The vertical resolution (1920x1080 pixels), indicating high definition.
For movies dubbed in regional languages (like Bengali), official BluRays rarely exist. The only way to get a high-definition version is to rip it from a streaming platform (Netflix, Hoichoi, ZEE5). That is why files tagged 1080p.WEB-DL.Bengali are so common on torrent indexes.
Indicates vertical resolution of 1080 pixels. This is Full HD, offering high image quality. 1080p requires more bandwidth/storage than 720p or 480p.
The mention of x264 highlights a balance between file size and video quality. Even in an era moving toward x265 (HEVC), x264 remains the most universally compatible video codec for older computers, smart TVs, and mobile devices.