Quick question about file sizes

Discussion in 'Mac Basics and Help' started by Slappi, Apr 19, 2015.

  1. Slappi macrumors member

    Jan 31, 2010
    I was moving my apple photo photos and movie to a usb flash drive today and the files are noticeably smaller. For an example.... A 500mb video transfers to the flash drive as 150mb. All the photos and videos did the same thing.

    Why is this happening? Is the quality being downgraded?

  2. hallux macrumors 68030


    Apr 25, 2012
    Are you exporting the files or are you copying them using Finder?

    If you're exporting them, the export process is likely compressing them as well.

Share This Page