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Subtitles in 23.97 fps to 29.97 fps

Discussion in 'Other video questions' started by k0k0m0, Aug 7, 2005.

  1. k0k0m0

    k0k0m0 Regular member

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    I've downloaded several subs from the net which say "NTSC 23.97 fps" (I imagine they're for DivX versions) and I'd like to use them for a DVD which uses 29.97 fps.

    Is it necessary to convert them? If so, how can I convert them so subs are on sync with audio?
     
  2. Minion

    Minion Senior member

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    They should Stay in Sync if you encode the 23.976fps AVI files to DVD Properly.....

    The Proper way is to encode the Files to Mpeg-2 at 23.976fps with 3:2 Pulldown which makes the 23.976fps Files Playback at 29.976fps on your DVD Player.....

    This is How most all Retail DVD"s are Created as all Movies that are Shot on Film are Shot at 23.976fps/24fps and to make the Film Material playback at 29.976fps/30fps to be NTSC Compliant they use a Method called 3:2 Pulldown which is actually inbeded in the Header on the Mpeg-2 file which tells the DVD Player how to playback the Video at 29.976fps....

    If you don"t use this Method when encodeing what the encoder does instead is Duplicate every 4th frame to make up the extra 6 frames per second needed to make up the 29.976fps Frame Rate which will make subtitles go out of Sync because the Timecode is suddenly different and you can get artifacts Like a Jumpy sort of effect caused from watching Duplicate Frames...

    All good Mpeg encoders have the Option in there settings to enable encodeing with 3:2 Pulldown(2:3 Pulldown works also) so if you are useing a Good Quality encoder there should be settings for 3:2 or 2:3 Pulldown...If you tell me what encoder you are useing I can tell you were to find the settings and how to set it up....


    Cheers
     
  3. k0k0m0

    k0k0m0 Regular member

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    Minion,

    these subs are for the movie I had in 23.97 fps and I referred to last night, remember?

    they are in 2 parts, so I have to join them and I was going to use Subtitle workshop for that task, but after that I should be able to import them to DVDLab Pro "as is" with the 23.97 encoded movie and should be fine, right?

    Thnx
     
  4. Minion

    Minion Senior member

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    Yes after you Join the 2 Subtitle Files you should be able to import them into DVD without much problem....
     
  5. k0k0m0

    k0k0m0 Regular member

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    Ok, I'll keep you posted... thanks
     

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