: It is based on the "ISO base media file format" and uses a series of "atoms" or "boxes" (like ftyp , moov , and mdat ) to organize data.
: It typically utilizes the H.264 or H.265 codec for video, which allows for high quality at relatively small file sizes. b5_148.mp4
The file appears to be a specific multimedia container following the MPEG-4 Part 14 (MP4) standard. Based on standard file-naming conventions, "b5_148" likely refers to an internal project ID, batch number, or specific metadata tag rather than a widely known public viral video or standard software component. Technical Overview of the .mp4 Format : It is based on the "ISO base