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2015-05-05, 14:31
(This post was last modified: 2015-05-05, 14:32 by Eklar.)
Are OpenELEC test builds the only way to get HD audio working on RPi 2, or are there other (stable) releases or options (Xbian?)?
I understand that RPi 2 doesn't support DTS HD-MA and TrueHD bitstreaming due to hardware limitations. But it appears that some OpenELEC test builds decode HD audio streams and can send a 5.1 (and higher?) PCM signal via HDMI.
On that topic, how can I verify that it is indeed using the DTS HD-MA stream, rather than the DTS CORE stream which is included in the HD-MA signal? They can be hard to distinguish without being able to do a/b comparison with test discs. With bitstreaming it's easy as you can check you AVR lights. Does Kodi's stream info show what are the file contents, or what is actually being played, i.e. is it trustworthy?
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Excellent news, thank you for the info!
Glad to hear this is worked on, as HD audio support is quite rare on various media centers and players capable of connecting to a NAS.
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Milhouse
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You might want to post the mediainfo for both files - the s32p/s16p value may vary with the "bit depth" of the audio stream. All of my 7.1 DTS HD samples show "s32p (24 bit)" and have 24 bit depth. I'm assuming s32p/s16p means signed-32 and 16 bit quantities (24 bit samples may be treated as 32-bit?)
But certainly, if the OSD codec shows "fltp" in the first line then you're decoding using the old DTS Core decoding library.
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Milhouse
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The Pi1/Pi2 HDMI supports 8 channels up to 96Khz (or 4 channels at 192kHz), any more than this and it will resample down.
However virtually all DTS HD MA tracks on BluRay are 96KHz or below, so this 192Khz limitation shouldn't be a problem for the vast majority of users.
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fritsch
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Not for the sake of your "green" AVR lamp ... and no we don't plan to change the way we are handling passthrough audio.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.