Nullsoft Video

• Extensions: nsv
• Website: http://www.nullsoft.com/nsv/
• Official Technical Description (mirror): http://multimedia.cx/mirror/NSVFormat.rtf
• Alternate Technical Description: http://multimedia.cx/nsv-format.txt

The Nullsoft Video (NSV) format is a multimedia container format designed to facilitate streaming video and audio via networks. Commonly, the format packages video encoded by On2 codecs such as VP3, VP5, and VP6 while using MP3 and AAC audio.