XVID with AC3 to VCD problem

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by Jay42, Apr 18, 2003.

  1. Jay42

    Jay42 Member

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    I successfully converted an avi that was xvid with ac3 audio to mpg. It played fine on my computer with the correct aspect ratio and with good audio. But when I burned the file to vcd with nero and played it on both my home dvd players, the video was distorted (no more widescreen aspect) and the audio was very choppy.
    Here's the original file specs:
    Frame size: 640x272 23.976 fps
    Decompressor: X-vid mpeg 4
    audio sampling rate 48000 Hz
    channels 5
    compression unknown (tag 2000)
    I extracted the wave with virtualdub, renamed it to audio.ac3, then converted it to wav with headac3he. Then I used Tempgenc to combine. Like I said, it plays fine on the computer but terrible on my home dvd players. Any help is appreciated.
     
  2. Dela

    Dela Administrator Staff Member

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    How long did nero take burning the file?? it is possible that it re-encoded it, since it has done to so many people!
     
  3. Jay42

    Jay42 Member

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    Actually nero complained about the mpg and wanted to re-encode but I chose to burn as is.
     
  4. Dela

    Dela Administrator Staff Member

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    Complained about it, do you know what it said was wrong with the file?
     
  5. Jay42

    Jay42 Member

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    Stream encoding is invalid
    Invalid video stream 30FPS 640X272 pixels
     
  6. Dela

    Dela Administrator Staff Member

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    hmm, when you used tmpgenc, did you use the wizard to make vcd or did you use a template??
     
  7. Jay42

    Jay42 Member

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    I didn't use a template, however I'm trying that now instead of letting tempgenc do its own thing. I'm trying the 352 X 240 29.97fps Video CD NTSC to see what happens.
    I also tried again letting nero reencode the vid. That time the audio was fine, but the aspect ratio was still messed up i.e, the whole movie looked stretched from top to bottom.
     
  8. Dela

    Dela Administrator Staff Member

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    Click setting and click the advanced tab. Change video arrange method to "Full Screen (Kepp Aspect Ratio")".
     
  9. Jay42

    Jay42 Member

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    I assume you mean in tempgenc....ok I'll try that next. Thanks for the help :)
     
  10. Jay42

    Jay42 Member

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    Ok, I finally got it. Here is my own little divx/xvid with ac3 audio to mpg conversion guide. It took several days of trial and error, plus quite a bit of reading on various websites, but my vcd played flawlessly on both my Hitachi and Samsung home DVD players :)

    1. Make sure you have the correct codecs installed. I was having some problems with playback, even though I had installed the latest DIVX codecs as well as nimos codec pack. I uninstalled both and installed the Divxtotalpack and all my tempgenc and windows mediaplayer crashes went away, and I could get perfect audio too.
    2. Use virtualdub to extract the wav in direct stream copy mode. No conversion, just strip the wav and save it. *Also, go to
    File-->File Information and write down the fps (23.976 or 29.976 etc). You'll need that info in step 5.
    3. Rename the wave to audio.ac3
    4. Use headac3he to convert the audio.ac3 back to wav, I went one step further and checked the box to also downsample the audio from 48 to 44100.
    5. Now you can use Tempgenc. If the avi you had a fps of 23.976, use the VideoCD (NTSCFilm).mcf. If your fps was 29.976, use the VideoCD (NTSC).mcf template. For your video stream input, use the original avi, for your audio input, use the wav generated by headac3he, then just choose a dir and filename to save to as mpg. Then you can burn to vcd with Nero without any errors or complaints by Nero about file format. That's it. Total time spent was about an hour for a 700 meg mpg.
     
    Last edited: Apr 19, 2003
  11. Dela

    Dela Administrator Staff Member

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    One thing I will say is you're never supposed to extract the audio!! That just causes too many problems, especially with older computers!
     
  12. Jay42

    Jay42 Member

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    Hmmm all the guides I found on this subject told me to do just that, especially with ac3 audio. Is there a simpler way? I'm opne to anything that will make this even faster.
    And my comp is a P4 2.53 with 1 gig ram.
     
  13. Dela

    Dela Administrator Staff Member

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    Well, if its ac3 then ye you would have to save wav (or more accurately, ac3 with wav headers! and you would use VirtualDUBMOD.). But for any other audio, if you dont have a reason to and are using tmpgenc, ya shouldnt!
     

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