SoCaptions

SoCaptions is an AI video caption generator built for short-form creators. Upload an MP4, MOV, or WebM, and Whisper-powered transcription creates word-level timing so captions highlight in sync with speech—without needing to learn a complex editor.

Choose a viral-ready caption style (like Bold Outline, Box BG, Emphasis, Karaoke, Cinematic, or Minimal), then fine-tune font, size, position, animation, and on-timeline word edits. When you’re done, export a burned-in MP4 with captions baked directly into the video for quick upload.

If you want to work with existing subtitle files, SoCaptions also offers free browser tools such as SRT/VTT/ASS converters, a reading-speed checker, a safe-zone preview, and Shorts length checking. There’s also a public REST API for captioning videos programmatically.

How do I add captions to a video in SoCaptions?

Upload your video (MP4, MOV, or WebM), let Whisper-powered transcription generate word-level subtitles, pick a caption style, and export a burned-in MP4 ready to upload.

Do the captions sync to the audio?

Yes—captions use word-level timing from the transcription, so the highlight follows the speech instead of relying on fixed blocks.

What caption styles can I choose?

Pick from preset looks such as Bold Outline, Box BG, Emphasis, Karaoke, Cinematic, and Minimal, then adjust placement and animation as needed.

Can I export captions in formats like SRT or VTT?

Yes. SoCaptions supports caption export and also provides free browser tools for converting between subtitle formats such as SRT and VTT.

Can SoCaptions caption non-English videos?

Yes. The transcription auto-detects languages, so you can generate captions for non-English clips.

How does pricing work?

You can try 5 minutes for free with no credit card. Paid plans are $5/month for 100 minutes, and you can cancel anytime.