Quizz I1.3: Compression

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How much space would take a photo obtained by your smartphone with a sensor 10 million pixels in color if it was not compressed? *

1 point

3 megabytes

30 megabytes

300 megabytes

3 gigabytes

If we compress this image: *

Multiple answers allowed

1 point

it could only weigh 1 kilobyte after compression

It could weigh only 100 kilobytes after compression

it can be about the size you want

it will remain pretty regardless of the compression

she could become ugly

Required

How does the computer know how to uncompress a video? *

Multiple answers allowed

1 point

it only needs to look at the extension of the file (.mov, .avi, .mpg, etc.), this indicates the type of compression of the file.

it looks at the header of the file to understand the type of compression and the characteristics of the video.

it does not know, it just applies a program without knowing what's going on

Required

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