{
"name": "Weekly news roundup video from your RSS feeds (Zvid)",
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
50,
240
],
"id": "zvid-wr-0001",
"name": "Test manually"
},
{
"parameters": {
"rule": {
"interval": [
{
"field": "weeks",
"triggerAtDay": [
5
],
"triggerAtHour": 16
}
]
}
},
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.2,
"position": [
310,
240
],
"id": "zvid-wr-0002",
"name": "Every Friday at 4pm"
},
{
"parameters": {
"mode": "raw",
"jsonOutput": "{\n \"apiUrl\": \"https://api.zvid.io\",\n \"editorUrl\": \"https://editor.zvid.io\",\n \"niche\": \"AI and tech\",\n \"feedUrls\": [\n \"https://techcrunch.com/feed/\",\n \"https://www.theverge.com/rss/index.xml\",\n \"https://blog.google/rss/\"\n ],\n \"lookbackDays\": 7,\n \"targetSeconds\": 60,\n \"brandName\": \"The Weekly Signal\",\n \"ctaText\": \"Follow for next week's five\",\n \"brandBackground\": \"#0D1117\",\n \"brandAccent\": \"#FFC24B\",\n \"headlineColor\": \"#FFFFFF\",\n \"mutedColor\": \"#9AA3B2\",\n \"font\": \"Archivo\",\n \"llmModel\": \"openai/gpt-4.1-mini\",\n \"voiceId\": \"nPczCjzI2devNBz1zQrb\",\n \"voiceLabel\": \"Brian (deep narrator)\",\n \"elevenModel\": \"eleven_multilingual_v2\",\n \"voiceStability\": 0.4,\n \"voiceSimilarity\": 0.75,\n \"captionAnimation\": \"karaoke\",\n \"captionWordsPerCue\": 3,\n \"captionSize\": 64,\n \"captionStrokeWidth\": 6,\n \"captionActiveColor\": \"#0D1117\",\n \"sceneTransition\": \"smoothleft\",\n \"transitionSeconds\": 0.4,\n \"kenBurnsDepth\": 1.12,\n \"musicVolume\": 0.11,\n \"maxMusicSeconds\": 200,\n \"maxMusicBytes\": 5242880,\n \"resolution\": \"instagram-reel\",\n \"frameRate\": 30,\n \"tailSeconds\": 0.4,\n \"dryRun\": false,\n \"pollSeconds\": 10,\n \"timeoutMinutes\": 20\n}",
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
570,
240
],
"id": "zvid-wr-0003",
"name": "Config"
},
{
"parameters": {
"jsCode": "// One item per configured feed URL; the single RSS node after this runs once\n// per item. Empty slots are skipped, so one, three or ten feeds all work.\nconst cfg = $input.first().json;\nconst urls = (Array.isArray(cfg.feedUrls) ? cfg.feedUrls : [])\n .map((u) => String(u == null ? '' : u).trim())\n .filter((u) => /^https?:\\/\\//i.test(u));\nif (!urls.length) {\n throw new Error('Config.feedUrls has no usable URLs. Add at least one RSS feed URL.');\n}\nreturn urls.map((feedUrl) => ({ json: { feedUrl } }));"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1050,
240
],
"id": "zvid-wr-0004",
"name": "Plan feeds"
},
{
"parameters": {
"url": "={{ $json.feedUrl }}",
"options": {}
},
"type": "n8n-nodes-base.rssFeedRead",
"typeVersion": 1.1,
"position": [
1310,
240
],
"id": "zvid-wr-0005",
"name": "Read feeds",
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000,
"onError": "continueRegularOutput",
"alwaysOutputData": true
},
{
"parameters": {
"jsCode": "// Merges every feed item into one deduped pool (last lookbackDays days, cap\n// 40 headlines) and builds the curation prompt. A feed that failed simply\n// contributes nothing - the run continues as long as ANY feed returned items.\nconst cfg = $('Config').first().json;\nconst items = $input.all().map((i) => i.json);\nconst now = new Date();\nconst lookbackMs = Math.max(1, Number(cfg.lookbackDays || 7)) * 86400000;\n\nconst domainOf = (link) => {\n const m = /^https?:\\/\\/([^\\/:?#]+)/i.exec(String(link || ''));\n return m ? m[1].replace(/^www\\./, '') : '';\n};\nconst strip = (s) => String(s == null ? '' : s).replace(/<[^>]*>/g, ' ').replace(/&[a-zA-Z#0-9]+;/g, ' ').replace(/\\s+/g, ' ').trim();\n\nconst seen = new Set();\nconst pool = [];\nfor (const it of items) {\n if (!it || !it.title || !it.link) continue; // error placeholders from a dead feed land here\n const title = strip(it.title);\n if (!title) continue;\n const when = new Date(it.isoDate || it.pubDate || NaN);\n if (!isNaN(when) && now - when > lookbackMs) continue; // undated items stay in\n const key = title.toLowerCase().replace(/[^a-z0-9]+/g, ' ').trim().slice(0, 80);\n if (!key || seen.has(key)) continue;\n seen.add(key);\n pool.push({\n n: pool.length + 1,\n title: title.slice(0, 160),\n snippet: strip(it.contentSnippet || it.content || it.summary || '').slice(0, 200),\n source: domainOf(it.link),\n link: String(it.link),\n });\n if (pool.length >= 40) break;\n}\n\nif (!pool.length) {\n throw new Error('No usable stories in the last ' + (cfg.lookbackDays || 7) + ' days from any configured feed. Check Config.feedUrls, or raise lookbackDays.');\n}\n\nconst lines = pool.map((p) => p.n + '. [' + (p.source || 'unknown') + '] ' + p.title + (p.snippet ? ' - ' + p.snippet : ''));\nconst promptText =\n 'Niche: ' + cfg.niche + '\\n' +\n 'This week\\'s pooled headlines (format: number. [source] title - snippet):\\n' +\n lines.join('\\n') + '\\n\\n' +\n 'Pick the five most consequential stories for this niche and write a countdown script. Rules:\\n' +\n '1. Return stories in COUNTDOWN order: the first array entry is number five, the last entry is number one, the single biggest story of the week.