To the uninitiated, squeezing a 2-hour movie into 300 megabytes sounds impossible. A single MP3 song takes up 3-5mb. By that math, a movie should be 3,000mb. The secret lies in aggressive using codecs like H.264 (AVC) or H.265 (HEVC).
Movies come in various sizes, measured in megabytes (MB) or more commonly gigabytes (GB). A 300mb movie is relatively small, which might limit the quality or duration of the movie. Typically, a full-length HD movie can range from 4GB to 10GB or more. 300mb movies 4u top