help me with avi-VCD..........

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by ColdFires, Apr 5, 2004.

  1. ColdFires

    ColdFires Member

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    ok....i havent seen this question anywhere else...but there are ones close to it, and i dont have much time so i couldnt look to much....buy anyways right now im converting an episode of naruto from avi to mpeg using TMPGEnc, narutos approx. 20-25 mins and each episode is usually about 200 mb's. in the converting wixard thingy it says 1 episode with a framerate of about 1100 will take up a full 700 mb disk and like 70 mins....is this true? and it wont let me change the framerate....any ideas how to?
     
  2. ColdFires

    ColdFires Member

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    sorry, clicked the button 2 times so it posted 2 times.....
     
  3. Minion

    Minion Senior member

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    Is is NOT the Framerate that determines the File size it is the "Bitrate"..And yes a 700mb 80min CD-R will Only hold about 75 minutes of Video or about 800mb...If you Lower the Bitrate you will also Lower the Quality and VCD quality is allready total Crap the way it is so it would not be a Good I dea to lower it any more and becides the VCD Standard Has a Fixed Bitrate so if you change it then the File will Not be VCD Compliant anymore and your Burning Program Might reject it as Non-Compliant...Most every Movie will have to go on at least 2 CD-r"s and if you can"t handle that then go out and spend the $75 and get a DVD Burner and then you can put a couple movies on each DVD if you wanted....Cheers
     
  4. ColdFires

    ColdFires Member

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    o ya....didnt mean to say framerate! but on there it turned 20 mins into 80 mins, so i stopped it at about 35% because it played the last frame for the rest of the time...and with 35% done the size of it was doubled....
     
  5. FIXIT

    FIXIT Regular member

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    This sounds like your avi has an VBR (variable bitrate)audio stream which tmpgenc cant determine the correct length of, this causes it to play the last frame of the video over and over untill all of the audio has been encoded. to get round this you can convert the audio in virtual dub to an uncompressed wav, the wav can then be loaded into tmpgenc in place of the original avi's audio then you can encode as normal.
     
  6. ColdFires

    ColdFires Member

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    ok thanks, thats probably all ill need....i was getting tempted to get a dvd burner!! lol
     
  7. cw7564

    cw7564 Member

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    Fixit, I have tried your guides which are very well written, but when I extract the sound to a wav file the length is not the same as the avi file. When I then use TMPGEnc the resulting file audio starts in sync and by the end of the file is out of sync. I do not know if this makes a difference but the converted wav file is short than the avi file.
     
  8. FIXIT

    FIXIT Regular member

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    @cw7564
    which guide were you following the avi to vcd guide,
    Instead of extracting the wav file from the avi, you could try rebuilding the avi file with wav audio, do this.
    Open the avi in virtualdub
    on the video tab select DIRECT STREAM COPY
    Audio set to full processing mode
    in audio again set compression to no compression pcm
    for conversion select 44100khz if it isnt allready

    Then go to FILE > SAVE as AVI, name it and hit save

    this should rebuild the whole video file which you can then play and check for synch problems, if the synch is fine then just load it into tmpgenc and away you go.

     
  9. Minion

    Minion Senior member

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    Also if you wish you can PM me with your e-mail address and I can send you a Little Tool that will turn your AVI with VBR Mp3 audio or any compressed audio into an AVI with Uncompressed audio...It seems to work better than Virtual-Dub does sometimes with files that still have a tendancy to go yout of sync after extracting the audio.....Cheers
     
  10. cw7564

    cw7564 Member

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    Fixit, the guide I was following was the AVI to VCD. tried your suggestion, unfortunately this did not work. So far I have managed to get an mp2 file the same length as the avi file using VirtualDubMod. All attempts to convert to a wav end up much shorter!
     
  11. shiroh

    shiroh Guest

    svcd uses mp2. so you may be able to mux it directly.

    if v-dub won't work for you how about other software.
    headac3he is a good transcoding tool.
     

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