How To
How to Add Captions to Video
Upload, transcribe, style, and export — captions and subtitles added to your video in under 3 minutes.
Step-by-Step Instructions
- 1
Upload your video file
Drag and drop your video into VideoCaptions.AI. The tool accepts MP4, MOV, WebM, and other common video formats. Your video stays on your device — only audio is sent for cloud AI transcription.
Tip: Trim your video to the relevant section before uploading for faster transcription and a cleaner editing experience.
- 2
Cloud AI transcribes your audio
The tool extracts audio from your video and sends it to our cloud AI for transcription. You get word-level timestamps for every spoken word in seconds — fast, accurate, and supporting 99+ languages.
- 3
Style your captions
Choose from 16 animation effects including fade, bounce, glitch, karaoke, and typewriter. Pick a font, set colors, adjust caption position with drag-and-drop. See changes in the live preview instantly.
Tip: Start with the flash category and scale-up effect for bold social media captions. Switch to karaoke for longer, dialogue-heavy content.
- 4
Export your captioned video
Hit export and choose your resolution — from quick preview to 4K. The tool renders an MP4 with captions burned in. The file downloads automatically with no watermark and no branding.
01
Why Add Captions to Your Videos?
Adding captions and subtitles to videos has shifted from an accessibility nice-to-have to a content strategy essential. The data is clear: captioned videos with subtitles earn more watch time, more engagement, and more shares across every social platform. According to Meta for Business (2019), captioned video ads increase view time by 12%. On Instagram, 40% of Stories are watched without sound (Instagram internal data). TikTok's own creator guidelines recommend captions for maximum reach. Beyond social media metrics, captions make your content accessible to the 466 million people worldwide with hearing loss (World Health Organization), to viewers watching in noisy environments, and to non-native speakers who rely on text to follow along. Search engines also benefit from caption text — Google and YouTube index spoken content in captions, improving your video's discoverability. Whether you create content for marketing, education, entertainment, or personal sharing, captions make it better.
02
What Makes VideoCaptions.AI Different
Most caption tools either require uploading your entire video to the cloud — raising privacy concerns — or produce basic SRT files that give you no visual control. VideoCaptions.AI takes a different approach. Your video stays on your device. Only the audio track is temporarily sent to our cloud AI for transcription, then automatically deleted. The visual editor lets you drag captions, adjust timing, change fonts and colors, and preview 16 animation effects in real time. When you export, the tool renders an MP4 with captions composited directly into the video frames using Remotion. The result is a broadcast-quality captioned video that plays correctly on any platform without depending on external subtitle files or platform-specific caption rendering. There are no watermarks on any plan. A free account gets you started in seconds, and editing plus export all happen in your browser.
Frequently Asked Questions
Everything you need to know before you start.
Can't find what you're looking for? Contact us
Yes. Exported videos have no watermark, no branding, and no visual artifacts on any plan. A generous free plan lets you get started, and paid plans are available for heavier usage.
A free account is all you need to get started — quick signup, no credit card required. Your projects are saved locally in your browser's storage for convenience and privacy.
MP4, MOV, WebM, and most common video formats are supported. The tool uses your browser's native media decoders, so any format your browser can play can be captioned. Audio-only formats like MP3 and WAV are also accepted.
Yes. After AI transcribes your video, you have full editorial control. Edit any word, fix typos, remove filler words, split or merge word groups, and adjust timing. Changes are reflected in the live preview immediately so you can see exactly how your edits look.