YouTube has now turned on post-roll ads or ads that appear at the conclusion of a clip by default on all monetized videos that are longer than 10 minutes. The change was noted by Search Engine Journal and in a recent Creator Insider video (below). Of course, creators who are eligible for monetization can choose to serve any combination of pre-roll, mid-roll, or post-roll ads when a video is longer than 10 minutes. (In July, YouTube actually lowered the video length threshold for mid-roll ad eligibility from 10 minutes to eight minutes). And now, all three formats are turned on by default. Search Engine Journal notes that post-rolls which can run from 12 seconds to three minutes in length can be turned off during the upload flow on future videos, or on existing videos within the monetization tab. Creators can also choose to switch off pre-roll and mid-roll ads by default. YouTube has now turned on post-roll ads or ads that appear at the conclusion of a clip by default on