When a new video campaign is launched, we will set and adjust bids manually for the first week or two. This is the fastest way to ramp up a campaign, andit establishes a baseline to compare with results from other types of bidding.
Manual bidding is the best way to force a new campaign to serve on YouTube, so enough data can be accumulated to nurse the campaigns onto automated bidding.
Video campaigns allow Sitelink ad extensions which tend to perform very well so we configure those. We also like the new Lead Form extensions. In a video campaign Google can auto-fill most of the fields.