{
 "title": "Agent-built video: 3 briefs × 3 routes × 3 runs, Claude Code with Claude Opus 5.5",
 "publisher": "JustUse (justuse.tech)",
 "run_date": "2026-10-22",
 "license": "CC BY 4.0",
 "agent": {
  "tool": "Claude Code 2.1.308",
  "model": "claude-opus-5-5",
  "mode": "--dangerously-skip-permissions",
  "budget_cap_usd_per_run": 8
 },
 "isolation": "Each run in a fresh Docker container (node 22, Chromium, ffmpeg, fonts), API key only, no account login, no memory. Before each run the agent was asked what it knows about the user; all 27 named nothing personal (6 mentioned the container's own user name, 'maker').",
 "versions": {
  "hyperframes_skills": "hyperframes@0.8.186 (7 official skills)",
  "remotion": "4.0.538, skills from remotion-dev/skills (12 official skills)",
  "plain_canvas": "no framework; every run chose puppeteer-core for capture"
 },
 "briefs": {
  "character": "Make a 10-second hand-drawn character animation.\n\nFormat: 1920×1080, 30 fps, exactly 10.0 seconds, MP4 (H.264). No audio.\nCharacter: a coffee cup with a face and a handle that works as an arm, on a warm paper-texture background.\n\nBeats:\n- 0–3 s: the cup sleeps, eyes closed, small \"z\" letters rise and fade.\n- 3–5 s: its eyes open, steam curls up from the cup.\n- 5–8 s: it stretches its handle-arm and waves at the viewer.\n- 8–10 s: it smiles, and the words \"Good morning.\" appear hand-lettered.\n\nThe line must look hand-drawn (slightly irregular; a gentle line boil is welcome), not clean vector. Draw everything in code: no image or video generation, no downloaded images.",
  "explainer": "Make a 20-second explainer: \"How compound interest works\".\n\nFormat: 1920×1080, 30 fps, exactly 20.0 seconds, MP4 (H.264). No audio.\nLook: white background, dark text, one accent colour for the compound line and a grey for the simple-interest line. Clean sans-serif.\n\nContent (use exactly these numbers):\n- €1,000 invested at 5 % a year, compounded yearly, for 30 years.\n- A line chart, x-axis 0–30 years, y-axis €0–€5,000, labelled axes. The compound line draws in from left to right.\n- Value labels appear on the line at year 10 (€1,628.89), year 20 (€2,653.30) and year 30 (€4,321.94).\n- A grey straight line for simple interest (€50 a year, €2,500 at year 30) draws in for comparison.\n- The formula A = P(1 + r)^n is shown, typeset properly.\n- Three captions at the bottom, one after another:\n  1. \"€1,000 at 5 % a year.\"\n  2. \"Interest earns interest.\"\n  3. \"After 30 years: €4,321.94 instead of €2,500.\"\n\nEvery number on screen must be exactly as given. Text never overlaps the chart lines or other text.",
  "promo": "Make a 10-second launch promo for a fictional invoicing app called Ledgerly.\n\nFormat: 1920×1080, 30 fps, exactly 10.0 seconds, MP4 (H.264). No audio.\nLook: off-white background #FBFAF5, ink #16140F, one accent colour #2B59C3. One bold sans-serif typeface.\n\nBeats:\n- 0–2.5 s: \"Invoices.\" slams in, then \"Chasing payments.\" appears below it.\n- 2.5–5 s: \"Late fees.\" joins them, then the three lines are struck through one by one.\n- 5–8 s: \"Ledgerly sends them. Follows up. Gets you paid.\" as kinetic typography, word by word.\n- 8–10 s: end card with the wordmark \"Ledgerly\" and \"ledgerly.app\", held still.\n\nAll text stays fully inside a 5 % safe margin and never overlaps other text. Motion is eased, not linear. No frame is static for longer than 1 second, except the final hold."
 },
 "routes": {
  "hyperframes": "Build it with HyperFrames (npm package `hyperframes`, HTML compositions rendered to video). Its official skills are installed; use them.",
  "raw": "Build it without a video framework: a plain web page (Canvas, SVG and JavaScript) that can draw any moment through `window.renderAt(t)`, every frame captured with headless Chromium (Puppeteer or Playwright), encoded with ffmpeg.",
  "remotion": "Build it with Remotion (npm package `remotion`, React compositions rendered to video). Its official skills are installed; use them."
