Audio → Timed SRT File

Free SRT Generator
No Minute Caps. No Watermark.

Upload your audio. AI transcribes every word with timestamps and hands you a standard SRT subtitle file — plus a finished video with the same captions burned in. Free, no credit card.

Generate an SRT Free Sign in

Most "free" SRT generators cap you at 5–10 free minutes, then ask for a subscription. ZinAIStudio has no minute caps — upload your audio (up to 50MB per file), download the full SRT. And because the SRT is produced by our video pipeline, you also get a finished, subtitled HD video with it. Two deliverables, zero cost.

Audio to SRT in three steps

1
Upload your audio
MP3, WAV, or M4A — podcast segments, narrations, voice memos, lesson recordings.
2
AI transcribes with timestamps
Speech-to-text runs automatically, splitting at natural sentence boundaries with start/end times for every caption.
3
Download your SRT
A standard .srt file ready for YouTube, Premiere, DaVinci, or any player — plus the bonus subtitled video, voice track, and script.

Where your SRT file works

▶️
YouTube & Vimeo
Upload the SRT as closed captions — indexed by search and toggleable by viewers.
🎬
Premiere & DaVinci
Import the SRT straight into your editing timeline as a caption track.
💼
LinkedIn & Social
Attach captions to native video uploads for sound-off viewers.
🌍
Translation Workflows
SRT is the universal source format translators work from for multilingual captions.
♿
Accessibility
Provide captions for Deaf and hard-of-hearing audiences — and meet accessibility requirements.
🎧
Podcast Show Notes
The timed transcript doubles as a source for show notes and quotable snippets.

SRT generator — questions answered

How do I generate an SRT from audio for free?
Upload your MP3/WAV, let the AI transcribe it, and download the SRT from your project — no minute caps, no watermark, no credit card.
What exactly is in the SRT file?
Numbered captions with start/end timestamps, split at natural sentence boundaries — the standard SubRip format every major platform accepts.
Is there a length limit?
No per-minute caps. Files up to 50MB upload fine; for social clips, 60–90 seconds of audio is the sweet spot.
Do I also get a video?
Yes — the same pipeline produces a finished HD video with your captions burned in, at no extra step or cost.
What languages are supported?
The current speech-recognition model is English-optimised; other languages may transcribe with lower accuracy.

Related tools

💬
Free Subtitle Generator
Burned-in captions for any video.
🎧
Audio to Video
Your recording becomes a full visual video.
🤖
AI Video Generator
The complete audio/script-to-video pipeline.
📼
MP3 to Video with Subtitles
MP3 in, captioned video out.

Ready to create your first video?

No credit card required. Generate your first reel in under 5 minutes.

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