TrueHD/DTS-HDMA bit-streaming on AMD 5xxx GPUs

[honai]

The new AMD Radeon 5xxx GPUs (5870/5850 launched today) allow for bit-streaming Dolby TrueHD/DTS-HD Master Audio over HDMI:

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

So do we already have a working open-source toolkit (VC-1/AVC + THD/DTSMA -> MKV -> Matroska Splitter -> Video/Audio renderer) to support this feature?

[NanoBot]

Hi,

At first, I don't know if the matroska muxxers and splitters available are able to handle DTSMA and THD, so I can't answer your question.

Nevertheless, since those new ATI cards at long last are also supporting 6 and 8 channel LPCM through HDMI and your target container is matroska, there is a better solution which works perfect here.

I would suggest to convert all lossless tracks to 6/8 channel flac ( depending on your speaker setup ) before muxxing them into a matroska file. Flac in matroska works fine, and during the playback, the audio simply is send as 6/8 channel LPCM to your surround amp. And the bonus is that flac has a better compression than THD or DTSMA, so your resulting files are smaller when using flac instead of keeping the original THD or DTSMA tracks.

C.U. NanoBot

[tetsuo55]

The new AMD Radeon 5xxx GPUs (5870/5850 launched today) allow for bit-streaming Dolby TrueHD/DTS-HD Master Audio over HDMI:

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

So do we already have a working open-source toolkit (VC-1/AVC + THD/DTSMA -> MKV -> Matroska Splitter -> Video/Audio renderer) to support this feature?Ffdshow has an experimental build that together with MPC-HC has full support for this.
We have never been able to actually get it to work, because none of the dev's and testers have a compatible hdmi card.

[tetsuo55]

Hi,

At first, I don't know if the matroska muxxers and splitters available are able to handle DTSMA and THD, so I can't answer your question.They all do

Nevertheless, since those new ATI cards at long last are also supporting 6 and 8 channel LPCM through HDMI and your target container is matroska, there is a better solution which works perfect here.ATI has supported multichannel LPCM for a long time

I would suggest to convert all lossless tracks to 6/8 channel flac ( depending on your speaker setup ) before muxxing them into a matroska file. Flac in matroska works fine, and during the playback, the audio simply is send as 6/8 channel LPCM to your surround amp. And the bonus is that flac has a better compression than THD or DTSMA, so your resulting files are smaller when using flac instead of keeping the original THD or DTSMA tracks.

C.U. NanoBoti Couldn't agree more

[G_M_C]

Ffdshow has an experimental build that together with MPC-HC has full support for this.
We have never been able to actually get it to work, because none of the dev's and testers have a compatible hdmi card.

Where can i get that build ? I've got an ASUS Xonar HDAV, so i might be able to test ?

[tetsuo55]

Where can i get that build ? I've got an ASUS Xonar HDAV, so i might be able to test ?http://www.mediafire.com/?sharekey=05fb19b4b2e4495ee7c82ed4b8f0c380e04e75f6e8ebb871

Get BETA 5

[G_M_C]

http://www.mediafire.com/?sharekey=05fb19b4b2e4495ee7c82ed4b8f0c380e04e75f6e8ebb871

Get BETA 5

K, downloaded. Have to go to work now, but will install when i get back. Will any old MPC do ?I've been using Gothsync's version lately, or can i better get a stable MPC-HT for instance ?

[tetsuo55]

K, downloaded. Have to go to work now, but will install when i get back. Will any old MPC do ?I've been using Gothsync's version lately, or can i better get a stable MPC-HT for instance ?any mpc will work

[G_M_C]

K, installed and set up ffdshow B5. Set DTS-HD to bitstreaming in the output tab (also all other formats). Set uncompressed output to LPCM too.

Only have a DTS-MA video clip in m2ts format at hand. Used this to test.

Set MPC-HT (1.2.1044.0) to use its internal TS filter. It does recognise the DTS-HD audio track. But the track isnt bitstreamed, it does bitstream the core (to my Onkyo TX-SR875). Other problem is that the video stalls. The audio keeps playing, but the video freezes. Clicking on the video-window does show the frame that should have been shown, but also frozen.

Setting MPC-HT to not use its internal TS filter, using Haali media splitter in stead; The video works fine, but the audio-track is seen als DTS (core only). Thats bitstreamed also.

Cross-checked with ArcSoft total media; Both video and audio are recogized fine. Video plays as it should do, and DTS-MA is bitstreamed/passed through to my receiver.

What can i do to help to get DTS-MA bitstreaming working with MPC/ffdshow ?

[tetsuo55]

its best if you contact albain directly

[G_M_C]

its best if you contact albain directly

Thx. I've cross-posted some of the contents of this thread to the ffdsow_tryouts tread. Hopefully he will see it.