EOS 5D MARK III, unable to read CTG file

[PicturePlace]

Hello Everyone,
While using my EOS 5D Mark III to cover my daughter's Nurse Pinning Ceremony, I switched to video mode and made some recordings. I have downloaded the files on my MacbookPro and Hp Laptop but unable to read the .CTG file. Please, I need help on how to view my daughter's Pinning ceremony.

Thank you

[kvbarkley]

Do they play in the camera.?

how did you transfer them?