Get channel details (including the Uploads Playlist ID - required to get all the videos for a channel) for a list of Channel IDs. If you only know the username and need to convert that into a Channel ID, please see the YouTube Users Endpoint.
Import this formula to add the workflow into your account. Enter the channel IDs you need the details of, then enter your YouTube API key and hit execute. You’ll get the combined results back in a CSV file.