VideoHelp Forum




+ Reply to Thread
Results 1 to 8 of 8
  1. 22nd Jan 2005 19:18 #1
    Intuit
    Intuit is offline
    Member
    Join Date
    Feb 2004
    Search Comp PM
    I am trying to graduate from AC3 to 5.1 dolby digital. I have an xvid avi that I ran through gspot and gspot told me the audio is 5 ch. Anyone know how to make my dvd+r end up being 5 ch? I usually convert avi audio to Ac3 with ffmpeg or besweet, but I ffmpeg won't convert to 5.1 and besweet is not recognizing the avi. VDub won't do anything with the file either no will vdub mod... any have any ideas on how to utilize my 5.1 source xvid audio?
    Quote Quote  
  2. 23rd Jan 2005 01:51 #2
    celtic_druid
    celtic_druid is offline
    Member
    Join Date
    Dec 2004
    Location
    Australia
    Search Comp PM
    If you already have 5.1 AC3 and you want 5.1 AC3 then you really shouldn't be re-encoding.

    ffmpeg as far as I know supports 5.1, just use -ac 6.

    If it is an avi then VirtualDubMod should recognise it fine, even if you are missing the video codec.
    Quote Quote  
  3. 23rd Jan 2005 05:22 #3
    jimmalenko
    jimmalenko is offline
    VH Veteran jimmalenko's Avatar
    Join Date
    Aug 2003
    Location
    Down under
    Search PM
    5.1 dolby digital is 6 channel AC3 - same thing. So there's no need to do anything to the audio bar extracting it from the AVI, which Virtualdubmod > streams > stream list > demux should be able to handle for you. Then convert video only, and let your authoring software mux your AC3 audio with your video. Job done.
    If in doubt, Google it.
    Quote Quote  
  4. 23rd Jan 2005 17:01 #4
    monzie
    monzie is offline
    Member monzie's Avatar
    Join Date
    Nov 2003
    Location
    The Village
    Search Comp PM
    Bang on the money Jim...(and if your dvd authorer refuses the AC3 run it through AC3fix)..and as said above job done.

    AFAIK ffmpeg (ffmeggui) DOES NOT support 5.1 (it deals with 2 chanel INPUT sources and outputs 2 chanel AC3..or mp2)
    Quote Quote  
  5. 23rd Jan 2005 21:09 #5
    celtic_druid
    celtic_druid is offline
    Member
    Join Date
    Dec 2004
    Location
    Australia
    Search Comp PM
    I didn't say ffmpeggui, I said ffmpeg which does do 5.1. Also the GUI I believe works with more than 2 channel sources, just only 2 channel output.
    Quote Quote  
  6. 26th Feb 2005 14:20 #6
    Intuit
    Intuit is offline
    Member
    Join Date
    Feb 2004
    Search Comp PM
    Are there any other programs? I am unable to figure out FFMPEG without the GUI...I'm cpu illiterate
    Quote Quote  
  7. 26th Feb 2005 14:23 #7
    Intuit
    Intuit is offline
    Member
    Join Date
    Feb 2004
    Search Comp PM
    Originally Posted by jimmalenko
    5.1 dolby digital is 6 channel AC3 - same thing. So there's no need to do anything to the audio bar extracting it from the AVI, which Virtualdubmod > streams > stream list > demux should be able to handle for you. Then convert video only, and let your authoring software mux your AC3 audio with your video. Job done.

    So will this create a huge audio file?
    Quote Quote  
  8. 26th Feb 2005 15:30 #8
    jimmalenko
    jimmalenko is offline
    VH Veteran jimmalenko's Avatar
    Join Date
    Aug 2003
    Location
    Down under
    Search PM
    Originally Posted by Intuit
    So will this create a huge audio file?
    The file should be roughly 300-400MB for most movies.
    If in doubt, Google it.
    Quote Quote  



Similar Threads

« Previous Thread | Next Thread »
Visit our sponsor! Try DVDFab and backup Blu-rays!