Detect Live and replace percentsPlayed with smthng like timePlayed

[slovinsky]

— Send timePlayed event in Live mode.
— Configure timePlayedInterval in minutes.

By the way, I used plugin for live and got "Uncaught Error: MediaSource.addSeekableRange() can only be invoked when the duration is Infinity". As far as I understand that it is related to the percentsPlayed event.

[mkhazov]

It's implemented in my fork: https://github.com/neuron-digital/videojs-ga (secondsPlayed event)