01 · The short answer
What a add subtitles to video online free does
To add subtitles to a video online, upload the file, choose the spoken language, generate a timed draft, review the words and select a caption style. AIVideoCaption works in the browser and exports either a captioned MP4 or SRT.
- Nothing to install
Open the browser workflow on your phone or computer.
- Automatic transcription
Start with a timed draft instead of typing every sentence.
- Visual caption styling
Choose a readable look and move captions where they fit your frame.
- Two useful exports
Download the finished MP4 or a separate SRT subtitle track.
02 · Step by step
How to use it
The useful part of automation is speed; the useful part of a human review is trust. This four-step workflow gives you both.
- 1Choose the video
Upload MP4, MOV, MKV or WebM from your device.
- 2Choose the language
Select the spoken language and writing style available for it.
- 3Correct and style
Review words, line breaks, highlights and placement.
- 4Export your result
Download a captioned MP4 for social media or an SRT for another platform.
03 · Make the right choice
A simple workflow with room for human review
AI saves the repetitive work, but you still make the publishing decisions. That combination is faster and safer than a one-click result you cannot inspect.
- Generate
Speech becomes timed subtitle text
The first draft handles the blank-page work.
- Review
You check names, numbers and line breaks
The human pass protects meaning and brand details.
- Design
You choose emphasis and position
The final captions should suit the video, not only the transcript.
04 · Best for
Add subtitles to the videos you already make
- Reels and Shorts
Create bold, readable captions for short vertical clips.
- YouTube videos
Export SRT or burn clean captions into the video.
- Course and coaching clips
Make explanations easier to follow in English and Indian languages.
- Client social content
Review the words and deliver a ready-to-post video plus subtitle file.
05 · Better results
Get a cleaner result on the first pass
- Upload the final cut
Later edits can move the voice and make the subtitle timing wrong.
- Use clear speech
Reduce loud music and overlapping voices before transcription when possible.
- Choose the real spoken language
For Hinglish, select the Hindi/Hinglish workflow instead of treating the audio as English.
- Preview at phone size
Captions that look small on a desktop preview will feel even smaller on a Reel.
06 · Choose your workflow
Online subtitles versus manual captioning
| Feature | Manual timeline | Platform captions | AIVideoCaption |
|---|---|---|---|
| Automatic first draft | No | Usually | Yes |
| Custom visual styles | Yes | Limited | Yes |
| Indian-language focus | You type it | Varies | Yes |
| MP4 and SRT | Depends on editor | Usually one | Both |
Product limits and plan details can change. Check current pricing before a larger project.
07 · FAQ
Questions creators ask
Can I add subtitles without installing an app?
Yes. AIVideoCaption runs in a modern browser on phone and desktop.
Which video formats can I upload?
The current workflow accepts MP4, MOV, MKV and WebM.
Can I use Hindi, Hinglish or Gujarati?
Yes. These and other supported Indian languages are available from the language picker.
Can I move the captions?
Yes. Adjust caption position and choose a style before export.
Is the free export watermark-free?
Yes, within the free plan's 3 transcription minutes and 2-minute per-video limit.
Can I download only the subtitles?
Yes. Export SRT when you need the timed text separately from the video.