\\n' +\n '2. headline: rewrite it punchy and neutral, twelve words or fewer, no clickbait, no trailing period.\\n' +\n '3. blurb: exactly one spoken sentence of eighteen to twenty six words that a narrator reads aloud. Plain spoken words only: no digits (spell numbers out as words), no abbreviations, no quotes, no emoji, plain ASCII punctuation. Never say the rank number - the video shows it on screen.\\n' +\n '4. index: the number of the pooled headline the story came from. The video prints that entry\\'s real source, so never merge two pooled stories and never invent one.\\n' +\n '5. visualQuery: two to four plain words naming concrete filmable stock footage for the story (an object, place or action - never an abstract idea).\\n' +\n '6. intro: one spoken sentence, at most eighteen words, that opens the show, names the niche and teases the countdown.\\n' +\n '7. outro: one spoken sentence, at most sixteen words, that signs off and invites the viewer to follow next week.\\n' +\n '8. If the pool has fewer than five distinct stories, return as many as exist in the same shape.\\n\\n' +\n 'Return exactly this JSON shape:\\n' +\n '{\\n' +\n ' \"intro\": \"one sentence\",\\n' +\n ' \"musicTag\": \"one of: ambient, cinematic, inspiring, chill, suspense, calm, dramatic, rock, piano\",\\n' +\n ' \"stories\": [{ \"index\": 12, \"headline\": \"...\", \"blurb\": \"...\", \"visualQuery\": \"...\" }],\\n' +\n ' \"outro\": \"one sentence\"\\n' +\n '}';\n\nreturn [{ json: { ...cfg, promptText, pool, nowIso: now.toISOString(), pooled: pool.length } }];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1570,
240
],
"id": "zvid-wr-0006",
"name": "Pool headlines"
},
{
"parameters": {
"method": "POST",
"url": "https://openrouter.ai/api/v1/chat/completions",
"authentication": "predefinedCredentialType",
"nodeCredentialType": "openRouterApi",
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={{ JSON.stringify({ model: $json.llmModel, response_format: { type: \"json_object\" }, messages: [ { role: \"system\", content: \"You curate and script a weekly news countdown video. You return JSON only.\\n\\nEvery sentence you write is spoken by a text-to-speech voice and burned on screen as word-timed captions, so all copy must be clean spoken English with no formatting.\" }, { role: \"user\", content: $json.promptText } ] }) }}",
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
2050,
240
],
"id": "zvid-wr-0007",
"name": "Curate top five",
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
},
{
"parameters": {
"jsCode": "// Parses the curator's JSON, normalises the copy to ASCII (curly quotes make\n// the voice stumble and break caption word-matching), maps every story back\n// to its pooled source, and builds the exact narration string sent to TTS.\nconst cfg = $('Config').first().json;\nconst poolNode = $('Pool headlines').first().json;\nconst res = $input.first().json;\n\nconst content = res && res.choices && res.choices[0] && res.choices[0].message ? res.choices[0].message.content : null;\nif (!content) {\n throw new Error('The model returned no content: ' + JSON.stringify(res).slice(0, 400));\n}\n\nlet rundown;\ntry {\n rundown = JSON.parse(content);\n} catch (e) {\n const m = /\\{[\\s\\S]*\\}/.exec(content);\n if (!m) throw new Error('The model did not return JSON:\\n' + content.slice(0, 400));\n rundown = JSON.parse(m[0]);\n}\n\nconst toAscii = (s) =>\n String(s)\n .replace(/[\\u2018\\u2019\\u02BC]/g, \"'\")\n .replace(/[\\u201C\\u201D]/g, '\"')\n .replace(/[\\u2013\\u2014]/g, '-')\n .replace(/\\u2026/g, '...')\n .replace(/\\s+/g, ' ')\n .trim();\n\nlet stories = Array.isArray(rundown.stories) ? rundown.stories.slice(0, 5) : [];\nstories = stories.filter((s) => s && typeof s.headline === 'string' && typeof s.blurb === 'string' && s.headline.trim() && s.blurb.trim());\nif (!stories.length) throw new Error('The model returned no usable stories.');\n\nfor (const s of stories) {\n s.headline = toAscii(s.headline).replace(/[.]+$/, '');\n const hw = s.headline.split(' ');\n if (hw.length > 16) s.headline = hw.slice(0, 16).join(' ');\n s.blurb = toAscii(s.blurb);\n s.visualQuery = toAscii(s.visualQuery || s.headline).split(' ').slice(0, 5).join(' ');\n // The on-screen source tag comes from the REAL pooled item, never from the\n // model - an invalid index just means the tag is omitted for that story.