// video · langswap-app/langswap

langswap

Self-hosted AI video dubbing with voice cloning on your own GPU.

💎 Hidden gem★ 44 stars⑂ 6 forksAGPL-3.0updated 2026-06

▦ visual — this project's README ships no embeddable screenshot,
so here's a placeholder. The guide below is complete regardless.

// project facts

Project facts

langswap is an open-source video project by langswap-app (langswap-app/langswap on GitHub). It has 44 GitHub stars and 6 forks, is released under the AGPL-3.0 license, and was last updated on GitHub on 22 June 2026.

Repository: langswap-app/langswap
GitHub stars: 44
Forks: 6
License: AGPL-3.0
Last updated on GitHub: 22 June 2026
Category: Video
Listing: Hidden gem — a shorter page for a lesser-known project
Official site: Official site

// how it works

How it works

Clone the repository
Download the source and enter the folder.
Install dependencies
Pull the Python packages including the models.
Launch the interface
Start the Gradio app on your GPU machine.
Dub a video
Upload, translate, clone a voice, and export.

// features

Why people love it

Self-hosted dubbing

The whole pipeline on your own GPU.

Voice cloning

F5-TTS voices for natural dubs.

ASR plus translation

Transcribe then translate in one flow.

Subtitle output

Subtitles alongside the dubbed audio.

Gradio interface

Simple web UI for the pipeline.

Local inference

No cloud APIs in the loop.

// run it

Run it yourself

Step 1 — Clone the repo
Download the source and move into the project folder.
```
git clone https://github.com/langswap-app/langswap.git
cd langswap
```
Step 2 — Install dependencies
Pull the Python packages it needs.
```
pip install -r requirements.txt
```
Step 3 — Launch the app
Start the Gradio interface.
```
python app.py
```

// use cases

What you can build

Dub internal videos without uploading them.
Clone a speaker voice for multilingual releases.
Generate subtitles as part of dubbing.
Run a private localization pipeline.

// faq

Questions, answered

Who maintains langswap?

It is an open-source project at langswap-app/langswap with 6 forks.

Is it free for commercial use?

It is AGPL-3.0, which has strong copyleft terms — check with legal before commercial use.

Do I need a GPU?

Yes. Inference is local, so a CUDA-capable GPU is expected.

Which models does it use?

F5-TTS for voices and Qwen-family models, per the topics.

Is there a web UI?

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Get langswap

Free and open — grab the source, star the repo, and start creating.

View on GitHub ↗← More Video tools