6 channel sound turned to stereo? help

Discussion in 'DVDR' started by rogue212, Dec 4, 2007.

  1. rogue212

    rogue212 Guest

    Hi, i've down loaded a avi file in three 700MB segments which are in 6 channel or 5:1 surround sound off of a file sharing program or network.
    The program has a detail section showing if the files are corrupt etc, and there's a section showing audio compression, but each file has varying audio compession, say one file has 1.6MB of compression, the other will have 3.0MB etc.
    I usually join the files together with VirtaulDub into one file and encode and burn to dvd which keeps the 6 channel sound.
    My confusion is why is the audio compression different for each avi file, i assume that it's caused because a downloaded them through a file sharing network and the audio may have been corrupted.
    So i used VirtaulDub to uncompress the audio thinking this would correct the audio but instead it turns the audio from 6 channel or 5:1 surround sound into stereo with a very high birate.
    The files are obviously larger and play as normal, but why do i lose the 6 channel audio when uncompressing it, is it normal for each segment to have varying audio compression or is this corruption of the audio when downloading.
    Well i guess that's about it and i'm truely sorry for my ignorrance and this big boring post but any help would be much appreciated, thanx.
    P.S. is compressed audio a fault or corruption and if so can i uncompress the audio with VirtualDub and still keep the 6 channel audio and will this have any effect on quailty.
     
  2. Rotary

    Rotary Senior member

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    what program do you use to make dvd files and burn?

    as convertxtodvd, nero, dvd flick etc etc etc all join avi's as its making dvd files and burning...

    no need to join all 3
     
  3. rogue212

    rogue212 Guest

    ConvertXtoDVD and Nero, i use VitualDub to join the files, its not the converting, burning or joining, its when i decompress the audio files with virtualDub before joining them.

    I did this because i sometimes got a warning from VirtualDub when trying to add files for joining that said,

    "AVI Audio was truncated or invalid compressed audio format detected (18 bytes should be 36) attempting to fix"

    i don't get this warning after running the files through the full audio process mode but the files that had 6 channel sound now only have 2 channel, not sure if the VirtualDub warning is anything to worry about though, thanx for reply
     
    Last edited by a moderator: Dec 8, 2007

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