\n const src = (poolNode.pool || []).find((p) => p.n === Number(s.index));\n s.source = src ? src.source : '';\n s.link = src ? src.link : '';\n}\n\nconst MUSIC_TAGS = ['ambient', 'cinematic', 'inspiring', 'chill', 'suspense', 'calm', 'dramatic', 'rock', 'piano'];\nconst musicTag = MUSIC_TAGS.includes(String(rundown.musicTag || '').toLowerCase())\n ? String(rundown.musicTag).toLowerCase()\n : 'cinematic';\n\nconst COUNT_WORDS = ['zero', 'one', 'two', 'three', 'four', 'five'];\nconst intro = toAscii(rundown.intro || 'The ' + (COUNT_WORDS[stories.length] || stories.length) + ' stories that shaped ' + cfg.niche + ' this week, counted down.');\nconst outro = toAscii(rundown.outro || 'That is the week, follow along for the next countdown.');\n\nconst narration = [intro].concat(stories.map((s) => s.blurb)).concat([outro]).join(' ');\nconst wordCount = narration.split(/\\s+/).filter(Boolean).length;\nif (wordCount < 40) {\n throw new Error('The script is only ' + wordCount + ' words - too short for a roundup. Retry, or use a stronger model.');\n}\n\nreturn [{\n json: {\n intro,\n outro,\n stories,\n musicTag,\n narration,\n wordCount,\n niche: cfg.niche,\n nowIso: poolNode.nowIso,\n pooledCount: poolNode.pooled,\n },\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2310,
240
],
"id": "zvid-wr-0008",
"name": "Parse rundown"
},
{
"parameters": {
"jsCode": "// One item per story so the stock search below runs once per story.\nconst rundown = $input.first().json;\nreturn rundown.stories.map((s, index) => ({\n json: { index, headline: s.headline, visualQuery: s.visualQuery },\n}));"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2790,
240
],
"id": "zvid-wr-0009",
"name": "Expand stories"
},
{
"parameters": {
"resource": "stockMedia",
"operation": "search",
"stockType": "video",
"stockQuery": "={{ $json.visualQuery }}",
"stockPage": 1,
"stockPerPage": "20"
},
"type": "@zvid/n8n-nodes-zvid.zvid",
"typeVersion": 1,
"position": [
3050,
240
],
"id": "zvid-wr-0010",
"name": "Search stock clips",
"onError": "continueRegularOutput",
"alwaysOutputData": true,
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
},
{
"parameters": {
"jsCode": "// Picks one b-roll clip per story from Zvid's stock library. Portrait clips\n// win because the canvas is 1080x1920 - a landscape clip still works via\n// resize:\"cover\", it is just cropped harder. A story with no match gets a\n// branded gradient panel in the builder, so missing footage NEVER fails a run.\nconst cfg = $('Config').first().json;\nconst rundown = $('Parse rundown').first().json;\nconst responses = $input.all();\nconst approxSceneSeconds = Number(cfg.targetSeconds || 60) / (rundown.stories.length + 2);\n\nfunction pick(items, needSeconds) {\n const usable = (items || []).filter((it) => it && it.src);\n if (!usable.length) return null;\n return usable\n .map((it) => {\n const portrait = Number(it.height) > Number(it.width);\n const longEnough = Number(it.duration || 0) >= needSeconds;\n return {\n it,\n score: (portrait ? 2 : 0) + (longEnough ? 1 : 0) + Math.min(1, Number(it.duration || 0) / 30),\n };\n })\n .sort((a, b) => b.score - a.score)[0].it;\n}\n\nconst sceneMedia = rundown.stories.map((_, i) => {\n const body = responses[i] && responses[i].json ? responses[i].json : {};\n const chosen = pick(body.items, approxSceneSeconds);\n if (!chosen) return null;\n return {\n kind: chosen.kind || 'video',\n src: chosen.src,\n duration: Number(chosen.duration) || null,\n width: Number(chosen.width) || null,\n height: Number(chosen.height) || null,\n credit: chosen.credit || null,\n };\n});\n\nconst missing = sceneMedia.filter((m) => !m).length;\nreturn [{ json: { sceneMedia, missing } }];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
3310,
240
],
"id": "zvid-wr-0011",
"name": "Pick story clips"
},
{
"parameters": {
"jsCode": "// The music catalogue is tag-matched and occasionally returns nothing for a\n// tag that worked a minute ago, so ask for the curator's tag plus two broad\n// fallbacks. One item per query -> the search node runs once per tag.\nconst tag = $('Parse rundown').first().json.musicTag;\nconst queries = [...new Set([tag, 'cinematic', 'ambient'])];\nreturn queries.map((query) => ({ json: { query } }));"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
50,
920
],
"id": "zvid-wr-0012",
"name": "Music queries"
},
{
"parameters": {
"resource": "stockMedia",
"operation": "search",
"stockType": "audio",
"stockQuery": "={{ $json.query }}",
"stockPage": 1,
"stockPerPage": "10"
},
"type": "@zvid/n8n-nodes-zvid.zvid",
"typeVersion": 1,
"position": [
310,
920
],
"id": "zvid-wr-0013",
"name": "Find background music",
"onError": "continueRegularOutput",
"alwaysOutputData": true
},
{
"parameters": {
