PAL 25 vs NTSC 30

Discussion in 'Digital Video' started by jwheeler, Mar 2, 2011.

  1. jwheeler macrumors regular

    Joined:
    Jan 14, 2010
    #1
    Hi guys,

    So mostly I'm gunna shoot in PAL at 24fps. But if I want a slight slow down in speed can I not film in 30fps on NTSC and slow down to 24fps (80% speed). Would there be some sort of of compatibility issue between PAL and NTSC.

    Besides whats the big deal with PAL and NTSC. Do we really need worry about it that much?
     
  2. smokescreen76 macrumors member

    Joined:
    Sep 10, 2010
    #2
    For starters there's no such thing as 24fps PAL.

    PAL is a 25 frame per second standard.

    NTSC is a 29.97 frame per second standard.

    Film is usually 24 frame per second.


    You need to know what your final delivery is going to be. If it's for the web then it's not too important which you go with - they're all supported frame rates on computer monitors.

    You run into problems if you are going to end up on DVD or Broadcast Television. Most play PAL and NTSC but not many play 24 fps. What you need to do is either convert it to NTSC using a system called 2:3 pulldown (looks smooth and no problems with audio) or convert it to PAL (trickier - either involves blending frames or speeding up the footage by 4%).

    Whatever you do don't mix frame rates.
     
  3. zblaxberg Guest

    zblaxberg

    Joined:
    Jan 22, 2007
    #3
    PAL and NTSC are used in two very different parts of the world so it depends what continent you plan on using the video as well.
     
  4. jwheeler thread starter macrumors regular

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    Jan 14, 2010
    #4
    I know, I just wanted it to be clear that I was in europe.

    I was planning on doing everything in 24fps. It is for youtube, but I'd like to put it on DVD. How do they put 24fps films on DVD if you can't have 24fps DVDs?
     
  5. LethalWolfe macrumors G3

    LethalWolfe

    Joined:
    Jan 11, 2002
    Location:
    Los Angeles
    #5
    I can't speak for PAL but 24fps is part of the MPEG-2 DVD spec in NTSC regions (the DVD player will add the pulldown on the fly).


    Lethal
     
  6. Nermal Moderator

    Nermal

    Staff Member

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    Dec 7, 2002
    Location:
    New Zealand
    #6
    They often do a 4% speedup.
     
  7. TEG macrumors 604

    TEG

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    Jan 21, 2002
    Location:
    Langley, Washington
    #7
    Your best bet is just recording in HD. While the transmission formats are different, the actual format of the video is the same (720p/24or30fps or 1080p/24or30fps).

    24fps is best for 'real' films, 25 or 30 for TV.

    TEG
     
  8. smokescreen76 macrumors member

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    Sep 10, 2010
    #8
    If you want to end up with a 25fps PAL DVD there is no point in shooting 24fps. None whatsoever. You are just causing yourself problems.
     
  9. jwheeler thread starter macrumors regular

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    Jan 14, 2010
  10. KeithPratt macrumors 6502a

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    Mar 6, 2007
    #10
    Well, you're going to have to invent such a thing then.
     
  11. jwheeler thread starter macrumors regular

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    Jan 14, 2010
    #11
    From what I read, i wont have to. DVDs can be 24fps. DVD players just display them in different ways. (Such as the 4% speed up)
     
  12. smokescreen76 macrumors member

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    Sep 10, 2010
    #12
    A DVD Player will not do the 4% speed up - in PAL mode it will add an extra frame every second (which looks awful) or in NTSC mode it will play with 2:3 pulldown (which looks fine but it will be NTSC).
     
  13. jwheeler thread starter macrumors regular

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    Jan 14, 2010
    #13
    So to put a 24fps movie on a PAL DVD i would convert to 25fps?

    And to put a 24fps on a NTSC DVD I would leave it? or Convert it?

    Obviously BluRay is 24fps...
     
  14. KeithPratt macrumors 6502a

    Joined:
    Mar 6, 2007
    #14
    Yes. You want to conform the 23.976 video to 25, and depending on how you do it, you might need also to speed up and pitch down the audio by 4.096%.

    You can put 23.976fps video on an NTSC DVD and the DVD player will add the necessary 3:2 pulldown.

    Amongst other frame rates, yes.
     
  15. shorafix macrumors member

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    May 15, 2008
    Location:
    Frankfurt, Germany
    #15
    Don't worry and be happy! If you took your footage in 24p and:

    If you intend to go on Blu-ray just stay with 24p

    If you intend to go on PAL DVD (Europe) just go to 25p

    Converting 24 fps to 25 fps is easy - your clip is just being played back a little bit (4%) faster. That's just the way DVDs from film are distributed in Europe: no pulldown and no frames added and nobody complains.
     
  16. jwheeler thread starter macrumors regular

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