Slides Narration Video Best Practices (2Slides + Remotion) — From One Prompt to a Ready-to-Share MP4

Creating a slides narration video used to be a multi-hour workflow: outline → design slides → write a script → record voiceover → sync timing → render.

With 2Slides + Remotion, you can now do it in one prompt and get a clean MP4 in ~10 minutes—good enough for product explainers, training, and marketing content.

This guide is a practical checklist for shipping higher-quality narration videos consistently.

What you’re building

A fully automated pipeline:

1) Generate slides (pages/PDF) with 2Slides
2) Generate narration audio with 2Slides
3) Download assets (pages + audio zip)
4) Create a Remotion project and sequence pages + audio
5) Render MP4

The 80/20: what makes narration videos feel “professional”

1) Script first, slides second (even if AI generates both)

A narration video is audio-led. If the narration is clear and well-paced, viewers forgive simple slides. If narration is messy, no amount of design saves it.

Best practices

• Keep sentences short (spoken language, not blog language)
• One idea per slide
• Avoid reading dense paragraphs verbatim

2) Timing rules that never fail

• Target 12–18 seconds per slide for explainers
• Narration pace: ~140–170 wpm (English)
• If narration for a slide exceeds 25–30s, split the slide

3) Visual rhythm: treat slides like cuts

A narration video should feel like “cuts” in video editing.

• Alternate layouts (text-heavy → visual → text)
• Insert an occasional “breathing slide” (a big headline + 1 icon)
• Use consistent margins and font hierarchy

4) Audio quality: loudness and silence

Even with great TTS, you still want predictable audio levels.

• Normalize to a consistent loudness target (e.g. -16 LUFS for web)
• Add 200–500ms padding between slides when switching topics
• Avoid abrupt starts: use a short fade-in (50–100ms)

5) Accessibility: subtitles are a multiplier

If the workflow can produce captions, do it.

• Burn-in captions for social distribution
• Or ship a sidecar .srt file

Recommended workflow in Claude Code + OpenClaw (copy/paste)

You can run this workflow from an agent environment (Claude Code / OpenClaw) by installing two skill packs:

• 2Slides skills: https://github.com/2slides/slides-generation-2slides-skills
• Remotion skills: https://github.com/remotion-dev/remotion/tree/main/packages/skills

Then use a single prompt like this (replace the topic):

Please help me create a slides narration video for the topic: [YOUR_TOPIC_CONTENT]

- Create slides using 2Slides create pdf slides API; decide the slide pages count by AI.
- Generate voice narration using 2Slides API.
- Download slides pages and voices zip using 2Slides API.
- Create a Remotion project and a slides narration video using pages and voices in sequence.
- Render and output the video.

Real case demo:
https://www.youtube.com/watch?v=_KswiI-Tgdc

Best practices for each pipeline step

Step 1) Slide generation (pages/PDF)

Goal: create slides that are readable at video resolution.

• Prefer larger fonts, fewer bullets
• Avoid tiny charts (video compression kills them)
• Use 16:9 layouts, high contrast

Pro tip: ask the agent to choose slide count based on content length.

Step 2) Voice narration

Goal: match narration structure to slide boundaries.

• Generate narration per slide (not one giant audio)
• Enforce a consistent tone ("confident, calm, concise")
• For acronyms/brand terms: provide pronunciation hints

Step 3) Asset packaging (zip download)

Goal: make rendering deterministic.

• Name assets in order: 001.jpg, 002.jpg… and 001.mp3, 002.mp3…
• Keep everything in a single folder for Remotion

Step 4) Remotion sequencing

Goal: correct sync, zero glitches.

• Set slide duration from audio length + padding
• Crossfade (optional): 6–12 frames is enough
• Consider a subtle background music bed at -28 to -32 dB

Step 5) Rendering

Goal: export a share-ready MP4.

• Use H.264, 1080p, ~8–12 Mbps for most use cases
• Validate on mobile (common failure: text too small)

QA checklist (before you ship)

• Does each slide’s headline match the narration?
• Any slide stays on screen for >25–30s? Split it.
• Any slide shows tiny text? Increase font size.
• Any abrupt audio start? Add a short fade/padding.
• Add subtitles for social distribution.

Next step

Try it with a real topic you care about (a product feature, onboarding flow, or weekly update). If you can turn one prompt into a consistent video pipeline, you can ship content faster than your competitors.