SRT generator
Generate an editable subtitle draft, check the timing, and download an SRT file that works with common editors and platforms.
Last updated: July 24, 2026.
Video or audio to SRT
Use this when your main goal is a subtitle file, not a rendered video. SRT export is included in the free workflow.
Start freeNothing is uploaded or stored from this page. After signing in, choose the file again to start your project.
Overview
An SRT file is a simple subtitle format that stores caption numbers, start and end times, and the text viewers see on screen. Writing those timestamps manually is slow, especially when you are working with many clips. Filmizzy generates a timed caption draft from your media, lets you edit the words and breaks, then exports a clean SRT file.
An SRT block is just four things: a sequence number, a timestamp range in HH:MM:SS,mmm format, the caption text, and a blank line before the next block. That simplicity is why it works across almost every editor and platform — but it also means nothing catches a bad timestamp for you, so it's worth scrubbing through fast-talking sections once before you upload.
Real input and output
Original
Plain text: "Welcome back. Today we will fix subtitle timing."
Generated caption
Welcome back. Today we will fix subtitle timing.
1 00:00:00,000 --> 00:00:01,420 Welcome back. 2 00:00:01,420 --> 00:00:04,000 Today we will fix subtitle timing.
SRT stores the caption number, timestamp range, and visible text. Small timing fixes can make a big readability difference.
How it works
The page content is crawlable without logging in, and the generation workflow starts from a clear upload and review path.
Start from video or audio with clear speech and enough volume.
The transcript is split into timed caption lines instead of one long paragraph.
Review fast sections, pauses, spelling, punctuation, and line length.
Export the final file and upload it to your editor or publishing platform.
Use cases
Upload SRT files as closed captions and edit them later if needed.
Hand off subtitle files to clients without burning text into every draft.
Keep captions separate from lesson videos for easier updates and accessibility.
Comparison
An SRT file is a few kilobytes of text you can re-edit, re-upload, or swap out without touching the video itself.
Burned-in captions require a fresh render for every wording fix, which matters if you correct a caption after the video is already published elsewhere.
FAQ
A sequence number, a start and end timestamp in HH:MM:SS,mmm format, the caption text, and a blank line separating each block.
They are generated from the audio waveform, which is close but not guaranteed frame-perfect — review timing around fast speech before final upload.
Yes, it is plain text, so any text editor or subtitle tool can open and adjust it after export.
Basic SRT does not carry styling. If you need on-screen caption design, that requires burned-in/rendered video instead.
YouTube Studio, most video editors (Premiere, DaVinci Resolve, Final Cut, CapCut), and most course or LMS platforms.
The draft will still generate, but overlapping speech is where automatic timing is least reliable — review those sections manually.
Start now
Create timed subtitles, review the text, and download an SRT file for your editor or platform.