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Play a SNG video online, free

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

Drop your .SNG file here

Opens your .SNG 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 .SNG file online

Three steps, all tab.

01

Open your file

Drop your .SNG 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 .SNG 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 .SNG file?

Everything worth knowing about Song File (MIDI / tracker).

An SNG file is a song or music project file, but at least five unrelated programs use this extension. The most common sources are an old Midisoft Studio MIDI project from the 1990s, a GoatTracker C64 chiptune, or a Korg keyboard arrangement. Open a GoatTracker SNG in GoatTracker 2 (free), try a Midisoft SNG in Cakewalk, and return a Korg SNG to the keyboard. All variants contain only audio data, no executable code.

Programs that open .SNG files

Windows
Winamp, Cakewalk by BandLab, GoatTracker 2
macOS
GoatTracker 2
Linux
GoatTracker 2
.SNG format details
Full nameSong File (MIDI / tracker)
DeveloperVarious (no single owner — see db_audit_notes)
First released1990s (MIDI-based SNG from Midisoft Studio ~1993; GoatTracker SNG 2001)
CategoryAudio & Video
MIME typeapplication/octet-stream (no registered MIME)
Signature47 54 53 35 ("GTS5" - GoatTracker 2 song header)

Related viewers

Other free tools to open and preview your files.

Is my .SNG file uploaded to a server?

No. Your .SNG 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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