2011-03-30, 20:16
SpectreX Wrote:The Ati HD5xxx/6xxx series card can bitstream HD audio up (DTS-HD and True HD) to 192Khz/24bit using ffdshow on Windows just fine, and have been doing so for over a year, so no, it`s not a hardware limitation. They were the first video cards capable of bistreaming HD audio, before that only the Asus HDAV 1.3 could to that
I have both a HD5450 card and a HD6230 (Zacate E350 APU) at home, if you want, i can help out with the testing, just send me a PM with a Live Mess/ Yahoo Mess/Skype ID and we`ll talk. I`m only in my first year of Computer Science college so i`m just learning the basics of C programming, so i can`t be much of assitance with the actual code.
The keyword being "On Windows", Anssi (The guy who developed the ffdshow bitstreaming) is a team member here and he stated in the AE thread that ATI uses some funky non-standard way of doing things in Linux so nothing over 48KHz (Or 6.144 Mbps) works.
Anssi Wrote:E-AC-3 should work (at least on Linux) on all cards that have 192kHz stereo support, which is probably everyone except ATI cards (see below). Also (again, at least on Linux) DTS-HD streams that are below 6.144 Mbps should work on all cards that have 192kHz stereo support (i.e. e.g. ION / GF9400 is enough) (I tested with the only full-length sample I have and the stream never peaked over 6.144 Mbps for the duration of the movie, so these do exist). This is not possible for low-bitrate TrueHD streams, though.
Support status of full (over 6.144 Mbps) DTS-HD / TrueHD (from a driver/hw standpoint; not yet in XBMC):
- NVIDIA GeForce 200 series works partially (I believe it is slightly buggy and it depends on the A/V receiver if it works or not), but on *Linux only*; the 200 series is not supported on Windows at all
- NVIDIA GeForce 400 series works
- ATI cards do not work on Linux; they seem to have a non-standard interface for anything else than 48kHz stereo audio, some information from AMD about that will be needed to get it working (or some serious trial-and-error by someone who has such a card )
- ATI cards work on Windows, but I don't know which ones have bitstreaming support
- INTEL HDMI graphics chipsets that should work, at least on Linux: IbexPeak (0x80862804), CougarPoint
- INTEL HDMI graphics chipsets that have no hw support: Cantiga, Eaglelake
- INTEL HDMI graphics chipsets that I don't know about: Bearlake, IbexPeak (0x80860054), Crestline
Source: http://forum.xbmc.org/showpost.php?p=665...tcount=125