# Convert documents to podcast audio with OpenAI TTS: n8n workflow

> Started by an event in a connected app, and works across Google Drive. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/convert-documents-to-podcast-audio-with-openai-tts (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Content](https://millionrounds.com/workflows?category=Content#library)

# Convert documents to podcast audio with OpenAI TTS

Started by an event in a connected app, and works across Google Drive. It hands the judgement calls to OpenAI. 15 steps: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fconvert-documents-to-podcast-audio-with-openai-tts)

**15 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Model 4 Logic 4 Service 6

The steps in the order they run, from what starts it.

- 1 **Google Drive Trigger** Google Drive trigger *Starts it*
- 2 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 3 **Structured Output Parser** Output Parser Structured *Model*
- 4 **Download file** Google Drive *Service*
- 5 **Generate Podcast Script from Text** Chain Llm *Model*
- 6 **Convert File to Text** Extract From File *Service*
- 7 **Determine Participants** Set *Logic*
- 8 **Split Out** Split Out *Logic*
- 9 **Generate Speaker Audios with Prefered Voices** Open Ai *Model*
- 10 **Convert File to Base 64** Extract From File *Service*
- 11 **Store Files in MongoDB** Http Request *Service*
- 12 **Convert IDs to URL** Set *Logic*
- 13 **Combine URLs into Payload** Aggregate *Logic*
- 14 **Generate Podcast** Http Request *Service*
- 15 **Upload File to Google Drive** Google Drive *Service*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 15
- **Size:** Medium: a working afternoon
- **Connects to:** Google Drive
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Google Drive account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 15 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 15 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fconvert-documents-to-podcast-audio-with-openai-tts)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Drive](https://millionrounds.com/workflows?service=Google+Drive#library)

## Workflows like it

Also content, with the same services where possible, closest in size first.

- [**AI Viral Video Producer: Ideation to Veo3 Generation** 15 steps · calls a model · Google Drive, Google Sheets](https://millionrounds.com/workflow/ai-viral-video-producer-ideation-to-veo3-generation)
- [**Automate newsletter creation & client delivery with OpenAI** 15 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/automate-newsletter-creation-and-client-delivery-with-openai)
- [**Automated YouTube publishing from Drive with OpenAI and Gemini** 15 steps · calls a model · Google Drive, Telegram](https://millionrounds.com/workflow/automated-youtube-publishing-from-drive-with-openai-and-gemi)
- [**Convert RSS news to AI avatar videos with Heygen** 15 steps · calls a model · Google Drive, Google Sheets](https://millionrounds.com/workflow/convert-rss-news-to-ai-avatar-videos-with-heygen)
- [**Convert blog posts to podcast episodes with Google Drive** 15 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/convert-blog-posts-to-podcast-episodes-with-google-drive)
- [**Generate 8-second product ad videos from Drive images** 15 steps · calls a model · Google Drive](https://millionrounds.com/workflow/generate-8-second-product-ad-videos-from-drive-images)