How do I convert audio to video?
Upload your audio file and ZinAIStudio does the rest automatically: it transcribes the speech, matches every sentence to relevant stock footage, burns in timed subtitles, and exports a finished MP4 with your original audio on top — no video editor needed.
What is an audio to video converter?
An audio to video converter turns a sound-only file like MP3 or WAV into a video file (MP4) that platforms like YouTube, Instagram, and TikTok can actually play, since none of them accept audio-only uploads. ZinAIStudio goes further than a basic wrapper — it adds matching stock footage and burned-in subtitles instead of a static image.
What audio formats are supported?
MP3, WAV, and M4A files are supported. Maximum file size is 50MB.
Does converting audio to video reduce audio quality?
No. Your original audio track is preserved and layered onto the final MP4 without extra lossy re-encoding, so there is no audible quality loss — the same voice recording, just wrapped in a video file with visuals and subtitles.
How accurate is the transcription?
Accuracy is typically 90%+ for clear English audio. You can edit the transcript before generating the video.
How much stock footage is available?
We pull from a library of over 3 million free, commercially-licensed clips.
Can I edit the video after it's generated?
Yes. After generation you can swap individual scene clips, re-render, and download the updated video.
Can I post the video on YouTube, Instagram, or TikTok?
Yes. The exported MP4 has no watermark and all stock footage is licensed for commercial use, so you can publish it on any platform or use it in ads.
Is it really free?
Yes — create an account and generate videos for free.