DubInstanteDubInstante
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v0.12.0 (Public Beta)

Complete Dubbing Studio. Interface & Native Engine.

From frame-by-frame lip sync to the native C++17 and OpenGL engine under the hood. Here is everything DubInstante is capable of.

Part 01

Studio Features & Recording Workflow

01

Buttery-smooth OpenGL video playback

  • ▸OpenGL rendering — Qt 6 Multimedia (FFmpeg) decoding drawn on an OpenGL surface
  • ▸Frame-by-frame stepping — Millisecond-accurate positioning with the arrow keys
  • ▸Real-time master clock lock — Audio, video, and rythmo bands tightly locked together
  • ▸Dynamic speed control — 1% to 400% for line practice and fast editorial review
  • ▸Video formats — Opens MP4, MKV, MOV, AVI, M4V, WebM and MXF files
02

Dynamic editable rythmo bands (1 to 4 tracks)

  • ▸Up to 4 parallel tracks — Direct multiple dialogue tracks or sync cue points
  • ▸Direct in-place typing — Enter text with immediate preview straight on the moving band
  • ▸Complete studio typography — Fonts, colors, and 4 high-contrast pro visual themes
  • ▸Click-to-scrub navigation — Jump directly to any timecode with a single click
  • ▸Virtualized text rendering — Only visible characters are drawn, even on a feature-length film
03

Direct multi-track recording (up to 4 microphones)

  • ▸Simultaneous 4-mic capture — Record up to 4 distinct vocal takes simultaneously
  • ▸Independent track parameters — Assign dedicated physical microphones, volume, and visual styling/colors per track
  • ▸Live visual monitoring — Real-time reactive dB meters and studio gain sliders per track
  • ▸Broadcast WAV fidelity — Uncompressed WAV capture ready for final mixing
  • ▸Distraction-free fullscreen — Total visual immersion for the voice talents at the mic
04

FFmpeg exports & .dbi sessions

  • ▸FFmpeg export — H.264 + AAC by default; H.265, ProRes, VP9, 24-bit PCM or video stream copy (no re-encoding) in expert mode
  • ▸Compact .dbi format — Self-contained, lightweight binary project files
  • ▸Portable ZIP archives — Package entire sessions to share with audio post-production
  • ▸Asynchronous I/O — Background saves that do not block the interface
Part 02

Under the Hood: Architecture & C++ Performance

DubInstante avoids heavy Electron web wrappers. Everything is compiled natively with C++17, Qt 6, FFmpeg, and OpenGL for frame-accurate synchronization.

Core Technology Stack

C++ 17

Compiled native code

No web layer: the studio is a compiled native application.

Qt 6.5+

Native Cross-Platform UI

Native OS widgets and Qt Multimedia for instant responsiveness across Windows and Linux.

OpenGL

GPU-Accelerated 60 FPS

Buttery-smooth rythmo scrolling without overloading your CPU.

FFmpeg

Decoding & export

Decoding and export of common formats (MP4, MKV, MOV, H.264, H.265, ProRes).

Async I/O

Non-Blocking Background I/O

Keep scrubbing and editing seamlessly while sessions export in the background.

Engine Modules & Real-time Optimization

  • Playback Engine — Qt 6 Multimedia decoding with frame-accurate audio/video sync
  • Hardware Accelerated Canvas — Smooth OpenGL rendering even during fast frame scrubbing (← / →)
  • Rythmo Band Virtualization — Render tens of thousands of syllables with zero memory spikes
  • Multi-track Audio Engine — Uncompressed WAV capture straight from your audio interfaces
  • Export Pipeline — Takes mixed with amix, then H.264/AAC encoding, or video stream copy in expert mode
  • Local Project Format — JSON-based .dbi projects with SHA-256 integrity check, archivable as ZIP

Operating Systems & System Requirements

Windows

Portable ZIP package (.zip), DubInstante binary, FFmpeg included

  • ·Windows 10 or 11 (64-bit)
  • ·FFmpeg (pre-bundled in package)

macOS

Without an Apple developer licence, the app cannot be granted microphone access: version on hold

  • ·Version on hold
  • ·Waiting for an Apple developer licence (microphone access)

Linux

ZIP archive (.zip) containing an AppImage per distribution family

  • ·Ubuntu 22.04+, Debian 12+, Mint 21+ (glibc 2.35+)
  • ·Arch, EndeavourOS, Manjaro (recent glibc)

Android

App rebuilt from scratch, about 95% of the studio features, minus multi-microphone

  • ·Android tablets
  • ·In development for v0.13 — full rewrite

Build from Source (Linux / Debian / Ubuntu)

CMake & GCC/Clang build pipeline:

sudo apt install qt6-multimedia-dev libqt6opengl6-dev ffmpeg
sudo apt install gstreamer1.0-libav gstreamer1.0-plugins-good gstreamer1.0-plugins-bad
mkdir build && cd build
cmake .. && make -j$(nproc)
./DubInstante
View complete source code on GitHub →

Ready to experience true studio performance?

Download DubInstante today. Free forever, open-source, and fully local.

Download v0.12.0 (Beta)Why DubInstante? (Comparison)