The timestamp must refer to an existing frame, it the frame does not exist the most recent or live frame will be shown. Format must be 2014-01-14T21:07:17Z, this is the UTC 8601 format. Get this value from the player share section, while viewing the frame of interest.
Default options for live loop and history playback modes. Control how many frames to show, how fast and the period of time to skip between each frame.