Auto Subtitle Generator – Add Captions to Video Online
Upload a video and turn speech into on-brand subtitles. Automatically generate captions, customise fonts and motion with creator-style themes, then burn subtitles into your video or export files for other editors.
Drop a video file here.
More AI caption and transcription tools from Cinemon
How to Add Captions to Video Online
Generate and add subtitles to your videos in three simple steps.
1. Upload Video
Select your video file or drag and drop it into the upload area. We support MP4, MOV, WebM, and MKV formats up to 1GB.
2. Auto Transcribe
Our AI automatically transcribes the audio in your video. Choose from different caption themes to match your brand style.
3. Export Video
Download your video with the subtitles burned in (hardcoded) directly in your browser.
Frequently Asked Questions
Everything you need to know about generating subtitles.
How does the auto subtitle generator work?
Cinemon uses state-of-the-art AI speech recognition running entirely in your browser to analyze the audio track of your video and convert it into text with precise timestamps.
Are the captions hardcoded into the video?
Yes! By default, the captions are 'burned in' to your video when you export, meaning they will be permanently visible and perfect for social media platforms like TikTok, Instagram Reels, and YouTube Shorts.
Is my video uploaded to your servers?
No. Everything runs locally in your browser. Your video files and transcripts never leave your device, ensuring complete privacy and security.
What video formats are supported?
We support common video formats including MP4, MOV, WebM, and MKV. As long as your browser can read it, we can process it.