Narrate · Illustrate · Present

Turn your slides into a video that speaks in your voice.

SlideStream turns a Markdown or PowerPoint deck into a narrated video presentation — written as real spoken narration (not read-aloud bullets), voiced by a clone of your own voice, illustrated with AI images, and optionally fronted by a talking-head avatar of you.

⬇ Download the app ▶ Try it in the browser

Open source. Self-host it, run it on your laptop, or bring your own AI keys — your decks and your voice stay yours.

From deck to video in one step

1

Bring a deck

A Markdown file or a PowerPoint .pptx — speaker notes become the narration source when present.

2

Add your voice & face

A 20-second voice sample and a photo (both optional). Used once per render, never stored.

3

Get a video

Presenter-style narration, AI or stock images per slide, and an optional talking head — rendered to MP4.

Everything is swappable — and yours

🗣️ Your own voice

Self-hosted Chatterbox voice cloning from a short sample, offline Kokoro, or bring your own ElevenLabs / OpenAI key. Never reads the slides aloud — it writes real narration.

🖼️ Images that fit

Local folder, self-hosted SwarmUI/FLUX, Google Imagen, DALL·E, or free Pexels/Unsplash stock — matched to each slide.

🎭 Talking-head avatar

A lip-synced head of you in the corner — self-hosted SadTalker, or hosted D-ID. Optional, off by default.

📝 Narration you control

Presenter-style from notes or content, a length target per slide, verbatim speaker notes, or your own exact script.

🔒 Privacy-first

Runs on your machine or your server. Voice samples and photos are used per-render and deleted — no biometric data at rest.

🧩 Two outputs, one deck

enrich a deck with images (Markdown or PPTX), or create the full narrated video.

Get it

Free and open source. The desktop app runs everything on your machine — no account, no terminal.

⬇ Download the desktop app ▶ Try the hosted app

macOS: the build is unsigned for now — first launch via right-click → Open. Prefer the terminal? The pip install is on the right. View source.

Install with pip
# everything, including the web UI
pip install "slide-stream[all-ai,serve]"

# make a video
slide-stream create deck.md out.mp4

# or open the web UI in your browser
slide-stream serve

Python 3.10+ and FFmpeg required. Provider keys are optional and read from your environment.