Many course platforms, CMS media libraries, bug trackers and shared-hosting upload forms stop at 50 MB, enough for a few minutes of decent footage.
At this size you can usually keep 720p for several minutes. Only extremely long recordings will be reduced to 480p or lower. The tool aims for roughly 93 to 95 percent of the limit so the finished file does not tip over it.
Need a different ceiling? Use the related pages for other common upload caps, or the general FileHost.net Video Compressor for manual quality control.