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  • Panasonic Cameras

    Frame Rate Discrepencies between HVX and FCP Settings

    Posted by Andy O’neil on March 4, 2006 at 2:19 am

    Hi,

    Shooting on the HVX200
    Recording Setup: 720p24PN

    Editing on FCP 5.0.4
    Sequence Settings:
    Frame Size: 960 x 720
    Aspect Ratio: DVCPRO HD 720p60 (16:9)
    Pixel Aspect Ratio: DVCPRO HD 720p60
    Editing Timebase: 23.98
    QuickTime Video Settings:
    Compressor: DVCPRO HD 720p60

    Why are there FRAME RATE discrepancies between:
    (a) the RECORDING SETUP of the HVX-200 (24PN) and
    (b) the SEQUENCE SETTINGS: ASPECT RATIO, PIXEL ASPECT RATIO, and COMPRESSOR (60)?

    Maybe I’m lacking a fundamental understanding. I guess I don’t know why the Aspect Ratio, Pixel Aspect Ratio, and Compressor are all set at 720p60 (60 being the number in question). I’m assuming the 60 refers to frames per second.

    If so, why wouldn’t it say 720p23.98 or at least 720p24 since I’m shooting 720p24PN?

    Does this make sense?

    I’d appreciate any clarification.

    Thanks,

    Andy O’Neil
    Asheville, NC
    Video Editor

    Anders Holck replied 20 years, 2 months ago 2 Members · 1 Reply
  • 1 Reply

  • Anders Holck

    March 4, 2006 at 2:58 am

    Final Cut Pro (and Quicktime) has five DVCPRO codecs:

    DVCPRO
    DVCPRO 50
    DVCPRO HD 720p60
    DVCPRO HD 1080i60
    DVCPRO HD 1080i50

    The DVCPRO HD 720p60 codec is used for all 720p material, 720p24, 720p30, 720p60 and so on.

    What you see from the sequence settings is that the sequence uses the DVCPRO HD 720p60 codec, and has the 960×720 dimension but represents a 1280×720 picture as the DVCPRO HD 720p60 codec dictates.

    The 720p24PN is reflected in the Editing timebase as this shows at what FPS the sequence is based.

    When the HVX records in 24p it’s actually recording at 23.975, and that’s what FCP reports.

    This Codec could be called DVCPRO HD 720p instead, but maybe Apple is clearing the way for a DVCPRO HD 720p50 codec.

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