Am 06.05.19 um 11:33 schrieb 黄云尧: > ffmpeg -i CAN131800004_HDM.mp4 -y -c:v libx264 -vcodec h264 CAN131800004_HDM_1.mp4 > i use this commond,it can run ,but the video only have sound frankly, i asked for the whole command output for a damned good reason because nobody including yourself knows how your ffmpeg was compiled at all