Burn subtitles into your video
A subtitle file sitting next to a video only works where a player reads it. Instagram, a WhatsApp forward or a screen at the back of a room will all show your video with no captions at all — so the captions have to be part of the picture. That burn happens here, in the browser, on your own machine, and you can restyle the subtitles on the way through instead of hardcoding plain white text.
How to burn subtitles into a video
"Burned in" means the words become part of the picture — pixels in the frame, not a separate track a player can switch off. That is what every social platform needs, because a reel has nowhere to put a sidecar subtitle file.
Open the editor and add your video. Go to aicaptioncut.com and drop the file onto the page. It is read from your disk rather than uploaded, so there is no size limit and nothing to wait for before you can start.
Get the words in — generate them, or import a file you already have. Press Generate captions to transcribe on your own device, or, if you already have a subtitle file, use Import in the captions panel and give it your .srt, .vtt or .txt. Imported cues keep their existing timings.
Style them, because burning in is permanent. Set the font, size, colour, outline and position, and check them against the busiest part of your footage — once rendered they cannot be turned off or restyled. On vertical video keep them clear of the platform UI along the bottom and right edge.
Export the MP4. Press Export. The video is re-encoded in the browser with the captions drawn into each frame and saved to your downloads folder. Keep the original file — that is your only way back to an unburned version.
How to do it
Open the editor, add your video, and import the .srt or .vtt from the Captions panel. The lines land on the timeline with their timings intact, and from there they are ordinary captions: pick one of 62 styles, change the font, the size, the colour and the position, or leave them as they are.
Then export. The captions are drawn into every frame by the same renderer that draws the preview, so the file you download looks exactly like the picture you were watching.
Restyling is the part most burners skip
Most subtitle burners hardcode what the file says in a default face at a default size, which is fine for accessibility and wrong for anything meant to hold attention. If the captions are part of the edit rather than a legal requirement, they should look like it.
Here they can be karaoke-highlighted word by word, set in a display face, given an outline that survives a bright background, or placed behind the speaker so they pass behind their shoulder. All of it is applied to the subtitles you imported — you are not retyping anything.
What it costs, plainly
Editing and export are free and unlimited at 480p, with a small aicaptioncut.com mark in the corner. Removing that and exporting in HD is a one-off payment for that video, in your own currency, with no subscription.
Several browser-based subtitle burners give away watermark-free HD, and if a clean 1080p burn of plain captions is all you need, one of those will serve you better than this will. What you get here instead is the styling, the editor around it, and Hindi captions that come out in Roman letters rather than Devanagari.
Hardcoded, burned-in, open captions — all the same thing
These three names all mean captions painted into the pixels rather than carried alongside them. The opposite is a soft or closed caption: a separate track a player can switch off, which is what an .srt is until somebody burns it.
Burned-in captions cannot be turned off, cannot be translated by the platform, and cannot be read by a search engine — which is why the usual advice is to burn them for social video and keep the .srt for YouTube, where the player uses it and Google reads it.
Questions
Do I need an .srt file to start?
No. If you have one, import it and skip the transcription. If you do not, the editor generates the captions from the audio on your device and you go straight to styling them.
Is the video uploaded to burn the captions?
No. The video is read from your disk, drawn frame by frame in the browser and encoded there, then saved back to your machine. The render uses your own processor, which is also why there is no queue.
Will the captions look the same in the exported file?
Yes — the preview and the export run the same renderer, so what you set is what is encoded. That is not true of every tool: some preview with the browser’s text rendering and burn with something else.
Can I burn subtitles into a long video?
Yes, with no length cap. Rendering a long video takes time on your own machine and does better on a laptop than a phone, but there is no upload and no per-minute charge.
Can I keep the .srt as well?
Yes. Export the MP4 with the captions burned in, and download the subtitle file separately — useful when the same video goes to Instagram, where captions must be in the picture, and YouTube, where a subtitle file is better.
Can burned-in subtitles be removed later?
No. Burning writes the words into the pixels, so removing them means re-exporting from the original video without them. Keep the file you started with — that is the only undo there is, in any tool.
Do social apps accept SRT files?
No, and that is the reason burning exists. Instagram and Snapchat show your video exactly as uploaded, so a subtitle file sitting beside it is ignored. YouTube, Vimeo and LinkedIn do read an .srt, which is why the usual answer is to burn for social and keep the file for YouTube.
Does burning subtitles reduce the video quality?
The video is re-encoded, so there is some loss in principle — the same as any export. It is encoded at the resolution and bitrate you pick rather than being re-compressed twice, and at 1080p the difference is not something you will see on a phone.
Is HandBrake better for hardcoding subtitles?
HandBrake is free, powerful and burns an existing .srt or .ass reliably — if you already have a subtitle file and want the words on screen in a default face, it does that well. What it will not do is generate the captions from speech, style them, or animate a word at a time. This will, and it needs no install.
Related free tools
Try it on your own video
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