anybody know how to encode a multichannel rmvb ?

[adrianmak]

Looking around on the Internet those distributed rmvb ripped by others are all 2 channels stero audio even though the sources are 5.1 surround.

As I knew that modern realaudio support 5.1 multichannel audio

Who have experiences to encode sources to multichannel rmvb format ?


ps I'm not my question is asking in right forum. Please forgive me if I'm wrong.

[Nicholi]

Not rocket science. Sample here.

P.S. Their encoders are CBR only. Real Audio fails it, just don't bother and move on to a better format. Their AAC encoder is no better (I don't think they made it 5.1 capable yet).

[adrianmak]

I can play that multichannel rm and output to my PC 5.1 speakers correctly.

Then if I have a DVD source with AC-3 5.1 surround how do I converting it to rmvb 5.1 multichannel ?

I knew the video part conversion but audio.

Recently I spent sometimes studying on it. I had created a rmvb multichannel. But the 5.1 surrounds outputted not correctly. Followings are what I did.


It is a DVD source and I used DGAINdex to generate a .d2v file

my avs script

#  PLUGINS
LoadPlugin("C:\PROGRA~1\GORDIA~1\DGMPGDec\DGDecode.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\AviSynthPlugins\UnDot.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\AviSynthPlugins\FluxSmooth.dll")
LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\NicAudio.dll")

video=mpeg2source("C:\movie.d2v")
audio=NicAC3Source("movie T02 3_2ch 448Kbps DELAY 0ms.ac3")

video=video.crop(2,0,716,476).LanczosResize(640,480)
final=audiodub(video,audio)
return final

Passed the script to AutoRV10. audio is configured to use RA 5.1 multichannel to encode.
However the rmvb can't output 5.1 surround properly out front left and right speakers have sound on most of the time.

I captured the sound card muxer to see the VU meter differences between playing back the rmvb file and the .AC3 file demux from the DVD source.
http://vip.cyberec.com/~kaichung1/mixer.htm

[Nicholi]

I donno about any auto apps. I used the command-line Helix Producer, and you have to feed it a 6ch WAV file. It just so happens I saved all the cli stuff I did in those tests, so here ya go.

"C:\Encoding\Helix Producer\producer.exe" -i "D:\VOBs\Manhole\Manhole 6ch WAV.wav" -o "D:\VOBs\Manhole\Manhole 6ch RA8 Cook.ra" -arq high -eco high -daw -dv -dt -am voice -ad "Nicholi RA Cook.rpad"

I think I just used a custom rpad file for experimenting weirdosity. There is probably equivalent in one of the default ones that comes with it. Here is what it is:

<?xml version="1.0" encoding="UTF-8"?>
<audience xmlns="http://ns.real.com/tools/audience.2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://ns.real.com/tools/audience.2.0 http://ns.real.com/tools/audience.2.0.xsd">
  <avgBitrate type="uint">350000</avgBitrate>
  <maxBitrate type="uint">700000</maxBitrate>
  <streams>
    <stream xsi:type="audioStream">
      <pluginName type="string">rn-audiocodec-realaudio</pluginName>
      <codecName type="string">cook</codecName>
      <codecFlavor type="uint">32</codecFlavor>
      <encodingComplexity type="string">high</encodingComplexity>
      <encodingType type="string">cbr</encodingType>
      <streamContext type="bag">
        <presentationType type="string">audio-only</presentationType>
        <audioMode type="string">voice</audioMode>
      </streamContext>
    </stream>
    <stream xsi:type="audioStream">
      <pluginName type="string">rn-audiocodec-realaudio</pluginName>
      <codecName type="string">cook</codecName>
      <codecFlavor type="uint">24</codecFlavor>
      <encodingComplexity type="string">high</encodingComplexity>
      <encodingType type="string">cbr</encodingType>
      <streamContext type="bag">
        <presentationType type="string">audio-only</presentationType>
        <audioMode type="string">music</audioMode>
      </streamContext>
    </stream>
  </streams>
</audience>

Just decode the AC3 to a 6ch WAV with BeSweet/azid and your normal parameters.