ProRes 422 limitation - no 1920 50i import?

Discussion in 'Digital Video' started by tlindaas, Aug 13, 2008.

  1. tlindaas macrumors newbie

    Joined:
    Mar 15, 2008
    #1
    I'm a newbie, please have mercy...

    On page 9 of Apples' "FCP6 HD and Broadcast Formats" PDF, (http://manuals.info.apple.com/en/FCP6_HD_and_Broadcast_Formats.pdf) the frame dimensions and rates for 1080i video is given. Possible dimensions are 1440 and 1920, as expected, but possible rates are only 25, 29.97 and 30 frames per second. Isn't it strange that the "best" codec don't support 1080 x 1920 in 50 or 60 frames per second? I recently bought a consumer HD camera and it records in 1080x1920, in 50i mode (Canon HF100). One should think that Apples' most expensive software could handle it without downgrading the footage when it is imported.

    I have a suspicion that I could be confused due to not understanding the difference between progressive/interlaced fully, but I'm not sure. Even if 50i is just 25p in disguise, shouldn't it be possible to retain the faster, interlaced video upon import, instead of converting it to 25p?
     
  2. KeithPratt macrumors 6502a

    Joined:
    Mar 6, 2007
    #2
    50i is not 50 frames per second, it's 25. The '50' denotes 50 fields per second. And ProRes has this preset, it's 1080i @ 25fps.
     
  3. tlindaas thread starter macrumors newbie

    Joined:
    Mar 15, 2008
    #3
    So if I use the 25 fps import setting, my footage will actually not be converted to 25 fps progressive, but will remain at 50 fields per second, interlaced?
     

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