100%50%0% startend of video time in the video shaded area = % viewed finished 1 2 3 4
  1. 1FlatViewers watch this part from start to finish.
  2. 2Gradual declineViewers lose interest over time; most videos taper.
  3. 3SpikeMore viewers watching, rewatching or sharing this part.
  4. 4DipViewers skip or leave at this moment.

% viewed = shaded area ÷ whole box
Average view duration = % viewed × length
Total watch time = average view duration × views