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6 channel audio not downmixing to stereo properly HELP!
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s162000
Newbie
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21. April 2009 @ 19:31 _ Link to this message    Send private message to this user   
Ok, i'm a newbie. I came across the DVD to AVC guide here on After Dawn today and have been busy making some nice high quality/low size .mkv's which is something I have wanted to be able to do for a while.

The only problem I have now (last hurdle!) is I can't seem to downmix 6 channel AC3 to stereo using *Nero AAC : NDAAC-HE-64bbps* (i've selected downmix in the config) All I get is muffled background noise on the .mp4 file that is produced. I'm completely stuck, any help greatly appreciated, it is no doubt something simple to rectify.

Here is my log

[Information] Log

-[Information] Versions
--[NoImage] MeGUI Version : 0.3.1.1032
--[NoImage] OS : Windows XP Professional x86 SP2 (5.1.131072.2600)
--[NoImage] Framework used : 2.0 SP1 (2.0.50727.1433)
-[Information] Hardware
--[NoImage] CPU : Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz
-[Information] Log for job1 (audio, VTS_01_1 T80 3_2ch 448Kbps DELAY 3000ms.ac3 -> VTS_01_1 T80 3_2ch 448Kbps DELAY 0ms.mp4)
--[Information] [22/04/2009 00:18:44] Started handling job
--[Information] [22/04/2009 00:18:44] Preprocessing
--[NoImage] Avisynth script
---[NoImage] DirectShowSource("C:\Documents and Settings\Steve\Desktop\SPACEBALLS_SE\VIDEO_TS\VTS_01_1 T80 3_2ch 448Kbps DELAY 3000ms.ac3")
---[NoImage] EnsureVBRMP3Sync()
---[NoImage] DelayAudio(3000.0/1000.0)
---[NoImage] 6<=Audiochannels(last)?x_stereo1c0aeb25d7224c90b0f5c72319857343(ConvertAudioToFloat(last)):last
---[NoImage] Normalize()
---[NoImage] return last
---[NoImage] function x_stereo1c0aeb25d7224c90b0f5c72319857343(clip a)
---[NoImage] {
---[NoImage] fl = GetChannel(a, 1)
---[NoImage] fr = GetChannel(a, 2)
---[NoImage] c = GetChannel(a, 3)
---[NoImage] lfe = GetChannel(a, 4)
---[NoImage] sl = GetChannel(a, 5)
---[NoImage] sr = GetChannel(a, 6)
---[NoImage] l_sl = MixAudio(fl, sl, 0.2929, 0.2929)
---[NoImage] c_lfe = MixAudio(lfe, c, 0.2071, 0.2071)
---[NoImage] r_sr = MixAudio(fr, sr, 0.2929, 0.2929)
---[NoImage] l = MixAudio(l_sl, c_lfe, 1.0, 1.0)
---[NoImage] r = MixAudio(r_sr, c_lfe, 1.0, 1.0)
---[NoImage] return MergeChannels(l, r)
---[NoImage] }
--[NoImage] Commandline used: -ignorelength -he -br 50000 -if - -of "{0}"
--[Information] [22/04/2009 00:18:44] Encoding started
--[Information] [22/04/2009 00:18:44] Encode thread started
--[Information] [22/04/2009 00:18:44] Avisynth script environment opened
--[Information] [22/04/2009 00:18:44] Script loaded
--[Information] Output Decoder
---[NoImage] Channels: 2
---[NoImage] Bits per sample: 16
---[NoImage] Sample rate: 48000
--[NoImage] Commandline: C:\Program Files\megui\neroAacEnc.exe -ignorelength -he -br 50000 -if - -of "C:\Documents and Settings\Steve\Desktop\SPACEBALLS_SE\VIDEO_TS\VTS_01_1 T80 3_2ch 448Kbps DELAY 0ms.mp4"
--[Information] [22/04/2009 00:18:44] Encoder process started
--[NoImage] Output from encoder via stderr
---[NoImage] *************************************************************
---[NoImage] * *
---[NoImage] * Nero AAC Encoder *
---[NoImage] * Copyright 2008 Nero AG *
---[NoImage] * All Rights Reserved Worldwide *
---[NoImage] * *
---[NoImage] * Package build date: Sep 17 2008 *
---[NoImage] * Package version: 1.3.3.0 *
---[NoImage] * *
---[NoImage] * See -help for a complete list of available parameters. *
---[NoImage] * *
---[NoImage] *************************************************************
--[Information] [22/04/2009 00:22:57] Postprocessing
---[Information] Deleting intermediate files
--[Information] [22/04/2009 00:22:57] Job completed

s162000
Newbie
_
21. April 2009 @ 20:38 _ Link to this message    Send private message to this user   
Using BeSweet and BeLight now, problem solved woo hoo off to bed now *yawn*
afterdawn.com > forums > digital video > convert dvd to another format > 6 channel audio not downmixing to stereo properly help!
 

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