Analog audio upmixing

[david3663 29]

I really like MBT since i swtched over trying to leave media center but i have a problem that leaves me to use external players. My stereo content only plays on my 2 front speakers instead of all of them so the dailogue is really low. I know its not an issue with MBT itself but LAV audio, My question is there any plans to allow the use of ffdshow as an audio codec as it has option to upmix stereo content? I'm sure it would not be hard to maybe add an option to select Analog or Digital in audio settings and if analog is selected use ffdshow.

 

Edit - To add to this it is also possible to use LAV audio to decode and use ffdshow raw for the filters but it does not work with MBT because it doesn't pick up other codecs.

Edited May 12, 2014 by david3663

[david3663 29]

Anybody?

[Luke 42077]

Possibly but if it happens it would be a ways away. it is enough work as it is now just integrating lav and getting it to "just work".

[david3663 29]

Ok thanks while im on the topic i see in the audio settings an option for mixing and it has dolby pro logic etc.. Is this not functional as it seems to make no difference if i select it.

[Luke 42077]

I'm not sure. @@babgvant

[babgvant 143]

Ok thanks while im on the topic i see in the audio settings an option for mixing and it has dolby pro logic etc.. Is this not functional as it seems to make no difference if i select it.

 

That should configure LAV to mix to DPL. I will check to see if it is passing it to LAV properly.

 

Please confirm that you have also selected "Enable PCM Mixing".

Edited May 22, 2014 by babgvant

[hhb97b 11]

That should configure LAV to mix to DPL. I will check to see if it is passing it to LAV properly.

 

Please confirm that you have also selected "Enable PCM Mixing".

 

Hi

 

Is there any news about this, beacuse I believe I'm experience this issue?

 

I have set

 

1. check enable pcm mixing

2 mix encong = dolby pro-logic II

3. mixing layout 5.1

4. mixing setting: clip-protection

5. Audio device = default device

6. audio render = reclock

7. the reciever is running straight, no dsp

8. runnning version 3.0.5744.24672 of mbt

9. filter set = stable

 

My test-clip is a 2 channel() tv station, so it is live tv. in lav control is says that the container is aac(2.0), in 8mc is says that it is 2 channel mpeg. The emby server is transcoding.

 

I also have a video in mp3 2 channel, which doesn't upmix either.

 

What information would you like to have.

Edited October 11, 2015 by hhb97b

[babgvant 143]

What does the AVR report as the channel count & media type?

[hhb97b 11]

Hi

 

Sorry about not checking the avr. The avr is saying pcm and 5.1 channel, so the avr is receiving upmix channel. No sound is coming from the center channel, only left and right, I tought that upmixing would "create" a center channel audio, by combine left and right. Am I misunderstanding the concept?

 

The receiver is a yamaha rx-a1020

 

thanx for you help

Edited October 11, 2015 by hhb97b

[hhb97b 11]

To answer my own question

 

Am I misunderstanding the concept?

 

I have read about lav filter and my research is that lav doesn't upconvert 2.0 -> 5.1 where the different channels are mix together. So I was wrong about expecting audio in the center channel. The system works as it can with the lav audio filter

[babgvant 143]

I think what you want is to output stereo to the AVR then configure it to do All Channel Stereo (or whatever it's called on your AVR).

[hhb97b 11]

Thank your advice