We are about to activate a campaign on YouTube and we would like to discuss the best way of measuring success and using the information we get to optimise the campaign in the future.
Engagement in the form of comments, likes/dislikes will give you more of an understanding than looking just at views. Also, if you include a click through on the video (in description) you can measure the click through rate and see how effective your video is at driving traffic to a website or destination. Metrics need to be suitable to the campaign, so would need to know more about the campaign to advise. Happy to discuss if you want to talk further.