YouTube Caption Generator

Every YouTube creator already has captions on their videos — they just did not write them. YouTube generates an automatic track for most uploads, and for many channels that track is the only one that exists.

It is better than nothing and worse than it looks. Automatic captions arrive with no punctuation and no capitalisation, which makes long sentences hard to read on screen. They mishear anything unusual: guest names, product names, acronyms, place names, prices, anything spoken quickly. And on some videos and in some languages, they never appear at all.

None of that would matter much if captions were only a viewer convenience. But YouTube reads its own transcript. It uses it to work out what the video is about, which searches it belongs in and what to suggest next to the people who watched it. A transcript full of misheard words is a description of a different video.

Uploading a corrected .srt fixes both halves at once — the captions viewers read and the transcript the platform indexes. It takes one upload per video, and it is the single cheapest thing most channels are not doing.

The same channel usually publishes two very different things, and they do not want the same caption treatment.

A landscape upload is watched deliberately, often with sound, sometimes on a TV. Captions there should be a toggleable track: viewers who want them turn them on, everyone else gets a clean picture, and YouTube gets the transcript either way.

A Short is watched in a muted, vertical, thumb-driven feed. There is no meaningful moment where someone stops to enable captions, and the player chrome sits over the bottom of the frame. Text has to be burned into the picture, large, high in the frame and short enough per line to read while the video is already moving.

Both come from the same transcription pass here — export an .srt for the long-form cut and a captioned MP4 for the Short taken from it.

The subtitle file is the deliverable, but the transcript underneath it is worth more than most channels use it for.

It is the fastest route to timestamped chapters, since you can see exactly where each topic starts. It is the raw material for show notes and a description that contains the words people actually search. Repurposed, it becomes a blog post, a newsletter section or the pull-quotes for a set of clips — all in the words you already said on camera.

For anyone running a channel and a site, that matters twice over: the video ranks on YouTube with an accurate transcript, and the written version ranks on the web where a video alone cannot.