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As already noted in another answer, the answer is compression. But it is actually much more than you might think. A typical video has a huge amount static from frame to frame. Even an "action" vide...
Answer
#1: Initial revision
by
manassehkatz
·
2021-12-26T16:48:10Z (almost 3 years ago)
As already noted in another answer, the answer is **compression**. But it is actually much more than you might think. A typical video has a huge amount static from frame to frame. Even an "action" video (e.g., sports) will actually have only a small part change from frame to frame most of the time. In fact, if this were not the case then a single moderately sized video (e.g., YouTube) playing might require a Gigabit connection to display (e.g., 1280 x 800 x 24-bit color x 30 frames/second = 737 Megabits per second). Keep in mind that the JPEG format itself includes significant compression. If you instead saved those images in the PNG format, you would find the same video taking *many* Gigabytes of storage. (The exact size will depend on resolution, color depth, frames/second and length of video.)