I have a GoPro film with extension of.gps and I want to send it in an email. How can I convert it?

I have a GoPro film with extension of.gps and I want to send it in an email. How can I convert it?
Added (1). Can this file type be opened without GoPro Studio or how can I convert it to an mp4 file?
Added (2). (I meant.gcs)

Read more: I have a GoPro film with extension of.gps and I want to send it in an email. How can I convert it?