Video & Animation

Back every sentence of a video's narration (audio/lines.tsv) and every screen it shows with a citation into the pinned source code (role/path:line@sha) or a docs URL, mark what is visible in the UI versus backend-only, flag restricted or unreleased features, and cut or rewrite anything unbacked; writes the video's TRUTH.md and checks it with truth_check.py. Use it whenever a script or narration is drafted or edited, before voice is generated, before a build, when someone asks "can we say this?", "is this true?", "does the product really do X?", when a reviewer asks for a feature or a claim the product may not support, and when a source document (pitch deck, PRD, marketing page) makes claims the video wants to repeat.

Extract, once per product, everything every video of it reuses and write it to kit/ and product.yaml (design tokens, font subsets as woff2, icon subsets as SVG from the product's own icon packages, logos in light, dark and app-tile variants from the repo, a fictional cast proposed once for veto and then frozen, the canonical-names map, pronunciations, banned terms and the read-only tool list). Use it when a product is set up or its kit is missing or incomplete, when a video needs an icon, font or logo that is not in kit/ yet, when someone asks for demo names, fake customers, phone numbers or emails, when a brand word is mispronounced or an old product name shows up, and when checking that demo data is fictional.

Check a rendered product video before anyone else sees it: worker-pattern flicker, black frames, loudness and true peak, clipping, clicks at clip edges, overlapping narration, speech to text against the script, banned terms and legacy names, camera zoom, contact sheets, frame strips at transitions and parity against the approved version; then write qa/REPORT.json, the only thing deliver.py accepts. Use it after every HyperFrames render, whenever someone asks "is the render clean", "QA this", "check the video", "check the audio", "why does it flicker", "there is a click", "compare v3 with v2", "did the approved part change", or before showing, sending, uploading or delivering any MP4, even when the request does not say QA. Also use it to triage a defect a reviewer reported in a render.

TikTok竞品洞察分析工具，实时监测竞品流量效果、快速拆解对标竞对作品、精准拆解透视竞品流量及策略、高效搭建关键词库，适用于TikTok品牌方、创作者等进行竞品分析、流量优化和关键词研究。提供3个能力①关键词搜索（可按点赞/相关度排序、发布时间筛选）②博主作品获取，按主页链接或用户名批量获取公开作品列表，支持最新/最热排序 ③视频评论抓取，按视频链接或作品 ID 获取评论内容、评论者与互动数据，输出结构化 JSON（含作者、互动数据、标签、链接）。

Grok Build only. Turn a 2D character still into denser animation sprites via imagine_text_to_image base → imagine_image_to_video (6s/10s run-in-place) → ffmpeg frames → magenta chroma-key → dense sampled strips/grids/GIFs. Use when the user wants video-to-sprite, smoother run/walk cycles, or denser intermediate poses. Prefer generate2dsprite for crisp production pixel sheets. Triggers on "video to sprite", "imagine_image_to_video sprite", "dense walk cycle", "smooth run animation from video".

Call the xAI API (Grok) from this app's server code using the injected XAI_API_KEY: chat/LLM features, image and video generation (Imagine), and voice (text-to-speech). Use when the app needs any "AI" / "assistant" / "chatbot" / "Grok" functionality, runtime image/video generation, or speech. Triggers on "AI", "LLM", "chatbot", "assistant", "Grok", "xAI", "generate text", "summarize", "generate image", "AI video", "voice", "text to speech", "TTS", "OpenAI" (use xAI instead).

Share-link previews and app identity for apps on *.grok.me: the injector-owned og:image card, the SVG favicon, and PWA icons for installable apps. Use when scaffolding, renaming, or restyling the app — and for share / unfurl / OG / Twitter card questions. A custom 1200×630 card from the app's own art is the default — games of every kind (DOM board/word games included), whimsical apps, creative tools, and brand-forward pages; only plain utilities keep the placeholder. Always run the brand-asset pass as a `task` subagent and never wait for it. Triggers on "share", "rename", "app name", "OG", "Open Graph", "twitter card", "unfurl", "og:image", "og:type", "x:game:image", "x-banner", "link preview", "social card", "thumbnail", "preview image", "favicon", "app icon", "PWA", "manifest", "installable", "home screen", "SEO", "meta description".

Official Three.js API and TSL (Three.js Shading Language) reference for LLM code generation. Load when writing or debugging three.js / WebGL / WebGPU / custom materials / shaders / GLTF / advanced three APIs beyond basic game loop/controls. Prefer building-games for game correctness (loop, WASD, camera, orientation); use this skill for full API/TSL depth. Triggers on "three.js", "threejs", "WebGPU", "TSL", "NodeMaterial", "shader", "GLTF", "MeshStandard", "OrbitControls", "WebGLRenderer".

How to use the Imagine tools in Grok Build: imagine_text_to_image, imagine_image_to_image, imagine_reference_to_image, imagine_text_to_video, imagine_image_to_video, imagine_reference_to_video, and render_file for chat previews. When to build a visual with code instead of generating it, prompt-craft, reference-first handling of real people, factual grounding, and asset-consistency. Load this whenever generating or editing an image or video is on the table. Tool-usage-driven, not triggered by a user merely mentioning images.

Peer-to-peer realtime multiplayer over WebRTC data channels: every user of the deployed app connects directly to every other user (full mesh), the server only brokers the handshake at /api/rtc. Lowest possible latency, zero per-message server cost. Use for 2-8 player co-op/casual realtime: shared cursors, drawing, party games, casual action. Triggers: p2p, peer to peer, webrtc, low latency multiplayer, direct connection.

