SubtitleRocketCaption tutorial
How to Add Subtitles to Video in Five Simple Steps
Try the browser editor with a demo, tidy the captions, choose a readable style, and export a captioned MP4.
The simplest way to add subtitles to video is to start with the words, make them easy to read, and burn them into the final MP4. SubtitleRocket keeps that whole editing flow in the browser. You can open the editor, load the demo, change its captions, and preview the result without signing up.
Translate and Animate are marked “coming soon” in the editor. Highlight and emphasis choices are static styles, not true per-word karaoke sync. AI translation across 50+ languages is included with Max, not the free editor flow.
00 / Before you start
What do you need to add subtitles?
A short spoken clip and a supported browser are enough. Keep these points in mind:
- A quick demo. Try demo loads a sample clip with captions instantly. Nothing is generated, uploaded, or sent away for this walkthrough.
- Your own clip, when ready. Choose a real video and SubtitleRocket generates editable captions from its speech. The video stays in the browser; only its audio is sent for transcription.
- No account for editing. You can try, edit, style, and preview without signing up. A six-digit email code is only needed for a watermark-free export or plan management.
- A supported export browser. Rendering happens on your device in Chrome, Edge, or Safari 17 and newer. Firefox export is not supported.
01 / Open the editor
Open the editor and click Try demo
Go to the SubtitleRocket editor at /app and click Try demo. The sample video and its finished caption track appear immediately, so you can explore without waiting for transcription. To caption your own clip instead, choose a video file; SubtitleRocket extracts the audio, generates captions from the speech, and leaves the video itself in your browser.
02 / Clean up the words
Correct the caption text and timing
Open the Subtitles panel and play the clip from the beginning. Fix names, numbers, punctuation, and any speech that was misheard. Select a caption when you need to adjust where it starts or ends.
Keep each caption short enough to understand at a glance. Break a long thought at a natural pause, then replay the transition so one line does not disappear before the next phrase is spoken.
03 / Pick a readable look
Choose a style that stays readable
Open Styles and pick a template that fits the footage. Use Font and Layout to adjust size, contrast, and position. A static highlight color can add emphasis, but it does not follow each spoken word like karaoke. Test the busiest part of the clip before settling on a look.
04 / Preview the clip
Preview the entire captioned video
Watch once with sound and once muted. The preview should answer four practical questions:
- Can every caption be read on a phone without pausing?
- Do the words appear and disappear at natural points in the speech?
- Does the text avoid faces, products, and the lower controls used by Shorts, Reels, and TikTok?
- Does the chosen style remain clear over both bright and dark frames?
If a line feels crowded, shorten the caption before making the type smaller. Readability matters more than fitting a complete sentence on screen.
05 / Export
Export a captioned MP4
Open Export when the preview looks right. Rendering is fully client-side, so the finished MP4 is created on your device. Free includes 90 transcription minutes per month, clips up to 15 minutes, and a 720p export with a small watermark.
For a clean 1080p MP4, Pro is $7 per month or $56 per year. It includes 1,000 transcription minutes per month, clips up to 30 minutes, SRT and VTT export, and saved style presets. Max is $15 per month or $132 per year, with 3,000 minutes, clips up to 60 minutes, and AI translation across 50+ languages.
Caption a clip in your browser
Start with the add-subtitles tool, then open the editor.
Review the focused tool page, load the instant demo, or choose your own clip and take it from speech to a captioned MP4.
Open the editor