miditrack
Turn chiptunes into MIDI you can edit.
A Mac app that converts NES (.nsf/.nsfe), SNES (.spc/.spc2/.rsn), and VGM (.vgm/.vgz) chiptune music into editable MIDI, with in-browser auditioning and editing. Everyday use needs no terminal after the one-time setup. Your source files, MIDI, and rendered audio stay local.
v0.5.0 · 2026/9/26
What's new · v0.5.0 · 2026/9/26
- Added the ability to change and save the initial values for variation generation speed and pitch in the preferences.
- Improved pitch calculation for the YM2612, YM2608, and YM2203 in VGM to MIDI conversion.
8-bit sound, turned into editable MIDI.
Convert, edit tracks, work the piano roll, and export — all in the browser.
Multi-format conversion
Converts NES (.nsf/.nsfe), SNES (.spc/.spc2/.rsn), and VGM (.vgm/.vgz) source files to MIDI. NSF and SPC rip packs with multiple songs offer a song picker.
Batch upload and playlists
Upload several source files, a ZIP rip pack, or a source file together with an .m3u playlist at once. A playlist can supply song titles automatically.
Zoomable piano roll editing
Inspect notes in a zoomable piano roll, seek and loop playback, and change the complete song's speed and pitch.
SoundFont / original sound switching
Choose SoundFont or original game sound for supported tracks. Original sound uses the relevant game SoundFont or chip renderer, and volume stays adjustable in either mode.
Track editing and saved presets
Reassign General MIDI instruments, set per-track volume or mute, and sort the track list. Save favourite instruments and ensemble presets locally.
Project save and WAV/ZIP export
Save and reopen a .miditrack project to restore your edits without reconverting. Download an edited MIDI or final-quality WAV, a ZIP of speed/pitch variations, or a ZIP with one WAV per track.