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NTSC is it 24 frames or 30 frames per second ?

Discussion in 'Movie Forum' started by FoxyMulder, Feb 20, 2004.

  1. FoxyMulder

    FoxyMulder
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    I have just received Underworld region 3 edition and checked the framerate on my dvd player, when paused its kinda jerky the motion so i checked it carefully and found it to be 30frames per second, i checked my region 2 edition of Tomb Raider it was perfect still frame when paused and runs 24frames per second as does all my region 1 releases all 24 frames per second my question is why ? is this a 3/2 pulldown effect on the region 2 Japanese and region 1 American releases which results in perfect still frames and 24 frames per second and why are region 3 releases such as Underworld 30 frames per second and not 24 ?
     
  2. buns

    buns
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    the 2:3 pulldown is based on 24 progressive frames per second.... so it should read 24 FPS for NTSC. The 2:2 for PAL is also based on 24 so it follows likewise.

    I cant think why 30 would have come up, but a friend suggested that NTSC video may well be interpreted as 30 FPS. This of course doesnt say much for the disc..... what is its source?

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  3. FoxyMulder

    FoxyMulder
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    The disc is i believe from Hong Kong its the Underworld Region 3 single disc edition it looks fabulous and sounds fabulous but is 30frames per second and when paused the frame is jerky.
     
  4. buns

    buns
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    well maybe what i say is wrong. What is your display?

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  5. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    This is one for RichardA:

    I think alot of HK stuff appears to run at 30FPS. It was 30FPS source material that was causing lots of artifacts on a scaler at CES..........NTSC video source material is 60Fields per second/30 frames per second.

    PAL film source is 2:2 but I'd have expected it to read 25FPS
    NTSC film source is from 24 original film frames but runs at 30Frames per second. (That's why the 2:3 sequence is put in, to get 24 up to 30 frames in a second)
    What exactly is it your DVD player is supposed to be measuring?

    Gordon
     
  6. FoxyMulder

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    I just noted that the Japanese and American dvd's seem to run 24fps and have perfect still frames when u pause the film but certain region 3 titles seem to run at 30fps and the still frame is not very good at all and appears jerky and i wondered why this is.
     
  7. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    I would guess it's jerky as it is not doing fde-interlacing of the source material properly or the source material has some artifact encoded in it.

    Gordon
     
  8. cybersoga

    cybersoga
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    UK version looks fine in weave mode (2:2 @ 25fps).
     

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