"jsCode": "// Rank the music candidates. Long tracks mean big files, and the renderer\n// rejects any asset over the plan's audio size cap - a 6 MB track fails the\n// WHOLE render, so a nice-to-have music bed must never be able to do that.\n// Shortest-but-long-enough wins; the next node probes the real byte size.\nconst cfg = $('Config').first().json;\nconst maxSeconds = Number(cfg.maxMusicSeconds == null ? 200 : cfg.maxMusicSeconds);\n\nconst seen = new Set();\nconst all = [];\nfor (const r of $input.all()) {\n for (const m of r.json.items || []) {\n if (!m || !m.src) continue;\n const key = m.id || m.src;\n if (seen.has(key)) continue;\n seen.add(key);\n all.push(m);\n }\n}\n\nconst sized = all\n .filter((m) => { const d = Number(m.duration) || 0; return d >= 45 && d <= maxSeconds; })\n .sort((a, b) => (Number(a.duration) || 0) - (Number(b.duration) || 0));\n\nconst pool = (sized.length ? sized : all).slice(0, 4);\nif (!pool.length) {\n // Nothing to probe, but the next node must still emit one item so the\n // pairing in \"Pick music\" stays aligned. Point it at the API health check:\n // a 2-byte 200 that exists for exactly this kind of ping.\n return [{ json: { candidate: null, probeUrl: String(cfg.apiUrl).replace(/\\/+$/, '') + '/healthz' } }];\n}\nreturn pool.map((candidate) => ({ json: { candidate, probeUrl: candidate.src } }));"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
570,
920
],
"id": "zvid-wr-0014",
"name": "Shortlist music"
},
{
"parameters": {
"method": "HEAD",
"url": "={{ $json.probeUrl }}",
"options": {
"response": {
"response": {
"fullResponse": true,
"neverError": true
}
},
"redirect": {
"redirect": {}
},
"timeout": 15000
}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
830,
920
],
"id": "zvid-wr-0015",
"name": "Check music asset",
"onError": "continueRegularOutput",
"alwaysOutputData": true
},
{
"parameters": {
"jsCode": "// Keep the first candidate that is actually downloadable and within the size\n// cap, then collapse to ONE item - otherwise the voiceover step downstream\n// would run once per candidate. No usable track just means no music bed; it\n// must never fail the run.\nconst cfg = $('Config').first().json;\nconst limit = Number(cfg.maxMusicBytes == null ? 5242880 : cfg.maxMusicBytes);\nconst shortlist = $('Shortlist music').all().map((i) => i.json);\nconst probes = $input.all();\n\nlet music = null;\nconst rejected = [];\nfor (let i = 0; i < probes.length; i += 1) {\n const candidate = shortlist[i] && shortlist[i].candidate;\n if (!candidate) continue;\n const p = probes[i] ? probes[i].json : {};\n const status = Number(p.statusCode);\n const headers = p.headers || {};\n const bytes = Number(headers['content-length'] || headers['Content-Length'] || 0);\n\n if (status !== 200) { rejected.push(candidate.id + ': HTTP ' + (status || '?')); continue; }\n if (bytes && bytes > limit) { rejected.push(candidate.id + ': ' + bytes + ' bytes > ' + limit); continue; }\n music = candidate;\n break;\n}\n\nreturn [{ json: { music, checked: probes.length, rejected } }];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
830,
1160
],
"id": "zvid-wr-0016",
"name": "Pick music"
},
{
"parameters": {
"method": "POST",
"url": "=https://api.elevenlabs.io/v1/text-to-speech/{{ $('Config').first().json.voiceId }}/with-timestamps",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "output_format",
"value": "mp3_44100_128"
}
]
},
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={{ JSON.stringify({ text: $('Parse rundown').first().json.narration, model_id: $('Config').first().json.elevenModel, voice_settings: { stability: $('Config').first().json.voiceStability, similarity_boost: $('Config').first().json.voiceSimilarity } }) }}",
"options": {
"timeout": 120000
}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1310,
920
],
"id": "zvid-wr-0017",
"name": "Generate voiceover",
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
},
{
"parameters": {
"jsCode": "// Turns one ElevenLabs \"with-timestamps\" response into (a) an mp3 binary ready\n// for upload and (b) word timings.\n//\n// The alignment comes from the synthesiser itself, so the timings ARE the audio\n// - there is no separate transcription step to disagree with, and nothing that\n// can drift. That is the whole reason this endpoint is used instead of plain\n// text-to-speech.\nconst res = $input.first().json;\n\nif (!res || !res.audio_base64) {\n throw new Error(\n 'ElevenLabs returned no audio. Check the xi-api-key credential, the voiceId, and your character quota. Response: ' +\n JSON.stringify(res).slice(0, 300)\n );\n}\n\nconst a = res.alignment || res.normalized_alignment;\nif (!a || !Array.isArray(a.characters)) {\n throw new Error('ElevenLabs returned audio but no alignment - make sure the URL ends in /with-timestamps.');\n}\n\nconst chars = a.characters;\nconst starts = a.character_start_times_seconds || [];\nconst ends = a.character_end_times_seconds || [];\n\n// Alignment is per CHARACTER; group runs of non-whitespace into words.