Upload video
Upload the video that should use your existing subtitle file.
Captn
ADD SRT TO VIDEO
Add SRT to Video Free and Export a Captioned MP4
Start by uploading a video, import your SRT or VTT file, sync the subtitles against playback, style the captions and export a captioned MP4 or cleaned subtitle file.
SRT import
VTT support
Captioned MP4
Sync timing
Style captions
SRT video project
Subtitles imported
How it works
Burn SRT subtitles into video in a few steps
This workflow starts with subtitles you already have. The job is to import, sync, style and export them with the right video.
Import SRT
Add your SRT file, or import VTT if your workflow uses that format.
Sync and edit
Adjust subtitle timing, fix text, split long lines or merge short blocks.
Style captions
Choose readable fonts, colors, outlines, backgrounds, placement and highlights.
Export result
Export a captioned MP4, or download the cleaned SRT/VTT file again.
Sync and repair
Import SRT, then fix what still needs work
Captn is useful when the SRT file exists, but the video still is not ready. Import the subtitles, review them against playback, fix sync issues, style the captions and export a publish-ready result.
Open the Editor- Import existing SRT or VTT subtitle files
- Edit every imported subtitle block in the browser
- Adjust start and end times against the video timeline
- Split, merge, delete, or add subtitle blocks manually
- Preview captions before exporting the MP4
- Export the edited subtitle file again if you need it
Export options
Export the synced subtitles with the video
The main decision is whether the imported subtitles should become part of the final MP4 or stay as a cleaned subtitle file.
Captioned MP4
Render the imported subtitles into the video after timing and style are checked.
Clean SRT
Export a corrected SRT file after fixing text, line breaks and timing.
VTT files
Export or import VTT for web players, learning platforms and browser video.
Style-preserved video
Use caption styling when the imported subtitle file needs to become a visual layer in the MP4.
Caption styling
Style imported SRT subtitles before export
Imported SRT text does not have to look plain. Pick a caption preset, tune fonts and colors, add outlines or backgrounds and preview the final caption style before rendering the MP4.
Imported captions can still be styled.
SRT to captioned video
Turn your subtitle file into a finished video
Upload the video and subtitle file together, then use the same project to style captions, export a captioned MP4, or download revised SRT and VTT files.
Add SRT to VideoUse cases
When an existing SRT or VTT file needs video cleanup
Use this page when the transcript work is already done somewhere else, but the subtitle file still needs syncing, styling, or export with the final video.
YouTube uploads
Add SRT subtitles to a video and export either a captioned MP4 or a clean subtitle file.
Online courses
Import lesson SRT files, fix timing issues and export cleaned subtitle files or captioned lesson videos.
Webinars
Bring in subtitle files from recorded webinars, repair sync and export a readable replay video.
Product demos
Import subtitle files for walkthroughs and turn them into polished captioned videos for clients or launches.
Translated videos
Import translated SRT or VTT files, check how they read on the video and export the final captioned version.
Social clips
Take an existing subtitle file and restyle it for short-form exports where captions must stay visible.
Screen recordings
Add imported subtitle files to tutorials and demos, then sync them against the recording before export.
FAQ
Questions before you add SRT subtitles?
Quick answers about adding SRT to video for free, syncing subtitles, styling captions, and exporting a captioned MP4.
Can I add SRT to a video for free?
Yes. You can start free, upload a video, import an SRT file, edit and style the subtitles, and export the result. Free upload and export limits apply.
Can I burn SRT subtitles into an MP4?
Yes. Captn can render imported subtitles directly into the video so the captions stay visible on any platform.
Can I style subtitles from an SRT file?
Yes. Use fonts, colors, outlines, shadows, background boxes, placement controls and word highlights before exporting the video.
Can I export the edited SRT file again?
Yes. After editing and timing fixes, you can export a clean SRT file from the same project.
Can I add an SRT file to a video?
Yes. Upload your video, import the SRT file, check the subtitles against playback, then export a captioned MP4 or cleaned subtitle file.
Can I fix SRT timing if it is out of sync?
Yes. You can adjust subtitle block timing, split or merge blocks, edit text and preview the result before export.
Can I import VTT files too?
Yes. Captn supports importing SRT and VTT files, then exporting a captioned video or cleaned subtitle files.
Will the preview match the exported video?
Captn is built around preview and export parity, so caption placement, wrapping, styling, and highlights are designed to stay aligned.
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