I wrote this stupid toy using the YouTube API. Basically it just starts multiple copies of a video at different randomized times. That worked great for like a year. But toda
The start parameter still works. The problem is, that you compute a wrong value for it: wrong type. Maybe it has been changed: Supplying a valid INTEGER value works. (If fractions are allowed, then not all are valid.)
For example, if you want a value between 0 and 200 then use:
var maxVal = 200;
var startVal = Math.ceil((Math.random() * maxVal));