How to get photos and videos off my phone?

My gallery is sorted by date in my phone but when i try to post onto facebook the photos in the gallery are scrambled. When i try to get the photos onto my computer and into a folder they are scrambled again,videos are not recognised and don't show while photos are loading to computer.Yestertday i got a different command while trying to get photos onto computer something about allow MTP,after doing this i found i had to copy and paste into My Pictures and then make a folder instead of Wizard directing me,photos in the folder were not in order they were scrambled still.Videos did appear but are not in sync audio/video.Any ideas,it was same on my S4 too,nice pics but try getting them off the phone. Barry

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