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[aguyingreene]

For some reason JRiver 20 will not not play the DTS-MA 2.0 tracks.  All you get is silence.  I noticed this on The Party and What's New Pussycat as well.  Plays fine in PowerDVD 14.  All other DTS-MA tracks from other publishers play fine.  Any suggestions?

[fitbrit]

I just checked my DTS-HD MA 2.0 videos and they all playback just fine here. Build 54.

[aguyingreene]

Thanks.  This only occurs on a few Kino discs only.  This also happened on Topkapi.  Strange but no big deal.

[fitbrit]

Only on the discs themselves?
Have you tried/considered ripping the movies into mkv?

[Hendrik]

I tried to get a copy of one of these discs, but the version I got has mono PCM tracks, and not DTS-HD MA. Sorry.
If you are using the dtsdecoderdll.dll for DTS-HD MA playback, make sure you got a "good" version, either 1.1.0.0 or 1.1.0.8/9, but not anything in between.

[CountryBumkin]

If you are using the dtsdecoderdll.dll for DTS-HD MA playback, make sure you got a "good" version, either 1.1.0.0 or 1.1.0.8/9, but not anything in between.

I was not aware of the difference in versions. I currently have 1.1.0.7 on all my computers.
What is the issue with the "not good" versions? I have not noticed any problems with playback.

I'll start looking for a download of the newer version, regardless, just to be safe.

[Hendrik]

They fail with mono streams, and seeing as my PCM disc uses mono, I could imagine the DTS HD one also having this configuration.

[6233638]

1.1.0.1 is the version you want for the highest quality audio.
 
It doesn't have the mono or 6.0 bugs that exist in other versions, and decodes lossy DTS tracks to 24-bit rather than 16-bit.
 
If I recall correctly, there is no one version with all the issues fixed - there is no version which decodes 2.1 tracks correctly - but this has the least compromises.
 
Ideally the decoders would output floating-point rather than integer values, but a 24-bit output is better than 16-bit.
 
Hendrik, let me know if you want a sample of a mono DTS HD track. My "Network" disc is mono DTS HD.

[CountryBumkin]

Can you e-mail me a copy (ver .01) or put a copy in your drop box? I can't find a copy (of any version) from a trustworthy source on-line anywhere.
Thanks

[Hendrik]

I have samples of those.

And fwiw, 1.1.0.8 decodes all important things properly, lossy to 24-bit, mono .. only 6.0 is not working to my knowledge, which i've never seen in any real-world sample.
The advantage of 1.1.0.8 is that its easily available, since it was shipped with TMT for a long time.

[6233638]

1.1.0.8 is definitely decoding "16-bit" tracks to 16-bit, while 1.1.0.1 decodes to 24-bit:


1.1.0.8


1.1.0.1

 
I don't think I've encountered 6.0 discs either, but it's still worth mentioning that 1.1.0.8 does not decode them correctly.
I think I got 1.1.0.1 off a TMT3 disc which was bundled with one of my optical drives years ago.
 
Those two issues aside, 1.1.0.8 should be fine though - other versions may have problems with mono or other tracks.

[Hendrik]

Apparently there is also a 7.1 channel config that everything before 1.1.0.8 choke on. There just isn't a perfect version!

[6233638]

Apparently there is also a 7.1 channel config that everything before 1.1.0.8 choke on. There just isn't a perfect version!

Unless there is a specific 7.1 configuration, it appears to be decoding correctly for me in 1.1.0.1
I can't seem to find a 6.0 disc in my collection at all to test 1.1.0.8; I'm only finding 5.1 or 6.1 tracks.

You're correct that there is no one version that is "perfect".

Decoding lossy DTS to 24-bit rather than 16-bit tracks seems worthwhile though, if you have the option of using 1.1.0.1

I wonder, might it be possible to have LAV Filters automatically load a different decoder based on the track, or is that more trouble than it's worth?

[Hendrik]

Nah thats not going to happen.
I could patch the DTS header to force other decoders to think its 24-bit, but that doesn't seem worthwhile either really.

[6233638]

Considering that one of the strengths advertised for Media Center is that it uses 32-bit (or was it 64-bit?) decoders for lossy audio formats such as MP3/AAC, if that's something you are able to do, it might be worthwhile?
 
A lot of people seem to be performing DSP in their video setups (room correction etc.) so getting the highest quality out of the decoder initially seems like a good idea.
 
I suspect that the decoders only output integer, but it might be worth investigating to see whether they would output floating point?

[Hendrik]

floating point doesn't really offer any more precision than 24-bit integer, and some decoders just operate in int, especially for DTS, as the lossless modes all require integer modes.