Your students shot a video and now you want them to share it with you. They can't email it to you because the file is just too large. The solution is simple, just upload it to Google Drive.
Open the video file on the phone.
Click the share icon.
Find and click the Drive icon.
Name the file.
It will take a few minutes to fully upload the file.
Find the uploaded video in the Uploads section.
Click the ice cream cone icon. (three little dots)
Click Add people.
Add the email addresses of those you want to share the video with.