\nconst words = [];\nlet cur = null;\nfor (let i = 0; i < chars.length; i += 1) {\n const ch = chars[i];\n if (/\\s/.test(ch)) {\n if (cur) { words.push(cur); cur = null; }\n continue;\n }\n if (!cur) cur = { text: ch, start: Number(starts[i]), end: Number(ends[i]) };\n else { cur.text += ch; cur.end = Number(ends[i]); }\n}\nif (cur) words.push(cur);\n\nif (!words.length) throw new Error('Alignment contained no words.');\n\nconst duration = Number(ends[ends.length - 1]) || words[words.length - 1].end;\n\nreturn [{\n json: { words, duration, wordCount: words.length },\n // n8n binary payloads carry base64 in 'data'; naming it matters because Zvid\n // derives the media kind from the MIME type on upload.\n binary: {\n data: {\n data: res.audio_base64,\n mimeType: 'audio/mpeg',\n fileName: 'voiceover.mp3',\n fileExtension: 'mp3',\n },\n },\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1570,
920
],
"id": "zvid-wr-0018",
"name": "Voice + timings"
},
{
"parameters": {
"method": "POST",
"url": "={{ $('Config').first().json.apiUrl }}/api/uploads",
"authentication": "predefinedCredentialType",
"sendBody": true,
"contentType": "multipart-form-data",
"bodyParameters": {
"parameters": [
{
"parameterType": "formBinaryData",
"name": "file",
"inputDataFieldName": "data"
}
]
},
"options": {},
"nodeCredentialType": "zvidApi"
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1830,
920
],
"id": "zvid-wr-0019",
"name": "Upload voiceover",
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000,
"notes": "File upload exception: the published Zvid node does not expose multipart uploads. The upload step uses HTTP Request → `POST /api/uploads`, authenticated with the same **Zvid API** credential. All supported Zvid operations use the Zvid node.",
"notesInFlow": true
},
{
"parameters": {
"jsCode": "// === buildRoundup — identical to the frame-reviewed standalone builder ===\n// Assembles the Zvid project: branded cold open, five countdown story scenes\n// (5 → 1) with b-roll + headline cards + source tags, outro CTA, word-timed\n// karaoke captions riding the narration, and an optional music bed.\nfunction buildRoundup(cfg, data) {\n const clamp = (n, lo, hi) => Math.min(hi, Math.max(lo, n));\n const round = (n) => Math.round(n * 100) / 100;\n const clean = (v) => String(v == null ? '' : v).replace(/\\s+/g, ' ').trim();\n const esc = (s) => String(s).replace(/[&<>\"']/g, (c) => ({ '&': '&', '<': '<', '>': '>', '\"': '"', \"'\": ''' }[c]));\n // SVG + inline CSS need rgba() variants of the two brand hexes.\n const rgba = (hex, a) => {\n const h = String(hex || '').replace('#', '');\n const f = h.length === 3 ? h.split('').map((c) => c + c).join('') : (h + '000000').slice(0, 6);\n const n = parseInt(f, 16);\n return 'rgba(' + ((n >> 16) & 255) + ',' + ((n >> 8) & 255) + ',' + (n & 255) + ',' + a + ')';\n };\n\n const rundown = data.rundown || {};\n const stories = Array.isArray(rundown.stories) ? rundown.stories : [];\n if (!stories.length) throw new Error('The rundown has no stories to render.');\n const storyCount = Math.min(stories.length, 5);\n\n const bg = clean(cfg.brandBackground) || '#0D1117';\n const accent = clean(cfg.brandAccent) || '#FFC24B';\n const paper = clean(cfg.headlineColor) || '#FFFFFF';\n const muted = clean(cfg.mutedColor) || '#9AA3B2';\n const font = clean(cfg.font) || 'Archivo';\n const brandName = clean(cfg.brandName) || 'The Weekly Signal';\n const brandUpper = esc(brandName.toUpperCase());\n const niche = clean(rundown.niche || cfg.niche) || 'the news';\n const nicheUpper = esc(niche.toUpperCase());\n const ctaText = clean(cfg.ctaText) || 'Follow for next week';\n\n // ---- dateline -----------------------------------------------------------\n // Derived from the pooling step's clock so a re-run of the same execution\n // reproduces the same video (no Date.now() in the design path).\n const now = rundown.nowIso ? new Date(rundown.nowIso) : new Date();\n const lookback = Math.max(1, Number(cfg.lookbackDays || 7));\n const startD = new Date(now.getTime() - (lookback - 1) * 86400000);\n const MONTHS = ['JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN', 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC'];\n const fmtDay = (d) => MONTHS[d.getUTCMonth()] + ' ' + d.getUTCDate();\n const dateline = 'WEEK OF ' + fmtDay(startD) + ' – ' + fmtDay(now);\n const COUNT_WORDS = ['', 'ONE', 'TWO', 'THREE', 'FOUR', 'FIVE'];\n\n // ---- adaptive type ------------------------------------------------------\n // Greedy word-wrap estimate. avgEm is calibrated per weight/case AND biased\n // high on purpose: over-counting lines only pushes a block further down\n // empty canvas, while under-counting collides it with the block below.