Caption a long video, free — with no time limit
Search for a caption tool and almost every one meters you by length: two minutes here, ten there, or a credit balance that empties. AI Caption Cut has no length limit, because it captions and renders on your own device instead of renting a GPU by the minute.
Why other tools cap video length
The reason is architectural, not generous. Cloud caption tools rent GPUs by the minute, so every minute of your video costs them money — which is why their plans meter you by video length, upload size or credits. AI Caption Cut renders on your own device, so a longer video costs us nothing. There is no meter to run.
That is why the cap tracks the price so neatly: the limit is not a product decision about what you need, it is their invoice.
What you can caption
Podcasts and interviews, webinars and talks, tutorials and course lessons, sermons, lectures, long-form YouTube — there is no length at which the app refuses.
You can also caption a long video and then cut it down: Auto-cut removes silences and filler words across the whole timeline in one pass, which is usually what a 40-minute recording needs before it becomes clips.
The honest trade-off
On-device is free and private, but it is your processor doing the work. A cloud service with a warehouse of GPUs will transcribe a 1-hour video faster than your laptop will. Here, a long recording takes real minutes and the tab needs to stay open.
In exchange: no upload, no account, no per-minute bill, no cap, and it keeps working offline.
How it works
Open the site and pick your video — it is read from your disk, not copied anywhere. Captions are generated on-device with word-level timing, so karaoke highlighting lines up. Style them, cut the dead air, and export an MP4 back to your disk.
Free exports are 720p with a small watermark and are unlimited. A one-off ₹39 removes the watermark at 1080p; ₹59 goes up to 4K.
Questions
What is the maximum video length AI Caption Cut can caption?
There is no maximum. Length, file size and number of videos are all unlimited, including on the free tier, because your video is processed on your own device rather than on a metered server.
How long does it take to caption a 1-hour video?
It depends on your device, because the speech model runs on your own processor rather than in the cloud. A long video takes real minutes and the tab needs to stay open. It is slower than a GPU service — and it is free, unlimited, and nothing is uploaded.
Do I need to upload my long video anywhere?
No. The file is read straight from your disk and rendered by your browser. It is never uploaded, which also means there is no upload wait and no file-size limit.
Is it really free for long videos?
AI Caption Cut is free to use with unlimited 720p exports that carry a small watermark. Removing the watermark is a one-off payment per video — ₹39 for 1080p, ₹59 for up to 4K. There is no subscription and no account.
Try it on your own video
Nothing to install, no account, and your video never leaves your device. Free exports are unlimited.
Caption my video — free