Caption Animation — effect skill for captions & subtitles

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Word-timed TikTok captions in Remotion or CSS: per-word pop, active-word highlight, 9:16 safe areas, sidecar SRT/VTT.

What it does

A how-to skill for word-by-word captions on vertical video. It normalizes Whisper output (@remotion/install-whisper-cpp with token-level timestamps, or a cloud STT) or an existing SRT into {text, startMs, endMs} tokens, pages them 1–4 words at a time with createTikTokStyleCaptions(), and animates a spring pop plus an active-word highlight in Remotion, with a plain CSS variant for web players. The reference adds an SRT parser, an SRT/VTT emitter, per-platform safe-area numbers and a stills-first verify loop, and it refuses to fake word timing by splitting lines evenly. It builds on Remotion's own caption packages, so it overlaps remotion-dev/remotion-captions; the files end with promotional links to the publisher's hosted iart.ai agent.

Use when

Not for

Install

Models it drives: whisper

Used for

More captions & subtitles skills

Run the generation on varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.