To prevent corrupt data, overlapping notes, or software crashes during conversion, follow this optimal technical preparation path:
Using the latest , the process is streamlined for Windows, Mac, and Linux. 1. Prepare Your MIDI File Ensure your MIDI file is clean. Recommendation: Use standard MIDI formats (Format 1).
Search community forums like the official DefleMask forum or chiptune-focused Discord servers for "midi_to_dmf.exe" or other user-created conversion tools.
Older tools like midi_to_dmf.exe from 2013 often required complex configuration files and had strict limitations on resolution (usually 24 pulses per beat) that would mess up your timing if not perfectly aligned. The newer Python-based converters handle varying resolutions and transpositions much more gracefully. midi to dmf new
“midi to dmf new” (hereafter referred to as MTD ) is a command-line or GUI-based utility (depending on the distribution) that translates the data from a standard MIDI file ( .mid ) into a DefleMask Module ( .dmf ). DMF is the native format of DefleMask, a popular cross-platform tracker that emulates classic sound chips like the NES (2A03), Game Boy (DMG), Sega Genesis (YM2612 + SN76489), C64 (SID), and many others.
| Issue | Fix | |-------|-----| | Wrong instruments | Reassign instruments per channel (FM, PSG, etc.) | | Notes cutting off | Adjust note release / add volume envelopes | | Arpeggios as chords | Convert to effect column commands ( E0x or E1x ) | | Drum tracks | Map to noise channel (if chip supports) or DAC samples |
Snap all note beginnings and note ends cleanly to the grid. 16th-note quantization is highly recommended. To prevent corrupt data, overlapping notes, or software
: If notes cut off prematurely, your tracks are likely exceeding hardware limits. Remember that a classic system like the Sega Genesis caps out at 6 FM audio channels (or 5 FM lines when using custom DAC samples). Split any dense compositions into multiple simpler sub-arrangements.
The initial import will generate a functional note matrix using placeholder instruments.
Export the session as a Standard MIDI File (Format 0 or Format 1). Step 2: Configure the Converter Utility Recommendation: Use standard MIDI formats (Format 1)
Because DefleMask and Furnace Tracker emulate actual vintage sound chips—such as the SEGA Genesis/Mega Drive YM2612 or the Nintendo Game Boy PAPU—the software enforces strict polyphony and channel limitations. Key Technical Differences
| | Description | Best For... | Key Points | | :--- | :--- | :--- | :--- | | Furnace Tracker | A multi-system chiptune tracker. | Creating new music with cross-system support. | Loads .dmf files perfectly. It can open the DMF file to fine-tune it and then export to .vgm for use on hardware. | | Live Recording (MIDI In) | Connect a MIDI keyboard directly to DefleMask. | Performing or inputting original music in real-time. | Not a "converter," but a viable pathway for original compositions. Allows for live recording and chord input modes. | | VGM as an Intermediate Step | Convert MIDI to DMF, then to VGM, then to a different format. | Creating music for custom hardware or sound drivers. | As one user noted, there is "no dmf2midi tool, it's possible to export from deflemask to vgm" and then use a VGM to MIDI converter. |
Before diving into the "how-to," it's essential to understand why this conversion has historically been so difficult. A .dmf file is the native module format for DefleMask, a popular cross-platform chiptune tracker used for producing music for retro game consoles like the Sega Genesis.
Quantize all notes cleanly to grid increments (like 16th notes) to ensure they snap properly to tracker rows.
: Retro sound chips cannot play true cords on a single channel. Explode your chords out across individual tracks.