Find duplicate videos on google drive, dropbox, onedrive, and other clouds 

Use CDF: cloudduplicate...
Tutorial: Removing Duplicate Videos Using Cloud Duplicate Finder
Create an Account:
Visit cloudduplicate... and click on "Create an Account."
Fill out the required details and proceed.
Verify Your Account:
Check your email for the verification mail and click on the verification link.
Sign In:
Return to the main screen and sign in with your newly created account.
Integrate OneDrive:
Click on the OneDrive icon.
Add your OneDrive account by clicking "Add new Drive" and accept permissions.
Add folders to scan and start the duplicate video scanning process.
Find Duplicate Videos in Google Drive:
Similarly, click on the Google Drive icon and add your account.
Add folders and Scan for duplicate videos and delete them as required.
Delete Duplicate Videos from Dropbox:
Click on the Dropbox icon and add your account.
Select folders to scan, wait for the process to complete, and delete duplicates.