\n // (Measured against the production renderer: heavy uppercase Archivo runs\n // ~0.74 em per character, and letter-spacing has to be paid for on top.)\n const wrapLines = (text, fontPx, boxPx, avgEm) => {\n const perLine = Math.max(6, Math.floor(boxPx / (fontPx * avgEm)));\n let lines = 1;\n let used = 0;\n for (const w of String(text).split(' ')) {\n const need = used === 0 ? w.length : used + 1 + w.length;\n if (need <= perLine) { used = need; continue; }\n lines += 1;\n used = Math.min(w.length, perLine);\n }\n return lines;\n };\n\n // ---- narration timing ---------------------------------------------------\n const timings = data.timings || {};\n const words = (Array.isArray(timings.words) ? timings.words : [])\n .map((w) => ({ text: String(w.text == null ? '' : w.text).trim(), start: Number(w.start), end: Number(w.end) }))\n .filter((w) => w.text && Number.isFinite(w.start) && Number.isFinite(w.end));\n const narrationEnd = words.length ? words[words.length - 1].end : Number(timings.duration) || 45;\n const audioDuration = Math.max(Number(timings.duration) || 0, narrationEnd);\n\n const countWords = (s) =>\n String(s || '').replace(/[^\\p{L}\\p{N}'’]+/gu, ' ').trim().split(/\\s+/).filter(Boolean).length;\n\n // Source chips are display chrome, not data. A 60-character hyphenated host\n // wraps to two lines and visually out-ranks the headline it is labelling, so\n // the chip shows the registrable domain, ellipsised on a hyphen boundary.\n // meta.countdown still reports every story's untouched source.\n const shortenSource = (raw) => {\n const parts = String(raw).split('.').filter(Boolean);\n let d = String(raw);\n if (parts.length > 2) {\n const tail = parts.slice(-2);\n // 'news.bbc.co.uk' keeps three labels; 'www.theverge.com' keeps two.\n d = (tail[0].length <= 3 && tail[1].length <= 3 ? parts.slice(-3) : tail).join('.');\n }\n if (d.length <= 28) return d;\n const cut = d.slice(0, 27);\n const brk = cut.lastIndexOf('-');\n return (brk >= 14 ? cut.slice(0, brk) : cut) + '…';\n };\n\n // Segments: intro, one blurb per story (countdown order), outro.\n const segTexts = [clean(rundown.intro)].concat(stories.slice(0, storyCount).map((s) => clean(s.blurb))).concat([clean(rundown.outro)]);\n const perSeg = segTexts.map(countWords);\n const totalScripted = perSeg.reduce((a, b) => a + b, 0);\n\n // Walking the alignment by per-segment word count puts every cut on a\n // sentence boundary; a proportional split is the safety net (digits or\n // abbreviations the model failed to spell out).\n const drift = totalScripted ? Math.abs(words.length - totalScripted) / totalScripted : 1;\n const useWordMap = words.length > 0 && drift <= 0.2;\n\n const spans = [];\n if (useWordMap) {\n let cursor = 0;\n for (let i = 0; i < perSeg.length; i += 1) {\n const start = cursor === 0 ? 0 : words[cursor - 1].end;\n cursor = Math.min(cursor + perSeg[i], words.length);\n const last = words[cursor - 1];\n spans.push({ start, end: i === perSeg.length - 1 ? audioDuration : last ? last.end : audioDuration });\n }\n } else {\n const weightTotal = totalScripted || perSeg.length;\n let t = 0;\n for (let i = 0; i < perSeg.length; i += 1) {\n const start = t;\n t = i === perSeg.length - 1 ? audioDuration : t + ((perSeg[i] || 1) / weightTotal) * audioDuration;\n spans.push({ start, end: t });\n }\n }\n spans[spans.length - 1].end += Number(cfg.tailSeconds == null ? 0.4 : cfg.tailSeconds);\n\n const transition = cfg.sceneTransition || null;\n const tDur = transition ? Number(cfg.transitionSeconds == null ? 0.4 : cfg.transitionSeconds) : 0;\n const minScene = Math.max(1.2, tDur * 3);\n\n // ---- shared SVG pieces --------------------------------------------------\n // Card panel for the intro and outro. The diagonal brand mark lives in the\n // BOTTOM-right quadrant: the header band belongs to the brand chip, whose\n // width follows a user-supplied brandName and therefore cannot be reasoned\n // about. Below y=1400 both cards are empty (intro copy ends by ~1240, outro\n // copy by ~1370) and the mark clears the 1770 rule, so no length of any\n // Config string can reach it.\n const brandPanelSvg = (idTag) =>\n \"';\n\n // Panel for a story scene whose stock search found nothing — a designed\n // alternative, not a blank canvas. It carries the same hairline frame as the\n // intro/outro cards (family resemblance), a halftone dot field that ramps\n // along the diagonal, and the slash motif tucked under the countdown numeral,\n // so the scene reads as part of the title sequence rather than as missing\n // media. It deliberately ships NO corner mark and NO second numeral: the\n // header row and the numeral column already belong to the scene chrome, and a\n // giant ghost digit read as a rendering fault instead of a treatment.