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Old 26th April 2010, 19:48   #1  |  Link
Grizz111
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AC3Filter, DTS-HD and S/PDIF problem

Hello.
I'm using MPC-HC with AC3Filter for playing bluray movies.
Video through HDMI to tv.
Audio through S/PDIF to 5.1 system.

So far i didn't have almost any problems with this combination, but the last movie i bought has an English stream in DTS-HD
Quote:
DTS-HD Master Audio English 0 kbps 5.1 / 48 kHz / 24-bit (DTS Core: 5.1 / 48 kHz / 1509 kbps / 24-bit)
This stream doesn't get passed through by AC3filter, but instead it gets encoded into 640 kbps AC3 and then sent through S/PDIF. Problem is that this degrades audio quality a lot.
I tested my sound system, and it supports both DTS-HD, 24-bit PCM and 48000 sample rate.

Is it possible to force AC3Filter to passthrough DTS-HD?
Can some other software do it?
Does S/PDIF even support DTS-HD? If so, is it possible to somehow encode DTS-HD to regular DTS (1509 kbps) and then pass it through S/PDIF?

Thanks for your help
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Old 26th April 2010, 20:02   #2  |  Link
clsid
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AC3Filter does not support it, but ffdshow does.
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Old 26th April 2010, 22:16   #3  |  Link
Grizz111
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Don't know what i did, but now it passes it through normaly :S. On audio system screen I can read it's DTS. If i found out what I did I'll let you know.
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Old 26th April 2010, 22:20   #4  |  Link
clsid
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DTS-HD has a DTS core for backwards compatibility. So it is passing through the core.
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Old 27th April 2010, 03:48   #5  |  Link
Midzuki
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Quote:
Originally Posted by Grizz111 View Post
Don't know what i did, but now it passes it through normaly :S. On audio system screen I can read it's DTS. If i found out what I did I'll let you know.
At least you unchecked the built-in AC3 encoder,
granted.
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