Note on output for video shot in 1080/60p mode.

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    • #37850
      Avatarroblewis56
      Participant

      Some cameras now shoot at the high frame rate of 60 frames per second progressive (actually 59.94 fps). However, I have found that when you produce your finished product you should set the frame rate at 60 fps (not at 59.94 fps) to sync with 60 Hz line frequency.

    • #167642
      AvatarRob
      Participant

      How did you come to this conclusion? I’m pretty sure that’s not correct.

      There’s a reason why video was first 29.97, although, I’m not sure why. 59.94 is simply twice as fast.

      Also, in general, your output settings should match your footage settings.

    • #167643
      Avatarroblewis56
      Participant

      Rob,

      When I produce a video at 59.94 fps it shows little jumps every second or so. These go away if I produce it at 60 fps. Also, if there are ac powered lights in the video there is some flicker at 59.94 fps not present at 60 fps. My camera is a Panasonic HDC HS700 using the 1080/60p mode and I display the finished MPEG file on a flat screen TV through HDMI.

      Robert

    • #167644
      Avatarroblewis56
      Participant

      Rob,

      Some further comments. The product should be in sync with your display. For example my laptop has a screen refresh rate of 60Hz and my TV is 120Hz.

      Incidentally regarding the significance of the recent availability of 60p camcorders and display devices , Douglas Trumbull, a pioneer of fast-frame-rate techniques, describing his earlier experiments said;

      “When we shot test films at 24, 36, 48, 60, 66, and 72 frames per second we didn’t have words in English that described the phenomenon. We immediately saw a profoundly different kind of experience happening up around 60 frames: The surface of the screen became like a window into reality.”

      Mr. Trumbull will receive a lifetime achievement Oscar this month. (Source: San Francisco Chronicle, February 5-11, 2012, Sunday Datebook p. 23)

      Robert

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