DubLab — English ↔ Burmese Video Dubbing

Upload a short video, get it back dubbed in the other language.

DubLab is a self-hosted web app that dubs short videos between English and Burmese (Myanmar). It transcribes the speech (faster-whisper, local), translates it (Gemini API), synthesizes a new voice track (Nara Mini local ONNX voices Shoon + Ko Banyar by default, Edge-TTS / Gemini TTS as options), syncs it to the picture, and returns a finished MP4.

🌐 Live demo: https://dublab.kbko.qzz.io 📄 License: MIT — Source: https://github.com/khantbhoneko36-commits/dublab

Features

• 🎬 Video dubbing — upload a video (≤ 10 min, ≤ 250 MB) or paste a link (YouTube, TikTok, Instagram, Facebook, X, Vimeo, Bilibili…), download the dubbed MP4
• 🗣️ Burmese + English voices — Nara Mini local voices, free, no API key
• 🎙️ Local transcription — faster-whisper on your own machine
• 🌏 Translation — Gemini API (free tier works), with NLLB local fallback
• ⏱️ Sync engine that never cuts a sentence — speech is time-fitted up to a capped speed-up (1.65×); overflow cascades into the next slot
• 💧 Credit watermark — small lower-right watermark (configurable text)
• 🛡️ Abuse protection built in — job queue cap, per-IP upload rate limit, 24 h result retention

Quick start

Requirements: Python 3.11+, ffmpeg, and a free Gemini API key.

git clone https://github.com/khantbhoneko36-commits/dublab.git
cd dublab
python3 -m venv venv && source venv/bin/activate
pip install -r requirements.txt
cp .env.example .env   # put your GEMINI_API_KEY in .env
set -a; source .env; set +a
waitress-serve --listen=127.0.0.1:8092 --threads=8 app:app

Open http://127.0.0.1:8092, drop in a short video, pick a direction and a voice, and download the dubbed result.

Docker

docker build -t dublab .
docker run -d --name dublab -p 127.0.0.1:8092:8092 --env-file .env dublab

⚠️ Dependency pins matter: requirements.txt pins av==15.1.0 and huggingface_hub<1 — newer versions break faster-whisper 1.2.x. The Nara Mini voices (Shoon + Ko Banyar) are downloaded at Docker build time from YeeNyunn/nara-mini-v1 on the Hub.

Configuration

Variable	Required	Purpose
GEMINI_API_KEY	✅	Translation (and TTS fallback if no TTS keys set)
GEMINI_TTS_API_KEYS	—	Comma-separated keys for Gemini TTS rotation
DUBLAB_ADMIN_KEY	—	Password for the /admin reviews page

မြန်မာဘာသာ အကျဉ်းချုပ်

DubLab ဆိုတာ ဗီဒီယိုအတိုတွေကို အင်္ဂလိပ် ↔ မြန်မာ အပြန်အလှန် အသံသွင်း (dub) လုပ်ပေးတဲ့ open-source web app တစ်ခုပါ။ ဗီဒီယိုတင်လိုက်ရင် စကားပြောကို စာသားအဖြစ်ပြောင်း၊ ဘာသာပြန်၊ မြန်မာအသံ (ကျား/မ) နဲ့ အသံအသစ်ဖော်ပြီး၊ စာကြောင်းမပြတ်အောင် အချိန်ကိုက် ညှိပေးကာ dub လုပ်ပြီးသား MP4 ပြန်ချပေးပါတယ်။

Maintainer

Built and maintained by Khant Bhone Ko — sole maintainer: releases, issue triage, and the production deployment. More projects: https://pro.kxant.org