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apps/transcription/README.md

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+Before you follow anything in this guide, please make sure you've followed the steps in the [README](../../README.md) (under "Optional: Auto-captions (Transcription) Setup").
+
+Open your terminal and make sure you're in the `apps/transcription` directory.
+
+1. Create virtual environment
+
+```bash
+python -m venv env
+```
+
+2. Activate it
+
+**Windows:**
+
+```bash
+env\Scripts\activate
+```
+
+**macOS/Linux:**
+
+```bash
+source env/bin/activate
+```
+
+> Note: if you're using VS Code/Cursor and you're seeing errors with the imports about the modules not being found,
+> You might have to press CTRL + Shift + P -> Python: Select Interpreter -> Enter interpreter path -> Find -> env -> scripts -> python.exe
+
+3. Install libraries/packages/whatever you wanna call them
+
+```bash
+pip install -r requirements.txt
+```
+
+4. Make sure you have a Modal account. If you don't: [create one](https://modal.com/)
+
+> If you don't know what Modal is: it allows us to process the actual audio and transcribe with Whisper by providing the infra to run Python code with a lot of RAM, generally affordable.
+
+5. Once you've got a Modal accoumt, run this:
+
+```bash
+python -m modal setup
+```
+
+It's gonna open a browser so you can authenticate.
+
+6. Test it if you want to make sure it actually works:
+
+```bash
+modal run transcription.py
+```
+
+6. Deploy the function!
+
+```bash
+modal deploy transcription.py
+```
+
+7. Set the required secrets in Modal
+
+So the script we just deployed interacts with Cloudflare to do two things:
+
+- Download the audio (so it can be transcribed with Whisper)
+- Delete the file after processing (privacy)
+
+To do those things, the script needs access to these environment variables:
+```bash
+CLOUDFLARE_ACCOUNT_ID=your-account-id
+R2_ACCESS_KEY_ID=your-access-key-id
+R2_SECRET_ACCESS_KEY=your-secret-access-key
+R2_BUCKET_NAME=opencut-transcription
+```
+
+Remember, we set these earlier in `.env.local`.
+
+So let's do it:
+
+   - Go to [Modal Secrets](https://modal.com/secrets/mazewinther/main)
+   - Click "Custom" and enter "opencut-r2-secrets" for the name.
+   - Now you can just click "Import .env" and copy/paste the 4 variables from your `.env.local` file. Copy and paste these only:
+      ```bash
+      CLOUDFLARE_ACCOUNT_ID=your-account-id
+      R2_ACCESS_KEY_ID=your-access-key-id
+      R2_SECRET_ACCESS_KEY=your-secret-access-key
+      R2_BUCKET_NAME=opencut-transcription
+      ```
+    - Click "Done" and you should see some cool particles!