 },
 "common_instructions": "Chromium is at /usr/bin/chromium and ffmpeg is installed. You may install npm or pip packages. Work alone; do not ask questions, nobody will answer. Check your own result by looking at frames before you finish. Deliver the final video at /work/out/final.mp4.",
 "measures": {
  "spec_ok": "ffprobe: duration within 0.1 s of the brief, 1920×1080, 30 fps, H.264",
  "route_used": "the source tarball shows the route's framework (.hyperframes/ project or 'remotion' in package.json; neither for plain Canvas)",
  "ocr": "tesseract on single frames at fixed times, looking for the brief's exact strings. A miss is not a defect by itself: hand-lettering is not read, and two promos show the last lines one at a time. Every miss was checked by eye; the text was on screen in all 27 videos.",
  "freezes": "ffmpeg freezedetect, noise 0.0005, at least 1 s; the promo brief allows a still end card from 8 s",
  "margin": "promo only: union bounding box of non-background pixels over every 5th frame vs a 5 % safe area"
 },
 "not_measured": [
  "taste, motion quality and whether a person would watch it (no human or model rating)",
  "text overlap",
  "audio (the briefs asked for none)"
 ],
 "runs": [
  {
   "id": "character-hyperframes-1",
   "brief": "character",
   "route": "hyperframes",
   "trial": 1,
   "exit_code": 0,
   "wall_seconds": 517,
   "cost_usd": 1.5056400000000003,
   "turns": 26,
   "models": [
    "claude-opus-5-5"
   ],
   "probe_none": true,
   "delivered": true,
   "format": {
    "duration": 10.0,
    "width": 1920,
    "height": 1080,
    "fps": 30.0,
    "codec": "h264",
    "frames": 300,
    "audio": false,
    "bytes": 5666987
   },
   "spec_ok": true,
   "route_used": true,
   "ocr_found": 0,
   "ocr_expected": 1,
   "ocr_missing": [
    "Good morning @9.8s"
   ],
   "freezes": [],
   "freeze_before_hold": null,
   "margin": null,
   "contact_sheet": "https://justuse.tech/data/ai-video-render-test-2026-10/sheets/character-hyperframes-1.jpg",
   "video_preview": "https://justuse.tech/data/ai-video-render-test-2026-10/video/character-hyperframes-1.mp4"
  },
  {
   "id": "character-hyperframes-2",
   "brief": "character",
   "route": "hyperframes",
   "trial": 2,
   "exit_code": 0,
   "wall_seconds": 415,
   "cost_usd": 1.1391838,
   "turns": 26,
   "models": [
    "claude-opus-5-5"
   ],
   "probe_none": true,
   "delivered": true,
   "format": {
    "duration": 10.0,
    "width": 1920,
    "height": 1080,
    "fps": 30.0,
    "codec": "h264",
    "frames": 300,
    "audio": false,
    "bytes": 5532802
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   "spec_ok": true,
   "route_used": true,
   "ocr_found": 0,
   "ocr_expected": 1,
   "ocr_missing": [
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   ],
   "freezes": [],
   "freeze_before_hold": null,
   "margin": null,
   "contact_sheet": "https://justuse.tech/data/ai-video-render-test-2026-10/sheets/character-hyperframes-2.jpg",
   "video_preview": null
  },
  {
   "id": "character-hyperframes-3",
   "brief": "character",
   "route": "hyperframes",
   "trial": 3,
   "exit_code": 0,
   "wall_seconds": 389,
   "cost_usd": 1.0602114,
   "turns": 21,
   "models": [
    "claude-opus-5-5"
   ],
   "probe_none": true,
   "delivered": true,
   "format": {
    "duration": 10.0,
    "width": 1920,
    "height": 1080,
    "fps": 30.0,
    "codec": "h264",
    "frames": 300,
    "audio": false,
    "bytes": 6174609
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   "spec_ok": true,
   "route_used": true,
   "ocr_found": 0,
   "ocr_expected": 1,
   "ocr_missing": [
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   "freezes": [],
   "freeze_before_hold": null,
   "margin": null,
   "contact_sheet": "https://justuse.tech/data/ai-video-render-test-2026-10/sheets/character-hyperframes-3.jpg",
   "video_preview": null
  },
  {
   "id": "character-raw-1",
   "brief": "character",
   "route": "raw",
   "trial": 1,
   "exit_code": 0,
   "wall_seconds": 390,
   "cost_usd": 0.9432102,
   "turns": 21,
   "models": [
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   "probe_none": true,
   "delivered": true,
   "format": {
    "duration": 10.0,
    "width": 1920,
    "height": 1080,
    "fps": 30.0,
    "codec": "h264",
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    "audio": false,
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   "spec_ok": true,
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   "contact_sheet": "https://justuse.tech/data/ai-video-render-test-2026-10/sheets/character-raw-1.jpg",
   "video_preview": "https://justuse.tech/data/ai-video-render-test-2026-10/video/character-raw-1.mp4"
  },
  {
   "id": "character-raw-2",
   "brief": "character",
   "route": "raw",
   "trial": 2,
   "exit_code": 0,
   "wall_seconds": 407,
   "cost_usd": 1.0102684000000002,
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   "delivered": true,
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   "video_preview": null
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   "id": "character-raw-3",
   "brief": "character",
   "route": "raw",
   "trial": 3,
   "exit_code": 0,
   "wall_seconds": 498,
   "cost_usd": 1.1984282000000004,
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   "models": [
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   "probe_none": true,
   "delivered": true,
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   "video_preview": "https://justuse.tech/data/ai-video-render-test-2026-10/video/character-remotion-1.mp4"
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   "route": "remotion",
   "trial": 2,
   "exit_code": 0,
   "wall_seconds": 301,
   "cost_usd": 0.8038694,
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   "probe_none": true,
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   "format": {
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   "route": "remotion",
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   "exit_code": 0,
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   "cost_usd": 0.9374138000000002,
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   "models": [
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   "probe_none": false,
   "delivered": true,
   "format": {
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   "cost_usd": 0.48947840000000004,
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