This script renders a project is segments the length of which is specified on the following line of code:
var renderLength = new Timecode(4000 * 60); // 4 minutes
// 1000 ms = 1 second so 4000 ms = 4 seconds so 4000 * 60 = 4 minutes.
// (or 1000 * 60 = 1 minute * 4 = 4 minutes)
// 00:04:00:00 could also be used to indicate 4 minutes
The render location is specified:
var defaultBasePath = "D:\\renders\\";