iMovie HD is downgrading the quality of my photos

Discussion in 'Mac Apps and Mac App Store' started by Gherkin, Dec 13, 2006.

  1. Gherkin macrumors 6502

    Joined:
    Apr 9, 2004
    #1
    I'm trying to make a photo slideshow/movie with iMovie HD, and whenever I import the photos, there is a noticeable loss in quality. Is there any way to avoid this?
     
  2. gauchogolfer macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #2
    I've been experiencing the same problem (and in fact started a thread on it long ago...) so I'm interested to see if there are any new ideas.
     
  3. dejo Moderator

    dejo

    Staff Member

    Joined:
    Sep 2, 2004
    Location:
    The Centennial State
    #3
    What video format is your iMovie HD project? HDV 1080i or HDV 720p or only DV? Just guessing.
     
  4. CanadaRAM macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
    #4
    Am I missing something, or isn't HD quality significantly lower resolution/higher lossy compression rates than still photo 2 - 8 Megapixel quality in any case?
     
  5. dejo Moderator

    dejo

    Staff Member

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    #5
    1920 x 1080 is about 2 Megapixel. But it depends on the compression setting, if used, on the digital camera too.
     
  6. Mechcozmo macrumors 603

    Mechcozmo

    Joined:
    Jul 17, 2004
    #6
    1080p has 2,073,600 pixels (~2.1 megapixel)
    720p has 921,600 pixels (~1 megapixel, not even)
    480p (DV/NTSC) has 345,600 pixels (less than .5 megapixels)
    Linkety to a Wikipedia link on common resolutions

    Basically, iMovie is scaling down your photo to make it fit and not take up as much space.
     
  7. LethalWolfe macrumors G3

    LethalWolfe

    Joined:
    Jan 11, 2002
    Location:
    Los Angeles
    #7
    As others have said the loss in quality you are noticing is because the resolution of video formats (w/rare exception) are much lower than the rez of still image formats. For example, in terms of rez standard def video (like DV) is equal to about the lowest quality setting you'll find on most digital still cameras.


    Lethal
     
  8. dejo Moderator

    dejo

    Staff Member

    Joined:
    Sep 2, 2004
    Location:
    The Centennial State
    #8
    Try creating your iMovie project with an HDV 1080i video format (bottom of the Create Project dialog box) and see if you are happier with the resolution. Report back.
     
  9. theBB macrumors 68020

    theBB

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    Jan 3, 2006

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