ffmpeg指定in-out點轉檔(-ss,-t)

ffmpeg -i unnamed-002-C001.avi -t 00:03:08 -target ntsc-dvd unnamed-002-C001.mpg
ffmpeg -i unnamed2-001.vob -ss 00:02:51 -t 00:02:20 -target ntsc-dvd unnamed2-001.mpg