If you don't want to pay for the extra hit volume that will be sent due to the use of Adobe Media Analytics, you can consider sending some basic video playback usage data to regular Adobe Analytics.
Specifically for video played time, you can setup a Numeric-type success event, then track the played seconds to that success event whenever the user presses "Pause". In Adobe Analytics, you can then report on the played seconds in a similar manner as reporting other success events, i.e. you can break it down by other eVars. As usual, Adobe Analytics will report the sum, so you'd be reporting the total video played time. If you want the average, you can use a Calculated Metric to achieve that.
If you want to see the video played time success event in HH:MM:SS format, create a Calculated Metric, include your video played time success event as the only metric, and format the Calculated Metric as "Time".