Tortured by Video Subtitling, I Built a Truly Free Auto-Subtitle Generator

In my two years of creating content, the most painful part wasn't brainstorming topics or even video editing—it was subtitling.

Every time I finished a ten-minute talking-head video, I had to suffer through over an hour in Premiere Pro just for the captions. I’d manually slice the clips, listen to each sentence, and scrub back constantly when I misheard something. Later, when a bunch of so-called "AI transcription" tools popped up, I excitedly tried a few, only to realize they were full of traps. They either limited you to 3 free minutes, or put the basic .srt export behind a $9.9 paywall.

Since I couldn't find a pure, clean, and genuinely free solution, I decided to scratch my own itch and build one.

Why Do Big Tech Auto-Captions Always Feel "Off"?

To be honest, the built-in auto-captions in Premiere and CapCut are decent, but they will absolutely drive you crazy in specific scenarios. For instance, if I mix a few technical terms into my speech, or if there's a slight background hum, the built-in engines immediately start hallucinating.

Worse yet, many software tools don't optimize sentence segmentation for long conversations. The resulting subtitles are either way too long and bleed off the screen, or awkwardly chopped in half. The time I spent fixing these errors in post-production was often longer than if I had just typed them manually.

I wanted something that ran on the best open-source models (like improved versions of Whisper), understood mixed-language contexts, and cleanly spit out standard SRT files without any fuss.

So, I Whipped Up This Little Tool

I built a dead-simple web app. At first, it was just for me and a few creator friends. The core logic is incredibly straightforward:

1. Drop in your audio file, no matter how long.
2. The backend runs a full-throttle transcription engine.
3. You get a highly accurate SRT file with perfect timestamps.

There are no forced logins, no "first 5 minutes free" gimmicks, and no paywalls blocking the SRT export button. If you frequently need to convert audio into subtitle files or organize long meeting transcripts, you might want to try this little site I put together: freeaudiototext.com.

My Selfish Reason

Opening up this tool for completely free was also an experiment. I was curious to see how many people were still enduring terrible basic tool experiences in an era where AI compute is getting cheaper every day.

Of course, if you only occasionally edit a casual vlog, CapCut's auto-captions are perfectly fine. But if you're a hardcore content creator with severe OCD like me—sick of bad sentence breaks, constant typos, and being nickel-and-dimed by platforms—give it a spin.

A quick tip: when making subtitles, it's always best to export the audio track first. Video files are huge, slow to upload, and eat up memory. Dropping your video into an editor, exporting an MP3, and then generating the subtitles is by far the most efficient workflow.

Image prompt: A clean, minimalist workspace desk, the monitor displaying a code editor and a video timeline, soft lighting, capturing a sense of solitary focus during late-night work. --ar 16:9