Start with SRT or your own words
Bring an existing subtitle file into the project, then correct individual captions. You can also start from an empty subtitle list and write only the lines the video needs.
Add subtitles to your video
Give every line its place on the screen. Import an SRT, generate captions from speech, or add your own text with precise start and end times.
- Up to 3 minutes
- 100 MB per video
- Editable SRT and subtitled MP4
0 s3 s6 s9 s12 s
Video
Selected footage
Text
Caption at 3 s
Example timing. Add your own audio or text in the editor.
Self-made sample with synthetic audio and hand-written captions. Use a video with speech to try automatic transcription.
How to add subtitles to a video online
Open a video in the subtitle editor
Upload a video from your device or import a public TikTok link. Use Read source captions when available, or generate subtitles from spoken audio.
Add and edit the timed captions
Import SRT, write captions manually or revise the generated lines. Set the start and end times, preview the source video, and choose a caption style.
Download SRT or burn captions into MP4
Save the subtitle file for another editor, or enable Burn subtitles into video and export the creation pack. Play the completed MP4 to review the final appearance.
Captions you can change line by line
Choose text styling and timing
Use a clean outline, bold captions or a dark box. Source subtitles follow your cuts, while extra captions in Timed inserts use the finished-video timeline.
Keep a reusable subtitle file
Download an SRT containing the edited text and timings. Burning captions into the MP4 makes them visible when a player or social platform does not load a separate subtitle file.
Before you start
The current editor accepts videos up to 180 seconds and 100 MB. Cloud imports, AI processing and exports require sign-in. Portrait video exports use a 720 × 1280 canvas. Only upload material that can be public: the current demo uses a public asset bucket.
Frequently asked questions
Can I add subtitles without using speech recognition?
Yes. Import an SRT file or type captions manually. Editing and local SRT download do not require automatic speech recognition.
Can I add text at a specific second?
Yes. Use Timed inserts to enter caption text and its start and end seconds on the finished video. This is useful for a label or note that was not spoken in the source.
What subtitle formats are supported?
The editor imports and downloads SRT files. Imported SRT files must be no larger than 128 KB, and captions must stay within the video duration.
Can I change the subtitle language?
Yes. Choose a target language and translate existing captions, or generate captions with translation enabled. Review the result before downloading SRT or exporting MP4.
Are captions visible in the downloaded video?
Yes, when Burn subtitles into video is enabled during export. You can also download SRT separately to keep the captions editable in another application.
