Captions & Subtitles

What is Auto Caption?

Auto captioning is the process of automatically generating text captions from spoken audio in a video using AI speech recognition, without manual transcription.

Auto Caption Explained

Auto caption technology uses automatic speech recognition (ASR) models to convert spoken words into timed text overlays. Modern auto caption engines achieve 95%+ accuracy in English and support 50+ languages. The generated captions include word-level timing for animated text effects like word-by-word highlighting. Auto captions are essential for accessibility (deaf/hard-of-hearing viewers), engagement (85% of social media video is watched without sound), and SEO (search engines can index caption text). BlitzReels auto-generates captions with word-level sync across 50+ languages and offers 30+ visual styles for the caption overlay.

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BlitzReels provides the tools and automation to put these concepts into practice.

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Related Terms

AI Captions

AI captions are automatically generated text overlays synchronized to spoken audio in a video, created using speech recognition AI that transcribes audio and places text with word-level timing.

Word-Level Sync

Word-level sync is a captioning precision where each individual word is timed to appear or animate at the exact moment it is spoken in the audio, rather than showing full sentences at once.

Caption Styles

Caption styles are visual design presets that control how text captions appear on screen, including font, color, size, position, background, and animation effects.

Transcription

Transcription is the process of converting spoken audio from a video or audio recording into written text, producing a verbatim or edited text document representing the spoken content.