utc; ffmpeg -hide_banner -i Nanikeidemonai_Dance_Collection-Brystal_Bales-20130710-youtube-854x480-7aBONwGm20o.mp4 -ss 00:01:21.949 -to 00:01:50.979 【NANIKEIDEMONAI】何系でもない【NARUTO】.7aBONwGm20o.1.mp4 -y; utc # 00:01:21.949=true to 00:01:50.979=true