Исправление chemtech, (текущая версия) :
find -type f \( -iname "*.avi" -o -iname "*.mp4" -o -iname "*.flv" -o -iname "*.mov" -o -iname "*.mkv" -o -iname "*.m4v" -o -iname "*.wmv" -o -iname "*.ts" \) \
-exec ffprobe -i "{}" -show_entries format=duration -v quiet -of csv="p=0" \; | paste -sd+ | bc | awk -v "S=456" '{printf "%dh:%dm:%ds",S/(60*60),S%(60*60)/60,S%60}'
Исходная версия chemtech, :
find -type f \( -iname "*.avi" -o -iname "*.mp4" -o -iname "*.flv" -o -iname "*.mov" -o -iname "*.mkv" -o -iname "*.m4v" -o -iname "*.wmv" -o -iname "*.ts" \) \
-exec ffprobe -i "{}" -show_entries format=duration -v quiet -of csv="p=0" \; | paste -sd+ | bc | awk -v "S=456" '{printf "%dh:%dm:%ds",S/(60*60),S%(60*60)/60,S%60}'