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Play a DMF video online, free

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

Drop your .DMF file here

Opens your .DMF 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 .DMF file online

Three steps, all tab.

01

Open your file

Drop your .DMF 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 .DMF 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 .DMF file?

Everything worth knowing about X-Tracker / D-Lusion Digital Music Format.

A DMF file is a tracker music module created by X-Tracker, a DOS music composition tool from D-Lusion in the mid-1990s. To play it today, use OpenMPT or XMPlay, both free for Windows. DeliPlayer, once the standard recommendation, is no longer available through official channels.

Programs that open .DMF files

Windows
Awave Studio, XMPlay, OpenMPT
Linux
OpenMPT (via Wine)
.DMF format details
Full nameX-Tracker / D-Lusion Digital Music Format
DeveloperD-Lusion (Thorsten Mutschall)
First released~1994-1995 (X-Tracker for MS-DOS)
CategoryAudio & Video
MIME typeaudio/x-dmf
Signature44 44 4D 46 ("DDMF")

Related viewers

Other free tools to open and preview your files.

Is my .DMF file uploaded to a server?

No. Your .DMF 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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