What constitutes a play for billing purposes

The event when a rendered player starts playing a clip or ad preroll. If the player is set to autoplay or first frame this happens on page load, otherwise it will happen when the viewer clicks/taps the play button. Non-autoplaying players with a poster start indisplaystate, which is not charged. If a video is configured with theloopattribute, only the first playback is counted for the charge.