1986 Nullsoft Streaming Video Video The Nullsoft Streaming Video (NSV) format is a multimedia container format designed to enable streaming of video and audio. 1 Digital Preservation Department / The National Archives 02 Aug 2018 04/2024 (v.118)- Signature named 'Nullsoft Video with optional header' updated to extend byte range between two strings. Submitted by Preservica. 18 Apr 2024 fmt/1176 PUID nsv File extension 1557 Nullsoft Video with optional header BOF: 'NSVf'{24-16384}'NSVs' (must have minimum 24 byte header but can include variable amount of metadata, Table of Contents) 1 Absolute from BOF 0 0 4E535666{24-16384}4E535673 1558 Nullsoft Video without optional header BOF: 'NSVs' 1 Absolute from BOF 0 0 4E535673 Has priority over 687 MPEG 1/2 Audio Layer 3