改路径了啊
"If you're trying to get AVC/h.264 from an AVI into Matroska then the commands you need to use are for example:
avi2raw avc.avi raw.264
mp4box -fps 23.976 -add raw.264 avc.mp4
Keep in mind to replace '-fps 23.976' with the actual frame rate of your source file.
If you really know what you are doing then you can force mkvmerge to put this AVC/h.264 track into a Matroska file even in VfW mode if you add '--engage allow_avc_in_vfw_mode' to the command line. You can do that in mmg with the 'Add command line options' menu entry in the 'Muxing' menu."
啥意思
