VirtualDub is a video capture/processing utility for
32-bit Windows platforms (95/98/ME/NT4/2000/XP),
licensed under the GNU General Public License (GPL).
It lacks the editing power of a general-purpose editor
such as Adobe Premiere, but is streamlined for fast linear
operations over video.  It has batch-processing capabilities
for processing large numbers of files and can be extended
with third-party video filters.  VirtualDub is mainly geared
toward processing AVI files, although it can read (not write)
MPEG-1 and also handle sets of BMP images.

VirtualDub 是一個免費多媒體剪輯軟體，針對現有的電影短片檔如 .AVI 以及 .MPG 等做編輯的工作
更可內篏字幕及壓縮影片

http://cn.ziddu.com/download/271638/VirtualDub.zip.html