these are "tags" or signatures left by the original uploaders or the website (Bolly4u) that processed the file. In the digital world, these act like watermarks to denote the source of the encode.
The "720p Portable" format has become the gold standard for mobile viewers for several reasons: fromtvs01bolly4uorg webdl dual audio 720 portable
This is a specific encoding optimization. A "portable" or "HEVC/x265" version is compressed using advanced codecs to ensure the file size is very small (often under 500MB) without a significant loss in visual quality. This makes it ideal for viewing on smartphones, tablets, or devices with limited storage. Why Is This Format Popular? these are "tags" or signatures left by the