Use Neon Postgres (the database) in this TanStack Start app. Use when the app needs to store or query data, persist state, or keep per-user data. Triggers on "database", "Postgres", "Neon", "save data", "store data", "persist", "tables", "SQL", "query", "migrations".

Generate and postprocess 2D game sprites and animation sheets: pixel-art characters, NPCs, creatures, spells, projectiles, impacts, props, summons, and transparent PNG/GIF exports. Use when building browser games that need real sprite sheets (not code-drawn placeholders), matching a map art style, or producing magenta-background sheets for chroma-key cleanup. Triggers on "sprite", "sprite sheet", "animation sheet", "pixel art character", "walk cycle", "attack animation", "projectile sprite", "2D game asset".

Generate production-oriented 2D game maps with `imagine_text_to_image`: RPG/top-down maps, side-scroller parallax stages, tilemaps, layered raster maps, prop packs, collision zones, and walkable areas. Use when building browser games that need real map art (not pure code-drawn tiles), layered props, or map collision metadata. Triggers on "map", "level", "stage", "tilemap", "overworld", "dungeon", "side scroller background", "prop pack", "2D map".

Deep guide for CHARACTER IDENTITY across images: turnarounds (front/side/ back), state and damage variants, palette swaps, equipment changes, and same-character-in-context sets. Use whenever generating character turnarounds, character sheets, variants of an existing sprite, or any same-subject multi-image set. Complements game-asset-core.

Deep guide for game ANIMATION assets: motion cycles, action keyframes, effect sequences, and animation sprite sheets — built around a video-first pipeline. In this app-builder sandbox, execute via the video2dsprite / generate2dsprite skills (magenta + scripts), not ad-hoc ffmpeg. Use whenever generating anything that moves: walk/run cycles, attacks, idles, FX, flags, fire, animation sheets. Complements game-asset-core.

Build browser games and interactive/canvas/3D experiences in this TanStack Start + React app. Use for any game, simulation, or WebGL/Canvas experience — 2D or 3D, single-player. Covers the game loop & timing, 3D orientation/camera conventions, collision, performance, assets, audio, save, game feel, and per-genre playbooks. For WASD / vehicle / flight **input signs and inverted A/D**, open the **`controls`** skill — do not rely on this file or racing-kart alone. Triggers on "game", "minecraft", "fps", "platformer", "racing", "tetris", "snake", "shooter", "3d", "three.js", "canvas", "voxel", "physics".

Deep guide for game TILE assets: seamless tileable textures, terrain transition tilesets, autotiles, and ground/platform tiles. Use whenever generating tileable textures, tilesets, terrain transitions, or seamless patterns. Complements game-asset-core.

Player-facing input signs for browser games: WASD, vehicles, flight, FPS mouse-look, and the #1 failure mode (inverted A/D). Mandatory control self-tests and a tiny test interface so you can verify A turns left before shipping. Load for ANY game with movement, steering, flying, driving, tanks, boats, mechs, drones, planes, karts, third-person follow cams — not only racing. Triggers on "controls", "WASD", "inverted", "steer", "flight", "airplane", "kart", "vehicle", "yaw", "roll", "pitch", "mouse look", "A/D".

Remotion 代码驱动视频动画专业控制技能。用 React/TypeScript 代码精确控制2D动画，原生支持透明背景(Alpha通道)渲染，可输出WebM/MOV带透明通道视频，适用于剪映模板动画素材制作、UI动画、文字排版动画、角色2D动画等场景。提供API服务化、模板库、质量控制和自学习进化能力。

Add user accounts and sign-in to this TanStack Start app. Use when the app needs authentication, sign-in, user accounts, protected routes, or per-user data. Triggers on "auth", "login", "log in", "sign in", "sign up", "account", "users", "authentication", "protected", "who is logged in", "current user", "per-user".

Animate a Stickman Kino film - write scenes.js from film.json/storyboard using the stickman engine (rigged stick figures with 58 poses and IK, ~190 props, charts and diagrams, kinetic text, captions, camera moves, effects, environments, themes, transitions), synced to the voice-over, then verify with check + snapshots. Use for any scene choreography, motion, layout or visual-fix work on a Stickman Kino film.

End-to-end multi-tenant brand explainer/promo-video pipeline. Generates a complete branded video from a URL — extracts brand identity, writes script, generates voice + AI avatar + B-roll images + music underbed, assembles in HyperFrames, and renders. Trigger phrases include "Hyper Frames for <url>", "make a Hyper Frames video for <brand>", "Hyper Frames promo for <url>", "explainer video for <brand>", or just "Hyper Frames <url>".

End-to-end pipeline that takes a URL and produces a complete branded landing-page revision with a generated hero background video, then deploys it live to Netlify. Chains four steps with zero clarifying questions in between - brand book extraction (with GitHub publish), Nano Banana 2 + Seedance 2 video generation, frontend-design page build, and Netlify deploy. Trigger phrases - "animated website for <url>", "build an animated website from <url>", or "/animated-website <url>". Use when the user wants a viewable HTML landing page revision auto-generated and deployed from a reference URL for design comparison or rapid prototyping.

Survey a codebase's animation and motion code as a senior motion advisor, then produce a prioritized audit and self-contained implementation plans for other agents (or cheaper models) to execute. Read-only on source code — it plans improvements, it does not apply them. Use when the user asks to "improve the animations", "audit the motion", "make this app feel better", or wants a roadmap of animation fixes rather than a review of a single diff.