The engagement analysis shows for each video when users abort to watch it.
Please note that this analysis must be filtered on one or more videos. You can use the drill down (right click on a video, i.e. in "Video Analytics Summary"), or the filter engine (using the dimension "Media").
If you hover over the graph with your mouse cursor, the number of media views on this position is shown.
If a video URL is passed as media category (with the ID 14), then the video can be played directly in the analysis. Here, you also can find out when users abort to watch.