NSV File

What are NSV files and how to open them

Are you having problems opening a NSV file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your NSV files.

What is a NSV file?

A .NSV file is a Nullsoft Streaming Video file.

Nullsoft Streaming Video is a streaming media container format created by Nullsoft for use with the Winamp family of software and Shoutcast streaming services. It enables continuous audio - video streams over the Internet, allowing playback to begin before the entire file is downloaded, supporting live streaming and user seeking within the stream. The format is capable of carrying video, audio, subtitles, multiple audio tracks, and descriptive metadata.

This format is typically produced by Winamp or related Nullsoft tools for Internet delivery of multimedia content. Because it is optimized for streaming, NSV files are not usually created for editing or local video production but rather for serving media over networks. Users who obtain NSV files will usually play or convert them using multimedia players that recognize the NSV container format.

Files in this format often begin with the ASCII signature "NSV" at offset zero, which acts as a marker identifying the file as Nullsoft Streaming Video.

How to open NSV files

We have identified two NSV openers that are compatible with this specific type of NSV file.

Programs that open Nullsoft Streaming Video files

Last updated: August 4, 2026

Various apps that use files with this extension

These apps are known to open certain types of NSV files. Remember, different programs may use NSV files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about NSV file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.