Why am I asked to render my audio (the video part plays fine)

Discussion in 'Digital Video' started by cstarr, Sep 5, 2007.

  1. cstarr macrumors newbie

    Sep 5, 2007
    Why am I asked to render my audio (the video plays fine) when my sequence settings look like they match my source media?
    is there something I am overlooking?

    I have loads of material to look through, so I can't give up on this question, render it all and nest it in sequences or something.

    Source (captured with iMovie)

    Format: DV - PAL 720 x 576 (768 x 576) DV, Stereo, 48.000 kHz 25fps

    FCP sequence settings:

    Audio: 2 Outputs
    Frame Size: 720 x 576
    Vid Rate: 25 fps
    Compressor: DV-PAL
    Aud Rate: 48.0 kHz
    Aud Format: 32-bit floating point
    Pixel Aspect: PAL-CCIR 601
    Field Dominance: Lower (Even)

    Does anyone have any ideas? Please?
  2. Schtumple macrumors 601


    Jun 13, 2007
    Simply, it's because you captured it on iMovie, it creates the video (and audio with it) with a different codec/format (something along those lines), which Final Cut isn't optimized for (again, something along those lines).

    I found this out after importing 9 hours of footage on iMovie, then having to render it all on final cut to edit it.
  3. cstarr thread starter macrumors newbie

    Sep 5, 2007
    Thanks for replying,
    and that may be the answer, but the odd thing is that the video plays fine without rendering, and the source file, even though captured in iMovie, is still a standard quicktime DV file no matter how I examine it.

    also on a possibly unrelated note, does anyone know why it says I have a 32 bit floating point (in my sequence settings I selected 16 bit audio)?

    the plot thickens...
  4. LethalWolfe macrumors G3


    Jan 11, 2002
    Los Angeles
    IIRC, 32 bit floating point refers to effects processing precision.


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