For Web video formats especially, two types of compression are usually applied: spatial (intraframe) and temporal (interframe). Codec compression: Each video codec has its own method of compressing data.If you concentrate the seeds, the yard will be smaller, but the grassy area will be rich. If you spread those seeds over a large area, your yard will be splotchy with large gaps between the blades of grass. For any given bit rate, you have only so many seeds.
You can think of video pixels like an allotment of grass seeds for a yard.
How to compress a video in after effects series#
Most video codecs define each video frame as a series of 16x16 pixel blocks. Whenever possible, you should use a width and height that is a multiple of 16, 8, or 4, in descending order of preference. Your content largely determines how much you can reduce the frame rate without destroying the flow of the clip. Higher frame rates have smoother motion, and lower frame rates can exhibit jerky and unnatural-looking motion. Higher frame rates have a lower bit rate per frame of video, whereas lower frame rates allow more data to be allocated per frame.
However, each video codec can utilize the same bit rate differently.
No matter how you slice it, a clip encoded with a lower bit rate shows less detail compared to the same source clip encoded with a higher bit rate. The video bit rate of a given clip largely determines the visual quality of the video image.
How to compress a video in after effects software#
Video professionals generally agree that a kilobit is 1,000 bits, but not all encoding software calculates kilobits with this measure. Depending on whom you ask, a kilobit equals either 1,024 bits or 1,000 bits.
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