Also, maybe explain the technology behind file size reduction techniques, like codecs, compression. 300MB is quite small for a movie; typical HD files are much larger. So maybe it's a low-resolution version. That's worth mentioning in terms of quality loss.
A 300MB movie is not a "small HD movie." It is a heavily degraded version suitable only for casual viewing on a tiny screen. It is the cinematic equivalent of reading a novel in 6-point font that is missing every third page. 9xmovies4u 300mb UPD
: Besides legal issues, visiting such sites can expose users to malware, viruses, and other cybersecurity threats. The sites might bundle their downloads with malicious software or use ads that lead to phishing sites. Also, maybe explain the technology behind file size