Problem with 7.1 to 5.1 with BeHappy

[RRAH]

Hello,
I want to downmix a 7.1 W64-File (32bit float) to 6 mono Wavs (32bit float) with BeHappy.

As Input I use the following AVS-Script:

# Downmix 7.1 to 5.1
RaWavSource("audio.w64")
fl = Getchannel(1)
fr = Getchannel(2)
fc = Getchannel(3)
lf = Getchannel(4)
bl = Getchannel(5)
br = Getchannel(6)
sl = Getchannel(7)
sr = Getchannel(8)
sul = Mixaudio(sl, bl, 1.0, 1.0)
sur = Mixaudio(sr, br, 1.0, 1.0)
Mergechannels(fl, fr, fc, lf, sul, sur)
Normalize()

BeHappy`s output is set to Wav Split @ Mono wav`s

Problem: The runtime of the output is only about half the runtime of the input.

What`s going wrong?

Thanks

[tebasuna51]

Please inform about AviSynth version and runtimes input and output.

[RRAH]

Please inform about AviSynth version and runtimes input and output.

AviSynth 2.6.0 ST 32-bit

Input: 02:16:24 Output: 01:29:15

[tebasuna51]

Seems a RaWavSource problem reading the w64 header. I need more time to solve the problem.

How do you create the w64 file? Maybe ffmpeg?

Work fine with RaWavSource("audio.wav") obtained with:

WavFix (http://forum.doom9.org/showthread.php?p=1624209#post1624209) audio.w64 audio.wav

EDIT:
To downmix 7.1 to 5.1 I recommend use AudioLimiter (http://forum.doom9.org/showthread.php?p=922027#post922027)

LoadPlugin("X:\your path\AudioLimiter.dll")
...
sul = Mixaudio(sl, bl, 1.0, 1.0).SoftClipperFromAudX(0.0)
sur = Mixaudio(sr, br, 1.0, 1.0).SoftClipperFromAudX(0.0)
Mergechannels(fl, fr, fc, lf, sul, sur)

without Normalize, because the volume of front channels can be reduced by a few peaks in sul-sur channels.
SoftClipperFromAudX only work to avoid clip in surround channels, most the times never or in very short samples.
The rest of channels remain unchanged.

[RRAH]

Thanks Tebasuna,

it works with WavFix and AudioLimiter.

Yes, the file was created with ffmpeg.