sorry I didn't give a better answer.
Sorry I didn't give a better answer.
You did not say what file type, or apparently I didn't see that. A common file type use for editing movies is the AVI file type. If your video is that type, then you can find utilities that will cut that type of file into smaller pieces. This is often needed for doing anything to very large files.
Here is one website that explains this in some more detail.
https://filmora.wondershare.com/video-editor/avi-splitter.htmlI hope that is of some help.