for f in JUL-247-EN-JAVHD-TODAY-0911202101-56-10*; do mv "$f" "20210911_JUL247_EN_JAVHD_01_10min${f##*.}" done
, appears to be a specific file name or database entry associated with adult film content (specifically Japanese Adult Video, or JAV). JUL-247-EN-JAVHD-TODAY-0911202101-56-10 Min