is there a code for 29.997 fps ? instead of 23.999 that is...

Discussion in 'DVD / BD-Rebuilder forum' started by sirwalken, Aug 8, 2007.

  1. sirwalken

    sirwalken Member

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    is there a code for 29.997 fps ? instead of 23.999 that is...
    i guess thats it, thanks for any easy help. :)
    it would be good if it was:
    *FPS_29.997
    or something really easy like that in the .ini file :)
    thanks again!
    and thank you
     
  2. vurbal

    vurbal Administrator Staff Member

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    A code to do what?
     
  3. sirwalken

    sirwalken Member

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    unles i'm doing something wrong :)
    bu i think it spits out a 23.97 fps m2v file.
    i don't really know what i'm doing though.
    i'm using he hceenc one i think.
    i don't know if i can use that 23.97 because
    i don't have a european portable dvd player.
    it might work with that regig thing!
     
  4. sirwalken

    sirwalken Member

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    i'm saying the default seems to be 23.97,
    but i'd like 29.97 if it was an easy little bit of code.
    i looked in the rebuild ini and there was a thing
    framerate=1 or something like that.
    it might not even matter though.
    ntsc or pal i guess is what i mean.
    all my dvd players are definitely ntsc.
     
  5. sirwalken

    sirwalken Member

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    i think it even says ntsc on the front
    of my big dvd player.
    i don't know if it matters though.
    at any rate you'de think a 23.97 framerate dvd
    would be less megabytes than a 29.97 dvd.
    but they're the same. thats pretty messed up.
     
  6. sirwalken

    sirwalken Member

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    actually my good dvd player has a divex emblem on
    the front too, so i'm probably ok with the 23.97 fps.
    i think it'll read it, but my portable one, who knows,
    as its a cheap little thing.
    that one reads bitmaps though, like a bastard!
     
  7. Sophocles

    Sophocles Senior member

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    sirwalken

    What you are asking is if a DiVx/Xvid encoded movie will play on a standard DVD player because it is playing at 23.97 frames per second in an environment where DVD standard is 29.97 FPS? You seem to have answered your own question since your player is DiVx compatible.

    I have the feeling that what you have is a downloaded movie which can be easily converted to DVD compliance, and burned to a DVD using VSO's ConvertXtoDVD. If you are just looking for info about 29.97 vs 23.97 then here is a good simple explanation.

    http://www.videohelp.com/forum/archive/framerates-and-converting-to-dvd-t331554.html
    http://www.adobeforums.com/cgi-bin/webx/.3bbc4e84
     
    Last edited: Aug 9, 2007
  8. sirwalken

    sirwalken Member

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    thanks for those links!
    i'll still mess around with dvd rb but i'm doing something wrong.
    i still don't know if they'll play as i've been too lazy to burn a dvd, but i figure if it plays divex, then it'll probably play 23 frames a second maybe. but i guess they're both ncts? 23 and 29 fps?
    my portable dvd player while doesn't have a divex emblem,
    but it also plays jpegs!
     
  9. vurbal

    vurbal Administrator Staff Member

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    When DVD-RB compresses an NTSC disc everything gets encoded at 23.976fps. If the source disc was created from film content, unless it was done wrong to begin with (and some movies are) it would have been encoded at this framerate from the beginning and then had pulldown flags added to change the framerate to 29.97fps. DVD-RB simply removes the pulldown flags, re-encodes, and adds pulldown flags again. This is the only correct way to handle such material.

    Even if the original source was 29.97fps interlaced video (like from a video camera) DVD-RB will encode at 23.976fps, but since framerate is nothing more than a flag in the MPEG header, it gets set correctly when the new VOBs are created. The reason for encoding this way is dealing with hybrid sources. Hybrid sources contain both film and video content. The video is generally used for either beggining/end credits or special effects on television shows. Encoding everything at 23.976fps and adjusting the framerate flags afterward allows DVD-RB to re-encode without converting everything to 29.97fps, which would waste bitrate and lose the original progressive film frames.

    If the final DVD is at 23.976fps that would mean the original is as well, which would mean you don't have a standards compliant disc to begin with.

    You can read this guide for more information about framerates.
     

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