5.1/7.1 dts audio (isolating the streams)

Thranduilion · 15th May 2013, 18:45

Hi! I know that NicAudio has a Downmix2Stereo function, but is there a way to isolate the individual streams instead?

My goal is to (more or less) compress the musical score without compressing the dialogue. I don't expect any of the streams to be purely one or the other, but I'm guessing some of them will emphasize the music over the dialogue.

wonkey_monkey · 15th May 2013, 19:43

I've not used nicaudio with DTS, but I have used it with AC3 and you can call getchannel to select the channels you want. For example (this is just off the top of my head):

Code:

nicac3source("my5.1.ac3")
getchannel(3) # center channel, mono
getchannel(3,3) # center channel, dual mono (for mixing with other stereo sources)
getchannel(1,2) # left/right only

Thranduilion · 16th May 2013, 05:55

It worked beautifully with both 5.1 & 7.1 dts.

tebasuna51 · 16th May 2013, 10:29

Take in mind than NicDtsSource() don't have full support for DTS-HD audio (7.1 must be always DTS-HD), only try (not always work) to decode the 'core' (5.1).

The recommended method to manage DTS-HD is first decode the DTS-HD, with eac3to+ArcSoft, to WAV or W64 and after open the WAV/W64 in AviSynth with RaWavSource().

15th May 2013, 18:45	#1 \| Link
Thranduilion Registered User Join Date: Oct 2011 Posts: 6	5.1/7.1 dts audio (isolating the streams) Hi! I know that NicAudio has a Downmix2Stereo function, but is there a way to isolate the individual streams instead? My goal is to (more or less) compress the musical score without compressing the dialogue. I don't expect any of the streams to be purely one or the other, but I'm guessing some of them will emphasize the music over the dialogue.

15th May 2013, 19:43	#2 \| Link
wonkey_monkey Formerly davidh***** Join Date: Jan 2004 Posts: 2,496	I've not used nicaudio with DTS, but I have used it with AC3 and you can call getchannel to select the channels you want. For example (this is just off the top of my head): Code: nicac3source("my5.1.ac3") getchannel(3) # center channel, mono getchannel(3,3) # center channel, dual mono (for mixing with other stereo sources) getchannel(1,2) # left/right only

16th May 2013, 10:29	#4 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	Take in mind than NicDtsSource() don't have full support for DTS-HD audio (7.1 must be always DTS-HD), only try (not always work) to decode the 'core' (5.1). The recommended method to manage DTS-HD is first decode the DTS-HD, with eac3to+ArcSoft, to WAV or W64 and after open the WAV/W64 in AviSynth with RaWavSource(). __________________ BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 16th May 2013 at 10:39.

16th May 2013, 05:55	#3 \| Link
Thranduilion Registered User Join Date: Oct 2011 Posts: 6	It worked beautifully with both 5.1 & 7.1 dts.