As you can see, for each ad break the time is defined to execute specific ad.
For the pre-roll ad time offset value is "start", "0" or you can skip time offset parameter at all.
For mid-roll ad ad time value is either a number of seconds or time value in format hh:mm:ss or hh:mm:ss.mmm or as percentage value (0-100) of the total video content duration. Percentage value cannot be used for the live stream. Live stream duration is infinitive and it is not possible to calculate time position from percentage value.
For the pre-roll ad time offset value must be "end". Of course you cannot use post-roll ads in the live stream. This is not possible to calculate the end time of the live stream.
VAST PRO plugin is a separate product for Nuevo software version minimum 10.0 licence holders. Lifetime license per domain can be ordered upon first order, or any time later in client area. Nuevo software GOLD plan users are entitled to almost 40% discount off the basic price.