Start Translate Service

TranslateServer.md

Live Translated Captions (German)

Building the project requires two components: The translation service and the livecaptions project.

Starting the Translation Service

In one folder:

• python3 -m venv .
• source bin/activate
• pip install fastapi uvicorn transformers accelerate sentencepiece

Create the file translate_service.py:

from fastapi import FastAPI
from pydantic import BaseModel
from transformers import pipeline
from fastapi.middleware.cors import CORSMiddleware # Wichtig: Importiere die Middleware


# Modell laden (einmalig beim Start)
translator = pipeline("translation", model="Helsinki-NLP/opus-mt-en-de")

# API definieren
app = FastAPI(title="English → German Translation API")

origins = [
    "http://localhost",       # Wenn du es über http://localhost im Browser öffnest
    "http://127.0.0.1",       # Manchmal auch als 127.0.0.1 geöffnet
    "http://localhost:3000",  # Beispiel für eine React/Vue/etc. App
    "*",                      # Der Wildcard-Ursprung (für die Konsole)
]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,              # Liste der erlaubten Ursprünge (oder ["*"] für alle)
    allow_credentials=True,             # Cookies oder Authentifizierungs-Header zulassen (falls nötig)
    allow_methods=["*"],                # Erlaubt alle HTTP-Methoden (POST, GET, OPTIONS etc.)
    allow_headers=["*"],                # Erlaubt alle Header, inklusive Content-Type
)

class TranslationRequest(BaseModel):
    text: str

@app.post("/translate")
def translate(req: TranslationRequest):
    """Übersetzt einen englischen Satz ins Deutsche."""
    result = translator(req.text)
    translated_text = result[0]['translation_text']
    return {"translated_text": translated_text}

Start the service: uvicorn translate_service:app --host 0.0.0.0 --port 8000

Starting the Livecaptions Project

Build my fork of the LiveCaptions project (https://github.com/DaGeRe/LiveCaptions) as described in the README.

The commands are:

wget https://github.com/microsoft/onnxruntime/releases/download/v1.14.1/onnxruntime-linux-x64-1.14.1.tgz
tar -xvf onnxruntime-linux-x64-1.14.1.tgz
# Please export the path as $ONNX_ROOT
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ONNX_ROOT/lib

git clone git@github.com:DaGeRe/LiveCaptions.git
cd LiveCaptions
git submodule update --init --recursive
sudo dnf install libcurl-devel libadwaita-devel meson ninja