This is the file size. For a 720p file, 300MB suggests a "highly compressed" version (often using x265/HEVC encoding) to save data while maintaining decent quality.
These are "tags" added by the specific group or website that uploaded or encoded this version of the file. Where to Watch Officially This is the file size
This indicates the vertical resolution of the video (High Definition). Where to Watch Officially This indicates the vertical
This stands for "HD Rip," meaning the video was encoded from a high-definition source, usually a digital stream. Ullu Website: Accessible via desktop browsers
To ensure the best video quality, security, and to support the creators, it is recommended to watch the series through official channels: Available on Android and iOS. Ullu Website: Accessible via desktop browsers.
If you are looking at a file named gaachi-part-1-2022-s01-hindi-ullu-originals-www-7starhd-social-720p-hdrip-300mb-1.mkv , here is what those tags mean: