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Play a NKI video online, free

Play and convert .NKI files online. Watch video, inspect tracks and convert to MP4, WEBM or MP3, free.

Drop your .NKI file here

Opens your .NKI file right here.

Choose file
Inspect up to 4 GB · convert up to ~500 MB
Instant. Opens in seconds
Real FFmpeg compiled to WebAssembly
100% free. No watermarks
Engines load only when needed: MediaInfo (2.4 MB) to inspect, FFmpeg (32 MB, cached after first use) to convert.

How to convert a .NKI file online

Three steps, all tab.

01

Open your file

Drop your .NKI file and every video, audio and subtitle track inside is listed with its codec, resolution, frame rate and language.

02

Preview

See frames from across your .NKI file before you convert, even when your browser can't play the codec inside.

03

Convert

Pick MP4, WEBM or MP3, or repack to MKV without re-encoding. Play the result right here, then download it.

What is a .NKI file?

Everything worth knowing about Native Instruments KONTAKT Instrument.

An NKI file is a KONTAKT instrument patch for Native Instruments' KONTAKT sampler. You open it inside KONTAKT (paid) or KONTAKT Player (free, but limited to licensed libraries). It is not an audio file and it almost never works without the full sample library folder it belongs to.

Programs that open .NKI files

Windows
KONTAKT, KONTAKT Player, Native Access
macOS
KONTAKT, KONTAKT Player
.NKI format details
Full nameNative Instruments KONTAKT Instrument
DeveloperNative Instruments
First released2002 (KONTAKT 1)
CategoryAudio & Video
MIME typeapplication/octet-stream

Related viewers

Other free tools to open and preview your files.

Is my .NKI file uploaded to a server?

No. Your .NKI file is converted for you. The converted file is created in memory,.

Why is conversion slower than desktop software?

Browsers give web pages a single CPU core for this kind of work and no hardware video encoder. Short clips convert in seconds; for long 4K films a desktop app like HandBrake is faster. Use Start and Length to convert just the part you need.

Which output format should I pick?

MP4 plays on every phone, TV and browser. WEBM is an open format that's great for the web. MP3 keeps only the sound. MKV (no re-encode) is instant and lossless, but only changes the container.

Can I keep all audio tracks and subtitles?

The MKV (no re-encode) option copies every track as-is. MP4 and WEBM keep the first video and audio track, which is what most players use.

Why can't some files be converted?

Files protected with DRM (for example purchased iTunes .m4p songs or some .wmv rentals) are encrypted. We can show what's inside, but nobody can convert them without the key.

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