guardian/frontend — pull request #5523 by rich-nguyen (2014-08-12 15:17:05+00:00)
Title: Move preroll request event to advert plugin init

This moves the 'preroll:request' event closer to the start of advert initialisation. It is expected that this will increase the number of preroll:request events observed, close to the number of 'video:request' events.

A small discrepancy is expected due to natural decay of delayed events, noise, and a small fraction of blocked video adverts.