\n // The dot field runs y 396-1146 — the same region a clip would have filled,\n // captions included (they ride b-roll on every other scene, and a 64 px\n // caption with a 6 px black stroke sits over a 24 %-accent dot exactly as\n // happily as it sits over footage). It stops above the headline card's\n // highest possible top edge (y 1140). The slash motif and the numeral share\n // the left column; the section label owns y 252-370 on the right.\n const storyFallbackSvg = (idTag) => {\n let dots = '';\n for (let c = 0; c < 13; c += 1) {\n for (let r = 0; r < 16; r += 1) {\n const dx = 412 + c * 46;\n const dy = 396 + r * 50;\n const t = clamp(((dx - 412) / 552 + (1146 - dy) / 750) / 2, 0, 1);\n dots +=\n \"\";\n }\n }\n return (\n \"'\n );\n };\n\n const scrimSvg =\n \"';\n\n // ---- scenes -------------------------------------------------------------\n const kenBurns = Number(cfg.kenBurnsDepth == null ? 1.12 : cfg.kenBurnsDepth);\n const sceneMedia = Array.isArray(data.sceneMedia) ? data.sceneMedia : [];\n const scenes = [];\n let missingClips = 0;\n\n spans.forEach((span, i) => {\n const visible = Math.max(minScene, round(span.end - span.start));\n const isLast = i === spans.length - 1;\n const dur = round(visible + (isLast ? 0 : tDur));\n const isIntro = i === 0;\n const isOutro = i === spans.length - 1;\n\n if (isIntro) {\n const nLen = niche.length;\n const nSize = nLen <= 12 ? 108 : nLen <= 20 ? 92 : nLen <= 32 ? 72 : nLen <= 52 ? 58 : nLen <= 80 ? 48 : 40;\n const nLines = wrapLines(niche.toUpperCase(), nSize, 900, 0.74);\n const metaY = Math.min(1120, 480 + 66 + Math.round(nLines * nSize * 1.06) + 44);\n // The intro chip carries brandName, which is free-form Config copy. Box it\n // to the 900px safe column and ramp the type down so it stays one line and\n // inside the frame at any realistic length instead of growing without limit.\n // Budget: iLen * (iSize * 0.66 + iTrack) + 60px padding must stay under the\n // 900px column, so every step below is checked against that at its own\n // upper bound (54 chars at 16px = 846px, 90 chars at 14px wraps but still\n // cannot leave the box).\n const iLen = brandName.length;\n const iSize = iLen <= 20 ? 26 : iLen <= 30 ? 23 : iLen <= 42 ? 19 : iLen <= 54 ? 16 : 14;\n const iTrack = iLen <= 30 ? 6 : iLen <= 42 ? 5 : 4;\n scenes.push({\n id: 'intro',\n duration: dur,\n backgroundColor: bg,\n ...(transition && !isLast ? { transition, transitionDuration: tDur } : {}),\n visuals: [\n { type: 'SVG', width: 1080, height: 1920, track: 0, enterBegin: 0, exitEnd: dur, svg: brandPanelSvg('wnrIntro') },\n {\n type: 'TEXT', x: 540, y: 170, width: 900, anchor: 'top-center', track: 1, enterBegin: 0.1, enterEnd: 0.5, enterAnimation: 'fade', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" + brandUpper + '
',\n },\n {\n type: 'TEXT', x: 540, y: 480, width: 900, anchor: 'top-center', track: 2, enterBegin: 0.35, enterEnd: 0.9, enterAnimation: 'smoothup', exitEnd: dur,\n style: { fontFamily: font, color: paper },\n html: \"THE WEEK IN
\" +\n \"\" + nicheUpper + '
',\n },\n {\n type: 'TEXT', x: 540, y: metaY, width: 900, anchor: 'top-center', track: 3, enterBegin: 0.7, enterEnd: 1.15, enterAnimation: 'fade', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" + esc(dateline) + '
' +\n \"THE \" + (COUNT_WORDS[storyCount] || storyCount) + ' STORIES THAT MATTERED
',\n },\n ],\n });\n return;\n }\n\n if (isOutro) {\n const bLen = brandName.length;\n const bSize = bLen <= 14 ? 92 : bLen <= 22 ? 76 : bLen <= 34 ? 60 : 50;\n // A brand name long enough to wrap gets a narrower measure than the 900px\n // element, which breaks it into two balanced lines instead of one full\n // line plus a one-word orphan sitting edge to edge in the box.\n const bWidth = bLen <= 22 ? 900 : 780;\n const cLen = ctaText.length;\n const cSize = cLen <= 24 ? 34 : cLen <= 40 ? 28 : 24;\n scenes.push({\n id: 'outro',\n duration: dur,\n backgroundColor: bg,\n visuals: [\n { type: 'SVG', width: 1080, height: 1920, track: 0, enterBegin: 0, exitEnd: dur, svg: brandPanelSvg('wnrOutro') },\n {\n type: 'TEXT', x: 540, y: 520, width: 900, anchor: 'top-center', track: 1, enterBegin: 0.2, enterEnd: 0.7, enterAnimation: 'smoothup', exitEnd: dur,\n style: { fontFamily: font, color: paper },\n html: \"THAT IS YOUR WEEK
\" +\n \"\" + brandUpper + '
',\n },\n {\n type: 'TEXT', x: 540, y: 1230, anchor: 'top-center', track: 2, enterBegin: 0.6, enterEnd: 1.05, enterAnimation: 'circleopen', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" + esc(ctaText) + '
' +\n \"NEW ROUNDUP EVERY WEEK
