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OneFileConverter
Video

Burn subtitles into a video

Captions that always show — on Instagram, WhatsApp or any player — drawn right into the picture.

Formats
MP4, MOV, WEBM +4
Max size
4 GB
Price
Free

Drop files here

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MP4, MOV, WEBM, MKV, TS, SRT, VTT · up to 4.00 GB per file

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Subtitle Converter & ResyncConvert SRT ↔ VTT and fix subtitles that are out of sync.Watermark VideoStamp your name or handle on every frame.

How to burn subtitles into a video

  1. Add your video and its .srt or .vtt subtitle file.
  2. Pick the text size and position.
  3. Click Burn and download the captioned video.
Is my video safe?

Yes. Your video is only used to create your result — it’s never shared and never used to train AI.

Which browsers work?

Recent Chrome, Edge and Safari 17+ work best. Firefox supports most tools; if a codec isn't available we'll tell you.

I don't have a subtitle file — what now?

Many video editors and captioning apps can export an .srt file. Making subtitles from speech automatically is coming soon here.

Subtitles are early or late — can I fix that?

Yes — shift them first with Subtitle Converter & Resync, then burn in the corrected file.