Scylla's Band (offline, 14 voices, 6 languages)

VoicesOfflineCPU onlyCommercial use OK

Dubs your subtitles in English, Spanish, Italian, French, German and Vietnamese with Scylla's Band, in fourteen built-in voices that each speak all six. It runs on your own computer's processor, many times faster than real time, with a 240 MB model.

Install it from Subtitld

Settings Add-ons Scylla's Band (offline, 14 voices, 6 languages) Install

Subtitld downloads it, checks its SHA-256, and keeps it updated.

Source on GitHub
Languages
6
Models
1
Voices
14
Add-on download
14–22 MB
RAM, at least
700 MB

What it does

Fourteen voices, six languages each

Every voice speaks English, Spanish, Italian, French, German and Vietnamese, so one speaker keeps the same voice in every language you dub into.

Fast on a CPU

A second of speech takes well under a tenth of a second to make on a laptop processor, with under 500 MB of memory. No graphics card is used.

Intensity, pace and pitch

Make the delivery calmer or more intense, slower or faster, higher or lower, in the add-on's settings.

Offline after the first line

The model, 240 MB, downloads once, the first time you dub with it. After that, nothing leaves your computer.

Before you install

  • Disk: about 300 MB, most of it the model, downloaded on the first line.
  • Memory: under 500 MB while it speaks.
  • Processor: any 64-bit Intel or AMD processor, or any Apple Silicon Mac.

Scylla's Band speaks only in its own voices: it does not clone the speaker in the video. For the speaker's own voice, use VoxCPM2, Sopro or Chatterbox.

Voices

In the Speakers tab, choose Scylla's Band as a speaker's Dubbing engine, then pick a Voice. Turn on Fit dub to subtitle duration for the speaker to stretch or squeeze each line to its subtitle. Set the project's language before you dub.

14 voices.

The fourteen voices are Scylla, Ariadne, Felix, Gwen, Ink, Kincade, Max, Orpheus, Poppy, Priya, Rex, Stone, Thistle and Tuesday. Each was trained in all six languages, so the list is the same whatever your project's language. In English, Ink, Orpheus and Tuesday speak British English and the others American English.

Subtitld gives each speaker a seed, so dubbing a line again gives the same take. Change a word and the line is spoken anew.

Models

The model is not inside the add-on: it downloads into Subtitld's shared model cache the first time you dub, from spybyscript's Hugging Face repository at a pinned release, each file checked. An interrupted download resumes where it stopped. Updating or removing the add-on keeps the model.

Model DownloadGood for
Scylla's Band v3-20261104 (LiteRT bundle) Default scyllasband-litert
240 MB
Every voice and language, many times faster than real time on a CPU

The add-on runs Scylla's Band's own C++ runtime with Google's LiteRT, inside the add-on's process, so it needs no Python machine-learning libraries and starts in a moment.

Options

In Settings › Add-ons › Scylla's Band (offline, 14 voices, 6 languages) › Configure.

Intensity
Default: 0

From calm (−2) to intense (2); 0 is each voice's own delivery. It changes how strongly a line's feeling comes through, not which feeling it is.

Pace
Default: 0

From slower (−2) to faster (2), the words and the pauses between them. Subtitld's own speed control and Fit dub to subtitle duration still apply on top.

Pitch
Default: 0

Moves every voice up or down, in semitones.

CPU threads
Default: 0

0 lets the runtime choose, up to 4. Fewer threads keep the computer more responsive while it dubs.

Intensity, pace and pitch apply to every speaker who uses Scylla's Band in the project.

Languages

English, Spanish, Italian, French, German and Vietnamese. A project in any other language gets a message that says so: pick another dubbing engine for it.

Numbers are read as words in each of the six languages, so "42" becomes "forty-two" in English and "bốn mươi hai" in Vietnamese.

  • en
  • es
  • it
  • fr
  • de
  • vi

Platforms

System DownloadTested
Linux x86-64 22.4 MBDubbed with the real model in all six languages, on a real machine and in CI
macOS (Apple silicon) 18.5 MBDubbed with the real model in all six languages, in CI (Apple Silicon)
Windows x86-64 13.6 MBDubbed with the real model in all six languages, in CI

Linux x86-64, macOS on Apple Silicon and Windows x86-64. Each release is built on all three, and on each one CI installs the add-on as Subtitld does, downloads the model and dubs with it in all six languages. On Linux it needs glibc 2.35 or newer.

Troubleshooting

  • network_unavailableThe model couldn't be downloaded. Check your connection and try again: the download resumes.
  • disk_fullNot enough disk space for the model, about 300 MB.
  • unsupported_languageThe project's language is not one of the six, or not set. Set it in the project, or pick another dubbing engine.
  • unsupported_voiceThe project names a voice this version doesn't have. Pick the voice again in the Speakers tab.
  • bad_paramsThe line has no text.
  • internalSomething failed inside the add-on; the message has the details.

License

Add-on
Apache-2.0
Engine
Apache-2.0
libscyllasband, Scylla's Band's own runtime, with Google's LiteRT
Model
Apache-2.0
Scylla's Band weights, by spybyscript; parts from Vocos and DeepPhonemizer are MIT

The add-on, Scylla's Band's runtime, LiteRT and the Scylla's Band weights are all Apache-2.0, and the parts of the model that come from Vocos and DeepPhonemizer are MIT. You can use the add-on and the dubs it makes for any purpose, paid work included. The dubs you make are yours.

Versions

  • 26.11.1

    Offline text-to-speech with Scylla's Band: fourteen voices, each speaking English, Spanish, Italian, French, German and Vietnamese at 24 kHz. Eleven voices speak American English and three (Ink, Orpheus, Tuesday) British English.

    • The model, about 240 MB, downloads on the first line, checked against pinned sha256 sums; an interrupted download resumes.
    • Runs on the CPU, many times faster than real time, in about 500 MB of memory.
    • Intensity, pace and pitch in Configure, each from -2 to 2.
    • The same seed gives the same take, so a regenerated line keeps its delivery.
    • Built-in voices only: Scylla's Band does not clone a speaker's voice.

    Linux x86_64, macOS arm64 and Windows x86_64.

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