You can create projects with source files retrieved via connectors.
Procedure
Log in to your Managed Translation account.
Go to Create a Project.
Fill in the project details and go to the Upload Files area at the bottom of the page.
Click the Select a Connector button.
The box expands, displaying the Active and Inactive connectors.
Select YouTube.
This opens a dialog showing the file listing inside the folder repository.
Select the files you wish to translate. You should select only the source language subtitles.
Videos stored in the main YouTube channel are shown in the Channel folder. YouTube only allows Public videos to be retrieved from this location.
Videos stored in a playlist can be categorized as Private, Public, or Unlisted . If you wish to translate subtitles in non-public videos, add them to a playlist first.
The files are retrieved and added to the upload control.