VirtualDub [SEP] license
same effects on a large number of files.
Development.
VirtualDub is free software, released under the GNU General Public License and hosted on SourceForge.net.
VirtualDub was originally created by the author, when a college student, for the purpose of compressing anime videos of "Sailor Moon". It was written to read and write AVI videos, but support for input plug-ins was added, enabling it to read additional formats including MPEG-2, Matroska, Flash Video, Windows Media, QuickTime, MP4 and others.
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The specification is downloadable from the Microsoft website, and the format can be implemented under a license from Microsoft that however does not allow distribution of sources and is not compatible with open source licenses. The author of the free software project VirtualDub reported that a Microsoft employee informed him that his software violated a Microsoft patent regarding ASF playback.
Certain error-correcting techniques related to ASF are patented in the United States (United States Patent 6,041,345 Levi, et al. March 21, 2000) by Microsoft.
See