AutoCaption

AutoCaption is a web-based tool that automatically generates and styles captions for short-form video content. Users upload a video, and the platform transcribes and captions it, supporting transcription and translation in over 100 languages. Captions can be customized with different fonts, colors, animations, sizing, and word-by-word emphasis, and users can save preferred styles as reusable templates for future videos. A timeline editor allows fine-tuning of caption timing after the automatic pass. The tool supports major video formats including MP4, MOV, AVI, MKV, and WebM, with uploads up to 4K resolution, and can auto-resize a single video for multiple platforms, TikTok, Instagram Reels, YouTube Shorts, and LinkedIn, in one export. Most videos are captioned in under 10 seconds, with longer content taking a few minutes. AutoCaption is built for social media creators, marketers, and video teams who need fast, on-brand captions without manual subtitle editing. It runs on a subscription model with a free tier and paid plans that unlock higher-quality exports, more templates, and team collaboration features; an API is available for advanced users who want to integrate captioning into their own workflows. Since captions are AI-generated from audio, accuracy can vary with background noise or heavy accents, and results may need manual review before publishing.