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SubtitleGenerator

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This application takes a video file and generates subtitles using Google cloud services

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# Subtitle Generator 🎬

A robust Java-based CLI application that automates video transcription and translation using Google's **Chirp 2** model. It converts video audio into professionally formatted, granular SRT subtitles.

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## ✨ Features
* **High-Fidelity Transcription:** Uses Google Cloud's state-of-the-art **Chirp 2** model for superior accuracy.
* **Auto-Translation:** Seamlessly translates speech from the movie language into your chosen target language.
* **Smart SRT Formatting:** Automatically splits long sentences into standard subtitle chunks (default: 42 characters per line) to ensure readability.
* **Dynamic Configuration:** Fully decoupled settings—manage file paths, bucket names, and languages via a simple properties file.
* **Cloud Optimized:** Features a deep cleanup routine to purge temporary files in Google Cloud Storage and cancel orphaned operations to save costs.

---

## ⚠️ Important Notice: Security & Costs
* **Credentials Security:** NEVER commit your `config.properties` or Google JSON key to GitHub. These files are listed in the `.gitignore` for your protection. 
* **GCP Billing:** This application uses paid Google Cloud services. Monitoring your usage at the [GCP Console](https://console.cloud.google.com) is highly recommended.
* **FFmpeg Dependency:** This tool requires **FFmpeg** to be installed on your local system to handle audio extraction.

---

## 🚀 How to Run

### 1. Prerequisites
* **Java 11** or higher.
* **Maven** for dependency management.
* **FFmpeg** (Verify installation by running `ffmpeg -version` in your terminal).

### 2. Setup Configuration
Create a file named `src/main/resources/config.properties`. This file is ignored by Git, so you must create it manually based on the following template:

```properties
# Local and Output Paths
video.path=/Users/username/movies/movie.mp4
audio.temp.path=temp_audio.wav
output.srt.path=final_subtitles.srt

# Google Cloud Configuration
google.project.id=your-gcp-project-id
google.storage.bucket=your-unique-bucket-name
google.credentials.path=/path/to/your/service-account-key.json

# Language and Formatting
movie.language=hi-IN
subtitle.language=en
srt.char.limit=42
```

### 3. Execution Commands
Run these commands in your project's root directory:
* **Step 1: Build the project and install dependencies.**
```mvn clean install```
* **Step 2: Run the application.**
```mvn exec:java -Dexec.mainClass="com.cppc.subtitlegenerator.VideoSubtitlerV2"```

## 📄 License
MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

SubtitleGenerator

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