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AVI with AC3

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NautTboy
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Joined: 24 Mar 2005

Post Posted: Jun 26, 2009 09:24 Posts Comp View users profile Send private message Reply with quote

I have AVI (divx, mp4) with AC3(5.1)
When played on PC, shouldn't it play just 2 channels?
I went into the player options and chose just 2 channels but don't hear the speech channel, just background and music. I haven't tried it on my stand alone dvd/dvix player yet to rule out the AVI itself.
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jagabo
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Joined: 09 Dec 2005
Location: none

Post Posted: Jun 26, 2009 10:36 Posts Comp View users profile Send private message Reply with quote

Assuming you have only two speakers on your computer...

Check the speaker setup. Make sure it is set to 2 channel stereo.

Check the AC3 5.1 downmix settings. Make sure it's also set to 2 channel stereo. You didn't say what player you were using but here's the MPCHC config dialog for downmixing AC3, DTS, and AAC as an example:



NautTboy
Member


Joined: 24 Mar 2005

Post Posted: Jun 26, 2009 21:18 Posts Comp View users profile Send private message Reply with quote

Yea, that's what i'm using MPC, but doesn't look like that. I will have to double check.
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poisondeathray
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Joined: 07 Sep 2007
Location: Canada

Post Posted: Jun 26, 2009 21:21 Posts View users profile Send private message Reply with quote

jagabo's example is for mpchc not mpc

if you are using mpc, you may have to do the downmix in ac3filter, or ffdshow depending on what you are using to decode ac3


jagabo
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Joined: 09 Dec 2005
Location: none

Post Posted: Jun 26, 2009 21:34 Posts Comp View users profile Send private message Reply with quote

Yes, MPC doesn't have a built in AC3 decoder. So you will have to change the settings in whatever DirectShow AC3 decoder you are using.

NautTboy
Member


Joined: 24 Mar 2005

Post Posted: Jun 29, 2009 20:51 Posts Comp View users profile Send private message Reply with quote

Ahhhh, i didn't read carefully. I didn't know there's a different. I'd assumed MPCHC was just a full term and MPC for short. Well thank you all.
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