Pass Thru DTS-HD, Master Audio?

[yucky]

Does Media Player Classic HC's own DTS Transform filter pass-thru DTS-HD, DTS Master Audio when set to SPDIF?

I have some Blu-Ray remux files I want to play to my DTS-HD / Master capable amplifier.

[Snowknight26]

No it can't. No reason for it to do so either as S/PDIF can't handle that kind of bandwidth.

[moviefan]

Would MPC-HC be able to pass DTS-HD through via HDMI to my receiver? I haven't found a way to do this yet...

[tetsuo55]

Would MPC-HC be able to pass DTS-HD through via HDMI to my receiver? I haven't found a way to do this yet...No, it cannot.
best bet for now is sending 7.1 LPCM.

You can remux any HD audio stream to FLAC, and then decode the flac to LPCM
Works for SPDIf too but only with stereo (HDMI has 2-7.1 support depending on your model)

[yucky]

Interesting, while the SPDIF standard is too bandwidth limited for todays HD soundtracks, it isn't the only digital path available from the PC to amplifier these days.

With the new HDMI soundcards such as one from Asus and the soon to be released Auzentech, I think it would be wise to allow the software to pass such HD audio soundtracks.

[tetsuo55]

keep one thing in mind, open source applications probably will never get access to the protected path required to send HD audio untouched over HDMI.

[yucky]

Good point. I am aware that PAP (protected audio path) is required to send original Blu-Ray and HD-DVD audio over the HDMI. However, (please enlighten me here) isn't the only reason why PAP is need, is because Blu-Ray and HD-DVD are encrypted? If a remux is created from the Blu-Ray / HD-DVD, hence encryption removed, wouldn't we be able to sent the audio data thru HDMI without using the PAP?

[tetsuo55]

Even decrypted streams have to pass over PAP.

This is design choice. if someone managed to bypass the Bluray security they would still be unable to copy the stream (this is ofcourse already possible)

[Blue_MiSfit]

Just to clarify. Is there any real reason to bitstream HD audio tracks, aside from real-time, direct from disc playback?

Provided you have Arcsoft, eac3to can bit-perfect transcode any HD audio format to FLAC, which can then be bit-perfect sent as LPCM to a compatible receiver. Short of maybe some metadata or downmix info, would this be functionally any different from bitstreaming the source?

~MiSfit

[tetsuo55]

that requires buying the arcsoft software, and having to go through at least a remuxing hassle.

Also letting the reciever do all the work saves cpu power.
ffdshow now has bitstreaming code, but it doesn't work and microsoft isn't responding to the support request.

[Blue_MiSfit]

Indeed. Without arcsoft you can only work with the DTS core. Good enough IMO, but if you must have the high resolution stream... ;)

~MiSfit

[Mr Alpha]

The just launched Radeon HD 5xxx series support bitstreaming both DTS-HD Master Audio and Dolby TrueHD, along with 8-channel LPCM.

[tyee]

Just found this thread as I was googling how to get AC3 or dts core out my hdmi laptop link to onkyo receiver to decode. As of now I only get 2 channel stereo out hdmi. I'm using MPC-HC, is it possible to get ac3 or dts core 5.1 out hdmi from a laptop?

[Blue_MiSfit]

Should be. Lots of PC HDMI connections actually use S/PDIF for audio - so you should be able to bitstream your DTS or AC3 streams.

Now, I've never tried this, so I'm not 100% sure :)

Try using ac3filter?

~MiSfit