Hide a folder not opening on mobile [Closed]

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Hello,
iam hide a folder in my harddisk...after unhide iam copy those files on my phone...but thaat file only opening on my pc...but not opening my phone..that are video files.. on phone the file got an addiitional extension .PFILE.

Eg:- video.mp4.PFILE..

PLEASE HELP ME TO SOLVE PROBLM...I CANT CHANGE THAT EXTENSION USING RENAME.

LOT OF FILES HAVE THIS PROBLEM..