Failed to open and play a file type with .nsv extension? NSV file is actually an old media format, which doesn't seem to be compatible with most modern devices and applications. No biggie, this post will guide you through how to convert NSV to MP4 or any other playable format for hassle-free playback. Read on to rescue a bunch of your memorable NSV videos.

This freeware can work as either an NSV file player or an NSV to MP4 converter, install it here:

Kevincy Kevincy | Updated on Apr 3, 2024
Quick Navigation: 3 Simple Ways to Play and Convert NSV to MP4

Method 1: Open and Play NSV Files with Winamp

NSV (a.k.a. Nullsoft Streaming Video) is a digital container format developed by Nullsoft, Inc. to stream video content over the Internet. As you may know, the legendary media player - Winamp is also originally developed by Nullsoft. So Winamp is inherently capable of NSV video playback.

Step 1. Download and install the latest version of Winamp from

Step 2. Once the installation is complete, it should automatically set up the file extension association with NSV file. And you're able to open NSV file directly. If not, run Winamp, click "+Add" button to import all your NSV files.

How to Open NSV Files

Step 3. Double-click one file in the playlist to play NSV videos in regular sequence.

Note: I didn't find an MP4 output plugin that allows you to convert NSV to MP4 in Winamp. To do that, just keep reading, I've already got you covered.

NSV Player

Method 2: Play and Convert NSV to MP4 with Free HD Video Converter Factory

Free HD Video Converter Factory is a functional yet free video and audio processor that enables you to not only play NSV files with a built-in player but also convert NSV to MP4, AVI, MKV, and any mainstream video format with several simple mouse-clicks.

Download and installDownload and install this free NSV file converter below and stay close to the steps below.

Free Convert NSV Files to MP4, MKV and More
Free HD Video Converter Factory
No complicated operation, Free HD Video Converter Factory will facilitate the conversion process in a flash.
  • Play and Convert NSV Files to MP4 with ease.
  • 500+ optimized presets available for 1-click conversion.
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  • Remove and add subtitles from/to video.
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Step 1. Launch Free HD Video Converter Factory and open "Converter".

Step 2. Click "Add Files" button to import NSV files, or just drag and drop them into the program.

Step 3. Click on the preview window on the left side to play NSV video with a built-in player.

NSV to MP4 Converter

Step 4. Press format profile on the right side to select "MP4" under the "Video" category. If needed, 500+ presets are available for your choice.

Step 5. Specify an output folder on the bottom and click the big "Run" button to convert NSV to MP4.

Also Read: DAT File Player | DAV File Player | VTS Video Player | VR Video Player

Convert NSV to MP4

Method 3: Play and Convert NSV to MP4 with VLC Media Player

Also, some modern 3rd-party media players can play NSV videos, such as VLC, MPC-HC, KMPlayer, etc. Here I'll recommend VLC, not only does it open and play NSV files, but also it allows you to convert NSV to MP4, MP3, and other formats. Let's see how it works.

Step 1. Install or update VLC to the latest version from

Step 2. Run VLC, simple drag and drop a .nsv file into the player window to play back NSV video.

Play NSV Files

Step 3. To convert NSV file to MP4 format, click "Media" button on top menu bar, then choose "Convert/Save" option.

Step 4. On the new dialog box, click "Add" button under "File" tab and load your NSV file. Click "Convert/Save" button to proceed.

What Is NSV File

Step 5. Select "Video - H.264 + MP3 (MP4)" option in the drop-down of "Profile" section.

Step 6. Click "Browse" button to specify a destination to save the converted video.

Step 7. Press "Start" button to convert NSV to MP4.

Related Posts: Play DAV in VLC | Play ISO in VLC | Stream IPTV in VLC | Play and Convert WebM in VLC

NSV Converter

Free Video & Audio Processing Tool

NSV file is definitely an uncommon format that most program may fail to open and process it. Free HD Video Converter Factory is a solid program dedicated to solving any video and audio format incompatibility. It supports importing NSV file and converting to MP4, MKV, AVI and more mainstream formats. Apart from that, it even allows you to download video & audio from YouTube and 500+ pop sites. Sounds great? Why not download and give it a try!

Video Tutorial - How to Play and Convert NSV File?

Final Words...

That's all about how to open, play and convert NSV files? Hope I make everything clear and straightforward. If the above methods cannot resolve your problem, feel free to drop me a line via Facebook Messenger, I'm glad to help you. Thanks for reading!

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