aivideoAI avatar videos let you put a talking presenter on screen without filming anyone. The workflow is the same across tools: script in, lip-synced video out. Here’s how to do it, step by step.
Step 1: Write the script
The script drives everything. Write it the way you’d write a short presentation — a hook, clear points, and a call to action. Avatar tools render exactly what you type.
Step 2: Pick a tool and avatar
- Synthesia — the most realistic avatars (240, 160+ languages, from $29/mo, score 9.2/10)
- HeyGen — the most avatars and languages (700+, 175, 4K, from $29/mo, score 8.8/10)
- D-ID — the cheapest, and it can create an avatar from a single photo (from $5.9/mo, score 7.5/10)
Step 3: Generate and review
Paste the script, pick the language and voice, and generate. Review the lip-sync and pronunciation — especially for names or technical terms.
Step 4: Export and use
Export at your plan’s resolution and drop the video into your LMS, social post or ad. Synthesia is watermark-free across paid plans; note that HeyGen’s free tier is watermarked.
The full stack
- Most realistic: Synthesia
- Most avatars + languages: HeyGen
- Photo-to-avatar + budget: D-ID
What actually matters
The avatar is the easy part — the script is the product. A great script with a basic avatar beats a weak script with the most realistic avatar. Start on a free tier, test the lip-sync, and only pay once you’ve validated the format.
