Works on: iOS, Web, and Android
Import a video file
- iOS
- Web
- Android
Choose your file
Browse your Photos library or Files app to select the video you want to edit. Captions supports MP4, MOV, and M4V formats.
Import audio only
If you have a voiceover, podcast clip, or audio recording you want to turn into a captioned video, you can import audio directly. On iOS: Tap + → Upload → select an audio file (MP3, M4A, AAC, WAV). Captions creates a project with a waveform background you can style. On Web: Drag and drop an audio file into the upload area or use the upload button to select one.Import from a URL
On iOS and Web, you can paste a YouTube or other video URL directly to create a project from an existing video — no download required. Tap + → Import URL and paste the link.Supported formats
| Type | Formats |
|---|---|
| Video | MP4, MOV, M4V |
| Audio | MP3, M4A, AAC, WAV |
File size and length limits
- iOS / Android: Up to 60 minutes per file
- Web: Up to 60 minutes per file
What’s next?
AI Edit
Apply AI Edit to turn your uploaded footage into a polished, caption-ready video automatically.
Add Captions
Generate captions for your imported video with one tap.
AI Shorts
Extract the best moments from a long video automatically.
Record with Teleprompter
Record directly in Captions instead of importing.

