Video Dimensions Question - Output to Tape

Discussion in 'Amateur Video Production' started by Tom, Sep 4, 2003.

  1. Tom

    Tom Guest

    Alright, I know this is a lame question, but I can't figure something out.

    I developed a music video in After Effects, 720x486. Imported MiniDV clips
    into AE captured in Avid DV. Clips are 720x486.

    Now I export an uncompressed movie, 720x486. Dump it back to MiniDV tape
    (the camera), and it appears to all be there on the camera's monitor.

    Patch the camera into the TV, and I'm cropping left and right. So TV's
    display at 640x480? Is that right?

    I have to submit a MiniDV tape here soon, for the final product. How can I
    ensure it won't get cropped when it's played back?

    Is there a point when the MiniDV tape gets squeezed into a 640x480 format?

    Tom, Sep 4, 2003
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  2. Tom

    Samuel Paik Guest

    No. TV's show some part of the center of the video image, and the rest
    are off the edges of the visible part of the screen. This is called
    overscan. If you look, you'll probably see your TV is also cropping
    some part of the top and bottom too.

    TVs vary in the amount of overscan (TVs also tend to have less overscan
    as they age). Some TVs allow the user to adjust the amount of overscan.
    In any case, TVs vary. So it is a bad idea to have important things
    happening near the edge of the video.

    This leads to the "Safe Action Area" and "Safe Title Area". It is
    recommended to keep all interesting action in the middle 90% (5%
    borders), the safe action area. And very important things (e.g. titles)
    are recommended to be in the middle 80% (10% borders)

    Samuel Paik, Sep 5, 2003
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