Files show as 'heic but download as 'heif and don't open

[sargan]

A friend shared a bundle of files with me (all from iPhone)
Videos are fine, and on GoogleDrive I can view all images, and a few of them are identified as .heic format, but when I download to PC they are saved as .heif and I can't open them.

I have the ability to open .heic files (installed CopyTrans) but that does not work for .heif

Anybody have a simple solution, not a format I have come across before.

 

[sargan]

I installed CopyTrans it does not help with hief files only heic
Friend advises he used LivePhoto that must explain the file format.
They view find on Googledrive, but not on PC.