Version History of VirtualDub 1.4.12 [features added]
Parts of the MPEG-1 decoder, some color conversion
functions, and parts of the resize filter have been
optimized for SSE2 (Pentium 4).
[bug fixes]
Fixed intermittent deadlock during playback caused
by non-atomic thread synchronization. This affects
SMP systems as well as CPUs with HyperThreading
Technology.
Fixed Save Image Sequence regression in 1.4.11 that
caused the directory portion of the dialog to be
ignored.
Fixed broken copyProc support.
About:
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.
An exciting history of VirtualDub startup can be found here.