Xf066_bts_ts-(13-11-2021)-720p-tag17fts.mp4 ... -

: BTS often has specific content released for Japanese audiences (like CDTV or Music Station ) around these dates.

: It handles "TS" (Transport Stream) encoded mp4s better than default system players. XF066_BTS_TS-(13-11-2021)-720p-tAG17FTS.mp4 ...

: Stands for Transport Stream , indicating this was likely captured directly from a high-definition broadcast. : BTS often has specific content released for