ffmpeg_YmdHMS
cat -n ffmpeg_YmdHMS
ffmpeg -i IMG_0001.jpg -vf crop=500:500:iw/5:ih/5 -strftime 1 -f image2 %Y-%m-%d-%H-%M-%S.jpg
ffmpeg -i IMG_0001.jpg -vf crop=500:500:iw/5:ih/5 -strftime 1 -f image2 $(date +%Y%m%d)-$(date +%H%M%S).jpg
这里，%Y代表四位年份，%m代表月份，%d代表日，%H代表小时（24小时制），%M代表分钟，%S代表秒。
ffmpeg -i output_170455.jpg -strftime 1 -vf drawtext=fontfile=../msyh.ttf:text='%{localtime}':fontsize=200:fontcolor=#FF0000:x=W-3400:y=H-4550 -f image2 output_170455_%H%M%S.jpg
ffmpeg -i 20250616_mdj.jpg -vf drawbox=50:100:700:205:color=#FF0000:thickness=1.5,crop=800:220:0:90,drawtext=fontfile=msyh.ttf:text=%{localtime}_专升本:fontsize=40:fontcolor=#FFFFFF:borderw=1:bordercolor=#000000 -strftime 1 -f image2 mdj_%Y%m%d-%H%M%S.jpg && rm -rfv 20250616_mdj.jpg
ffmpeg -i not_dust.jpg -vf crop=805:650:50:80,pad=835:680:15:15:color=#FFFFFF,drawbox=15:15:805:650:color=#FF0000:thickness=1,drawtext=fontfile=msyh.ttf:text=%{localtime}-not_dust:fontsize=40:fontcolor=#FFFFFF:borderw=1:bordercolor=#000000:x=W-820:y=H-550 -strftime 1 -f image2 %Y%m%d-not_dust-%H%M%S.jpg
ffmpeg -i not_dust.jpg -vf crop=805:650:50:80,pad=835:680:15:15:color=#FFFFFF,drawbox=15:15:805:650:color=#FF0000:thickness=1,drawtext=fontfile=msyh.ttf:text=%{localtime}-not_dust:fontsize=40:fontcolor=#FFFFFF:borderw=1:bordercolor=#000000:x=W-820:y=H-550 -strftime 1 -f image2 $(date +%Y%m%d)-not_dust-$(date +%H%M%S).jpg