Have an institutional government website that I maintain here and bought the fight to get the google analytics and migrate to piwik! However I found a deadlock. I have several videos into HTML5 that are displayed in a playlist, and the User wants to generate reports of how many hits each video have throughout the day!
Noticed that the API is monitoring events such as Play, Pause, and so on.
The issue here is how the player(s) on the page is setup(depends on your system) once that is establish you could have 10 videos on a page and get reports on each and everyone individually or as a group.
To be honest I havent integrated it in piwik myself but in GA it can be setup very succefully and allow you a whole slew of video based analytics.
We now have a Media Analytics plugin that tracks Videos & Audio!
More information is available here: http://www.media-analytics.net/ The plugin gives useful insights into media / video / audio analytics and adds many new reports, widgets and segments to Piwik.
Works with HTML5 video & audio, Vimeo and YouTube out of the box. Support for other players can be added easily and is documented in the developer docs. We are also happy to add support for more players upon request, please ping us. After installation the plugin will in most cases directly start tracking data see the setup guide