Type one title — TopicVid writes the script, adds an AI voiceover, subtitles and background music, and renders a 9:16 vertical video ready to post on TikTok, Reels or Shorts.
Free demo, no account needed · Sign in with Google when you want to create your own videos.
From idea to finished video — all you do is review the content.
Type an idea or an interesting question. This step is free — no render cost yet.
Gemini writes the script (hook, body, ending, caption). You review and edit it before rendering.
AI picks the visuals, narrates, and adds subtitles + music. A complete vertical video in minutes.
The video below was generated fully automatically by TopicVid from a single title — the script, voiceover, visuals, subtitles and music are all AI-made.
Input title (everything the user typed):
"Why are soft drinks sold in cans while milk comes in cartons?"
Result: a complete 9:16 vertical video with an opening hook, two body segments, an ending, and a caption with hashtags — ready to post on TikTok, Reels, Shorts.
Try the interactive demo →No account needed to view the demo.
Built on Google Cloud infrastructure — no third-party dependencies.
Video, voiceover and script are all generated by Google models — consistent quality.
Nothing is auto-posted — you review and edit the script before hitting render.
Optimized for TikTok, Facebook Reels, YouTube Shorts — with subtitles and background music.
Gemini TTS narrates the script naturally — no recording or dubbing needed.
TopicVid is built and operated by its founder in Ho Chi Minh City, Vietnam.
Founder & CEO
Software engineer with 10+ years of experience building web products and cloud systems. Kai founded TopicVid in 2026 so that anyone can create quality short-form videos from a single idea — no video editing skills required.