Overlay doctrine for captions in HyperFrames videos — the caption MODEL (drop / rail / embed) and the rule that captions are an OVERLAY composited on top of the film, never a reserved bottom band you shift content up to avoid.
Install
npx skills add heygen-com/hyperframes --skill captions-overlaynpx skills add heygen-com/hyperframes --skill captions-overlay -a claude-code -gnpx skills add heygen-com/hyperframes --skill captions-overlay -a codex -ggemini skills install https://github.com/heygen-com/hyperframes.git --path .agents/skills/captions-overlaygh skill install heygen-com/hyperframes captions-overlaygit clone --depth 1 https://github.com/heygen-com/hyperframes /tmp/heygen-com__hyperframes
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/heygen-com__hyperframes/.agents/skills/captions-overlay ~/.claude/skills/captions-overlay # Claude Code
cp -R /tmp/heygen-com__hyperframes/.agents/skills/captions-overlay ~/.agents/skills/captions-overlay # Codex, Cursor, Gemini CLI, Copilot, OpenCode