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Creating Motion Graphics with After Effects, 5th Edition by Trish Meyer, Chris Meyer

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41 Video Issues

An overview of all those pesky technical issues you need to keep straight when you’re working with video

Just because we can edit and create video content on our computers doesn’t mean video is like any other computer artwork. There are a number of nonintuitive technical issues – including interlaced fields, frame rates, frame sizes, pixel aspect ratios, safe image areas, and color spaces – that differentiate video and that must be handled properly to ensure your final work appears on television as you intended. We will give an overview of these topics here.

Fields and Interlaced Frames

Much video employs a trick in which each frame of the image contains visual information from two different points in time. The two subimages that ...

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