350). The following cards replacing the current HD 4770 are expected in October 23, 2009 and are relatively inexpensive:
- HD 5750: $149 - HD 5770: $199 VR-Zone - [Rumour] ATI Radeon HD 5700 prices, release dates revealed Last edited by renethx; 09-23-09 at 02:46 AM.. |
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#9 | Link |
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AVS Special Member
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Hopefully a fanless/heatsink without additional power native HDMI version will be available soon
![]() Not like this... http://www.newegg.com/Product/Produc...-346-_-Product Last edited by hlkc; 09-23-09 at 02:49 AM.. |
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#10 | Link | |
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AVS Special Member
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Quote:
Last edited by renethx; 09-23-09 at 05:04 AM.. |
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#11 | Link |
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AVS Special Member
AVS CLUB MEMBER
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My question is will the driver's DirectShow audio renderer support the WAVEFORMATEXTENSIBLE_IEC61937 format?
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#12 | Link | |
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AVS Special Member
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Quote:
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#15 | Link | |
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AVS Special Member
AVS CLUB MEMBER
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Yup. If they implement support into the driver. The Xonar did not not support the extentions on their DirectShow renderers (I was hoping they did). I don't know if the Auzen offering does or not (my wife would kill me if I tried to spend any more money just to see).
If the new ATI cards support the extention, you won't be able to sell a used Asus or Auzentech for the cost of shipping. ffdshow tryouts supported the extentions for a while but they have been removed since no cards worked and it couldn't be tested. I also have my own "test" filter ready. (Test meaning it doesn't actually bitstream but just checks if the renderer supports the extentions. I'll add the rest once a card supports them.) |
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#17 | Link | |
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AVS Special Member
AVS CLUB MEMBER
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Quote:
I've tested with the Xonar and, just for kicks, the 4760. Neither supported it (I didn't expect the 4670 to though). Short of using a decoder that supports the extention, there is no real way to test. |
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#18 | Link |
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AVS Special Member
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I wonder how James is planning to make Slyplayer bitstream with 4000 cards.
In any case, it would also be interesting to see how the HDMI device shows up on the Windows panel, and if WASAPI exclusive works as well (or better) as the 4000 series. Unfortunately this card is too expensive for me, I'll have to wait at least until the 5750. |
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#22 | Link |
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AVS Special Member
AVS CLUB MEMBER
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This is great opfully other software players (arcsoft)? will offer bitstreaming over the ATI 5xxx families.
IF so then in Q1 I will get rid off my Asus slim whenthe first 5650 or 5670 that could be made fanless will show up. This is really cool. |
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#24 | Link | |
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Advanced Member
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Quote:
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#27 | Link | |
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AVS Special Member
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Quote:
They can count on me for Q1 for sure but not like the 4850 again!Last edited by hlkc; 09-23-09 at 12:29 PM.. |
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#29 | Link |
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Senior Member
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wow, that's awesome =). 2bad i just bought 4890 =(.
gonna have to wait til 6xxx series to upgrade =). nextguy, previous gens do NOT support bitstream at all whatsoever. they support bitstream converted to LPCM 7.1, but only at 24-bit/48kHz because of non-PAP. there are certain discs w/24-bit 96kHz, but it's quite rare. either way, the true bitstream is a welcome since there ain't no limitations now on LPCM either, u can now also do 24/96 on LPCM.
__________________
to the edge of eternity and depth of infinity, stupidity knows no bound. |
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#30 | Link | |
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AVS Special Member
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They're not supposed to support (at least officially) bitstreaming of THD and DTS MA at any bitrate. There was some confusion caused by some poor wording on ATI's site, but these 4000 cards are not bandwidth limited in any way. The limiting goes on in the player. These cards are capable of full 8-channel 192 kHz 24-bit audio output through HDMI (36.864 Mbps).
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