I had downloaded Gaoranger Ep. 4, Hurricaneger Ep.4, and Abaranger Ep. 3 on MediaFire. I tried to watch them but every one would stop halfway through randomly despite the fact that the videos had been about 20 minutes. I really don't know what to do and I would be glad if you guys would be able to help me fix this.
I suggest you use a Downloader (like JDownloader, MDownloader) instead of relying to your browser's download manager.