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DTS-HD MA decoder
_mē_
post May 10 2011, 17:13
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Is there any software decoder for it?
Preferably a free one.
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andy o
post May 10 2011, 18:21
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It depends on the version too. I don't think the codecs in TMT5 or TMT 3 .190 can be used externally. TMT3.190 I think downsamples, at least when used with MPC-HC. The one I'm using is from TMT3.185
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06_taro
post May 27 2011, 11:19
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QUOTE (andy o @ May 11 2011, 01:21) *
It depends on the version too. I don't think the codecs in TMT5 or TMT 3 .190 can be used externally. TMT3.190 I think downsamples, at least when used with MPC-HC. The one I'm using is from TMT3.185

After installed TMT,

Step 1. Open mpc-hc.exe in a hex editor (i recommend HxD) and replace the two occurences of the hex string "33806DE046DBCF11B4D100805F6CBBEA" with "578F49F699B3434AA6FAF694AD42B9BE" in the file and save.

Step 2. Add
CODE
[HKEY_LOCAL_MACHINE\SOFTWARE\ArcSoft\MPEG Codec\Decoder Setting\]
AudioOutputMode=17
AudioDynamicRange=0
in %windir%\win.ini

For a 7.1ch 24bit 96kHz HDMA as an example, by finishing step 1 you can only get a downsampled 5.1ch output with MPC-HC & TMT. After done step 2 the 7.1ch 24bit data will be exactly decoded. At least when I test 5.0.1.87 and link it with ffdshow raw audio filter, I can see the tray icon show the input is a 7.1ch 96000Hz uncompressed PCM.

Another alternative is to use LAV Audio Decoder version 0.26 or newer, and put dtsdecoderdll.dll from the TMT3/5 Codecs directory into LAV Audio's directory. Then LAV Audio will use the ArcSoft DTS decoder to decode DTS-HD with no limitation. And there's no need to modify mpc-hc's binary or win.ini any more.

This post has been edited by 06_taro: May 27 2011, 11:20
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andy o
post May 28 2011, 00:08
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That's for playing with MPC-HC, but for extraction with eac3to the previous posts still apply.

I don't know what your "step 1" does though. "step 2" doesn't make the file not downsample, it's just for setting the output format to 7.1. If you don't do that, then you have to set it manually every time you open MPC-HC, and that was the main reason we didn't use the Arcsoft decoder for DTS-HD MA for a long time, even though it worked technically, before someone figured that out. You also need a special checkactivate.dll, but as you said nevcairiel at doom9 added the functionality to LAV audio so all that is moot now, for playing in a directshow player.

That the file is downsampled or not when using the arcsoft decoder, depends on the version.
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