Audio or Script → Finished Video

O AI Video Generator
That Does the Whole Job — Free

Upload audio or type a script. AI transcribes or narrates it, matches every sentence to stock footage, burns in subtitles, and exports a watermark-free HD video. No camera, no editor, no credit card.

Generate a Video Free Entrar

Most "AI video" tools automate one step and leave you the rest. ZinAIStudio runs the entire pipeline — speech-to-text transcription, semantic stock footage matching, AI voiceover, subtitle burn-in, and HD export — in one automated flow. You bring the words; the generator does everything else.

How the AI video generator works

1
Start with audio or text
Upload an MP3/WAV recording — or skip the mic entirely and type your script sentence by sentence.
2
AI understands every sentence
Audio is transcribed with timestamps; scripts are narrated by a realistic AI voice. Each sentence becomes one scene.
3
Footage & subtitles, automatic
Every sentence is matched to relevant stock footage from millions of clips, and captions are burned in, perfectly timed.
4
Download everything
The watermark-free 1280×720 MP4 — plus every scene clip, the voice track, the SRT file, and your script.

Everything the generator handles for you

🎙️
Audio Transcription
Speech-to-text with sentence-level timestamps — your recording becomes a timed script automatically.
🗣️
Gerador de voz com IA
No recording? A realistic neural voice narrates your typed script with natural pacing.
🎬
Smart Footage Matching
AI reads the meaning of each sentence and finds the most relevant stock clip — not just keyword matches.
💬
Legendas embutidas
Captions rendered permanently into every frame, timed to the voice — readable with sound off.
✂️
Editor de cenas com um clique
Swap any clip from AI-curated alternatives. Only changed scenes re-render — edits take seconds.
📦
Exportação completa de arquivos
MP4, individual scene clips, voice track, SRT subtitles, and script — everything is yours to keep.

AI video generator — questions answered

What is an AI video generator?
A tool that creates complete videos automatically from audio or text: transcription or AI narration, stock footage matched per sentence, burned-in subtitles, and HD export — no filming or editing.
É realmente grátis?
Yes — unlimited videos, HD 720p, no watermark, no credit card. Every export includes the full asset bundle.
What can I upload?
MP3, WAV, or M4A audio up to 50MB — or no file at all: type your script and let the AI voice narrate it.
How long does generation take?
Around three minutes for a typical 60–90 second video, fully automated.
E se eu não gostar de um clipe?
Click the scene, pick from AI-curated alternatives, and only that scene re-renders. Iteration takes seconds.
Posso usar os vídeos comercialmente?
Yes. All stock footage is licensed for commercial use, and you own the final output completely.

Explore specific workflows

🎧
Áudio para vídeo
Turn any recording into a finished video.
📝
Texto para vídeo
Type a script, get a narrated video.
🎞️
AI B-Roll Generator
Build videos entirely from matched B-roll.
📄
SRT Generator
Get a timed subtitle file from your audio.

Pronto para criar seu primeiro vídeo?

Sem cartão de crédito. Gere seu primeiro reel em menos de 5 minutos.

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