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README.md ADDED
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+ # PDF to Podcast Converter
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+
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+ ## Overview
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+
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+ This project provides a tool to convert any PDF document into a podcast episode! Using OpenAI's text-to-speech models and Google Gemini, this tool processes the content of a PDF, generates a natural dialogue suitable for an audio podcast, and outputs it as an MP3 file.
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+
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+ ## Features
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+
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+ - **Convert PDF to Podcast:** Upload a PDF and convert its content into a podcast dialogue.
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+ - **Engaging Dialogue:** The generated dialogue is designed to be informative and entertaining.
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+ - **Multiple Voice Options:** Choose from different voices to narrate the podcast.
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+ - **User-friendly Interface:** Simple interface using Gradio for easy interaction.
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+
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+ ## Installation
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+
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+ To set up the project, follow these steps:
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+
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+ 1. **Clone the repository:**
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+ ```bash
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+ git clone https://github.com/knowsuchagency/pdf-to-podcast.git
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+ cd pdf-to-podcast
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+ ```
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+
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+ 2. **Create a virtual environment and activate it:**
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+ ```bash
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+ python -m venv venv
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+ source venv/bin/activate
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+ ```
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+
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+ 3. **Install the required packages:**
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+ ```bash
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+ pip install -r requirements.txt
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+ ```
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+
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+ ## Usage
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+
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+ 1. **Set up API Key(s):**
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+ Ensure you have an Google Gemini API key. You can get yours at https://aistudio.google.com/app/apikey.
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+ Use it as the value to `GEMINI_API_KEY`.
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+ You'll also need an api key for OpenAI which you can either pass through the interface or set as the `OPENAI_API_KEY` environment variable.
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+
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+ Gemini flash is used as the LLM and OpenAI is used for text-to-speech.
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+
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+ 2. **Run the application:**
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+ ```bash
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+ python main.py
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+ ```
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+ This will launch a Gradio interface in your web browser.
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+
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+ 3. **Upload a PDF:**
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+ Upload the PDF document you want to convert into a podcast.
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+
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+ 4. **Enter OpenAI API Key:**
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+ Provide your OpenAI API key in the designated textbox.
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+
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+ 5. **Generate Audio:**
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+ Click the button to start the conversion process. The output will be an MP3 file containing the podcast dialogue.
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+
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+ ## Project Structure
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+
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+ - **main.py:** Main application script.
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+ - **requirements.txt:** List of dependencies.
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+ - **README.md:** Project documentation (this file).
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+
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+ ## Code Explanation
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+
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+ ### Dialogue Models
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+
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+ Defines the structure of the dialogue using Pydantic models.
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+
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+ ```python
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+ class DialogueItem(BaseModel):
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+ text: str
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+ voice: Literal["alloy", "onyx", "fable"]
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+
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+ class Dialogue(BaseModel):
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+ scratchpad: str
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+ dialogue: List[DialogueItem]
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+ ```
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+
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+ ### LLM Function
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+
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+ Generates dialogue based on the input text using the `promptic` decorator.
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+
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+ ```python
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+ @llm(model="gemini/gemini-1.5-flash")
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+ def generate_dialogue(text: str) -> Dialogue:
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+ # Function to generate podcast dialogue
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+ ```
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+
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+ ### TTS Function
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+
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+ Converts text to speech using OpenAI's text-to-speech model.
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+
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+ ```python
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+ def get_mp3(text: str, voice: str, api_key: str = None) -> bytes:
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+ # Function to generate MP3 from text
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+ ```
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+
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+ ### Main Function
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+
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+ Processes the PDF, generates dialogue, and converts it to audio.
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+
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+ ```python
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+ def generate_audio(file: bytes, openai_api_key: str) -> bytes:
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+ # Main function to process PDF and generate audio
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+ ```
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+
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+ ### Gradio Interface
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+
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+ Creates a user-friendly interface for uploading PDFs and generating podcasts.
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+
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+ ```python
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+ demo = gr.Interface(
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+ title="PDF to Podcast",
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+ description="Convert any PDF document into an engaging podcast episode!",
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+ fn=generate_audio,
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+ inputs=[
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+ gr.File(label="Input PDF", type="binary"),
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+ gr.Textbox(label="OpenAI API Key", placeholder="Enter your OpenAI API key here"),
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+ ],
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+ outputs=[
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+ gr.Audio(format="mp3"),
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+ ],
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+ )
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+
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+ demo.launch(show_api=False)
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+ ```
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+
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+ ## License
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+
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+ This project is licensed under the Apache 2.0 License. See the [LICENSE](LICENSE) file for more information.