\",\n },\n ],\n });\n return;\n }\n\n // ---- countdown story scene ---------------------------------------------\n const story = stories[i - 1];\n const rank = storyCount - (i - 1);\n const media = sceneMedia[i - 1] || null;\n const visuals = [];\n\n // Header collision guard: a long brand name shrinks the chip, and if chip\n // + dateline still cannot share the 900px header row, the dateline is\n // dropped on story scenes (the intro card already carries it).\n const chipFs = brandName.length <= 20 ? 22 : brandName.length <= 40 ? 18 : 15;\n const chipW = brandName.length * chipFs * 0.66 + 40;\n const dateW = dateline.length * 22 * 0.68;\n const showDateTag = chipW + dateW <= 860;\n\n let trackNo = 0;\n let hasBroll = false;\n if (media && media.kind === 'video' && media.src) {\n hasBroll = true;\n // videoEnd is measured in SOURCE time: a clip played at speed s covers\n // visible*s seconds of source. Slowing a short clip beats freezing it.\n const speed = media.duration && media.duration < visible\n ? clamp(round(media.duration / visible), 0.5, 1)\n : 1;\n const sourceWindow = round(visible * speed);\n visuals.push({\n type: 'VIDEO',\n src: media.src,\n resize: 'cover',\n position: 'center-center',\n anchor: 'center-center',\n volume: 0,\n videoBegin: 0,\n videoEnd: media.duration ? Math.min(media.duration, sourceWindow) : sourceWindow,\n ...(speed !== 1 ? { speed } : {}),\n zoom: { depth: kenBurns },\n track: trackNo++,\n });\n } else if (media && media.kind === 'image' && media.src) {\n hasBroll = true;\n visuals.push({\n type: 'IMAGE', src: media.src, resize: 'cover', position: 'center-center', anchor: 'center-center',\n exitEnd: dur, zoom: { depth: Math.max(kenBurns, 1.18) }, track: trackNo++,\n });\n } else {\n missingClips += 1;\n visuals.push({ type: 'SVG', width: 1080, height: 1920, track: trackNo++, enterBegin: 0, exitEnd: dur, svg: storyFallbackSvg('wnrFall' + rank) });\n }\n\n // The scrim exists to sit b-roll down under the captions and cards. The\n // fallback panel is already a dark designed surface, so scrimming it would\n // only wash out its own halftone field.\n if (hasBroll) {\n visuals.push({ type: 'SVG', width: 1080, height: 1920, track: trackNo++, enterBegin: 0, exitEnd: dur, svg: scrimSvg });\n }\n\n // Brand tag + dateline header.\n visuals.push({\n type: 'TEXT', x: 90, y: 96, width: 900, anchor: 'top-left', track: trackNo++, enterBegin: 0.1, enterEnd: 0.45, enterAnimation: 'fade', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" + brandUpper + '
',\n });\n if (showDateTag) {\n visuals.push({\n type: 'TEXT', x: 990, y: 104, anchor: 'top-right', track: trackNo++, enterBegin: 0.15, enterEnd: 0.5, enterAnimation: 'fade', exitEnd: dur,\n style: { fontFamily: font, color: '#FFFFFF' },\n html: \"\" + esc(dateline) + '
',\n });\n }\n\n // Giant countdown number.\n visuals.push({\n type: 'TEXT', x: 84, y: 214, anchor: 'top-left', track: trackNo++, enterBegin: 0.1, enterEnd: 0.55, enterAnimation: 'smoothright', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" + rank + '
' +\n \"\",\n });\n\n // Fallback scenes only: a right-aligned section label fills the void a clip\n // would have occupied. Boxed to 620px (x 370-990) so it can never reach the\n // numeral column, and ramped down by niche length so it stays within\n // y 252-370 — clear of the dateline above and the dot field below.\n if (!hasBroll) {\n const fLen = niche.length;\n const fSize = fLen <= 20 ? 34 : fLen <= 34 ? 30 : 26;\n visuals.push({\n type: 'TEXT', x: 680, y: 252, width: 620, anchor: 'top-center', track: trackNo++, enterBegin: 0.25, enterEnd: 0.8, enterAnimation: 'fade', exitEnd: dur,\n style: { fontFamily: font, color: accent },\n html: \"\" +\n \"THE WEEK IN
\" +\n \"\" + nicheUpper + '
',\n });\n }\n\n // Headline card with source tag; grows upward from a fixed baseline.\n const headline = clean(story.headline);\n const source = shortenSource(clean(story.source)).toUpperCase();\n const hLen = headline.length;\n const hSize = hLen <= 34 ? 62 : hLen <= 52 ? 56 : hLen <= 72 ? 50 : 44;\n const hLines = wrapLines(headline, hSize, 828, 0.58);\n const srcSize = source.length > 24 ? 20 : 22;\n // The source tag is a bordered chip INSIDE the card, so it loses the card\n // padding (72) plus its own (28); at 3 px letter-spacing every character\n // costs roughly 0.78 em + 3 px, which is what 0.95 em stands in for. A\n // long hyphenated domain wraps to two lines and the card must grow for it.\n const srcLines = source ? wrapLines(source, srcSize, 800, 0.95) : 0;\n const srcRow = source ? srcLines * (srcSize + 12) + 18 : 0;\n const cardH = 30 + srcRow + Math.round(hLines * hSize * 1.12) + 34;\n const cardY = clamp(1760 - cardH, 1140, 1560);\n visuals.push({\n type: 'TEXT', x: 90, y: cardY, width: 900, anchor: 'top-left', track: trackNo++, enterBegin: 0.3, enterEnd: 0.8, enterAnimation: 'smoothup', exitEnd: dur,\n style: { fontFamily: font, color: paper },\n html: \"\" +\n (source\n ? \"
\" + esc(source) + '
'\n : '') +\n \"
\" + esc(headline) + '
' +\n '