Ok so I assume since I am recording this cam 24/7 that it will be the file size of the max allowed before it splits them.It is also worth noting that UI3 can only download clips exactly as they exist as files on your server. It can't convert to mp4 or export just a single alert from a clip that contains more than one alert.
So if you download an alert what you actually get is the clip that contains it.
Now I know. Thanks!