ffmpeg转mp4格式

FFMPEG  -i  uploadfile/video/test.wmv -c:v libx264 -strict -2 uploadfile/mp4/test.mp4
FFMPEG  -i  uploadfile/video/test.wmv -c:v libx264 -strict -2 -s 1280x720 -b 1000k uploadfile/mp4/test.mp4