Question: What is a prerequisite to using SFTP or the Aspera Dropbox delivery method?
- Maintain a subscriber count above 100,000.
- Deliver videos in HD resolution.
- Upload more than 100 videos per month.
- Provide an SSH Key to your account manager.
Explanation
SFTP and Aspera Dropbox are delivery methods used for bulk content delivery to YouTube systems. An SSH key is required because it authenticates access to the secure delivery endpoint. Providing the key to the account manager allows the delivery setup to be associated with the correct partner account. Without this authentication step, the delivery method cannot be enabled for the account.
Why the other options are incorrect
Subscriber count is not a technical requirement for secure file delivery setup.
HD resolution affects video quality but does not authorize access to delivery endpoints.
Monthly upload volume does not replace the authentication requirement for SFTP or Aspera Dropbox.
Source for verification
https://support.google.com/youtube/answer/3070500
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