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Level 1

9 points

When I download a movie purchased in iTunes and save it on an external hard drive, the file size changes, why?

I am purchasing movies from iTunes on a PC running Windows 10. I have heard that occasionally a studio will remove a movie from he iTunes store, thus making it no longer available. It was suggested that I backup my movie library to an external hard drive. When I download the movie and copy it to external hard drive, I have noticed the file sizes changes, it seem to get smaller. Any ideas on why this is happening?

Windows 10

Posted on Oct 6, 2018 2:42 PM

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turingtest2

Level 10

272,871 points

Posted on Oct 7, 2018 6:37 AM

See https://en.wikipedia.org/wiki/File_size. One system might be giving sizes expressed in base-2 kilo-, mega-, and giga-bytes while the other gives it in decimal based variants. The former uses a slightly larger unit size, so will display the smaller values.

tt2

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When I download a movie purchased in iTunes and save it on an external hard drive, the file size changes, why?

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