sion123
4d5c8cb96d
将 monolith 的 capcut_assemble.js 重构为核心编排器，提取基础设施层（capcut-api）、时间线算法（capcut-timeline）和轨道操作（capcut-tracks）为独立模块。此拆分使 Agent 未来对字幕风格、Ken Burns、转场、特效等调整只需关注 capcut-tracks.js，无需理解全流程编排逻辑。
622 lines
20 KiB
JavaScript
622 lines
20 KiB
JavaScript
/**
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* CapCut 轨道操作
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*
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* 所有 add* 函数 + 转场策略 + 账号配置读取。
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* Agent 修改字幕风格、Ken Burns、转场、特效等只需关注此文件。
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*/
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const path = require('path')
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const { api, US } = require('./capcut-api')
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const { splitTextIntoSentences, loadAccountConfig: loadAccountConfigFromUtils } = require('./pipeline-utils')
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// ============================================================================
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// 账号配置读取
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// ============================================================================
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function loadAccountConfig(manifest) {
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const account = manifest.account
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if (!account) return {}
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try { return loadAccountConfigFromUtils(account) } catch { return {} }
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}
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function loadSubtitleStyle(manifest) {
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return loadAccountConfig(manifest).capcut?.subtitleStyle || {}
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}
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function loadKeywordStyle(manifest) {
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return loadAccountConfig(manifest).capcut?.keywordStyle || {}
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}
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function loadTransitions(manifest) {
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return loadAccountConfig(manifest).capcut?.transitions || null
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}
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function applyAnimationProps(cap, style = {}) {
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if (style.inAnimation) cap.in_animation = style.inAnimation
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if (style.outAnimation) cap.out_animation = style.outAnimation
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if (style.inAnimDuration) cap.in_animation_duration = style.inAnimDuration
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if (style.outAnimDuration) cap.out_animation_duration = style.outAnimDuration
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}
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// ============================================================================
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// 转场策略
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// ============================================================================
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function getTransition(item, index, totalCount, transitionConfig, allItems, timeline) {
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if (!transitionConfig) return { name: '', duration: 0 }
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const defaultT = transitionConfig.default || { name: '闪白', duration: 150000 }
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const strategy = transitionConfig.strategy || 'fixed'
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if (index === 0) return { name: '', duration: 0 }
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if (index >= totalCount - 1) return { name: '', duration: 0 }
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switch (strategy) {
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case 'director': {
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const ref = (item.directorRef || '').toLowerCase()
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const byDirector = transitionConfig.byDirector || {}
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return byDirector[ref] || defaultT
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}
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case 'rhythm': {
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const rules = transitionConfig.byPosition || {}
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if (index >= totalCount - 2) return rules.closing || defaultT
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if (allItems && index > 0) {
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const prev = allItems[index - 1]
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if (item.directorRef && prev.directorRef && item.directorRef !== prev.directorRef) {
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return rules.keypoint || defaultT
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}
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if (item.keyword && !prev.keyword) {
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return rules.keypoint || defaultT
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}
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}
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if (timeline && timeline.length > 0) {
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const elapsed = timeline[index].start
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let lastTransStart = 0
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for (let pi = index - 1; pi >= 1; pi--) {
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const p = allItems[pi]
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const pp = pi > 0 ? allItems[pi - 1] : null
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if (pi >= totalCount - 2) { lastTransStart = timeline[pi].start; break }
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if (pp && p.directorRef && pp.directorRef && p.directorRef !== pp.directorRef) {
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lastTransStart = timeline[pi].start; break
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}
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if (p.keyword && pp && !pp.keyword) { lastTransStart = timeline[pi].start; break }
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}
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if (elapsed - lastTransStart >= 8000000) return rules.body || defaultT
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} else {
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if (index % 3 === 0) return rules.body || defaultT
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}
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return { name: '', duration: 0 }
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}
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case 'fixed':
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default:
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return defaultT
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}
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}
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// ============================================================================
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// 入场动画映射
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// ============================================================================
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const DIRECTOR_ANIMATIONS = {
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tarantino: '动感放大',
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kitano: '轻微放大',
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fincher: '渐显',
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}
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function getAnimationForDirector(directorRef, defaultAnimation) {
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if (!directorRef) return defaultAnimation
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return DIRECTOR_ANIMATIONS[directorRef.toLowerCase()] || defaultAnimation
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}
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// ============================================================================
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// Ken Burns 关键帧动画
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// ============================================================================
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const KEN_BURNS_FALLBACK = {
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default: { startScale: 1.0, scaleRate: 0.8, panXRate: 0, panYRate: 0 },
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byDirector: {
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tarantino: { startScale: 1.0, scaleRate: 0.9, panXRate: 0, panYRate: -0.3 },
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kitano: { startScale: 1.03, scaleRate: 0.5, panXRate: 0.4, panYRate: 0 },
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fincher: { startScale: 1.0, scaleRate: 0.4, panXRate: 0, panYRate: 0 },
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},
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}
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const KEN_BURNS_MAX_SCALE = 1.20
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function loadKenBurns(manifest) {
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const cfg = loadAccountConfig(manifest).capcut?.kenBurns
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if (cfg && cfg.default) return cfg
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return KEN_BURNS_FALLBACK
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}
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function getKenBurnsProfile(item, kbConfig) {
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const director = (item.directorRef || '').toLowerCase()
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const byDirector = kbConfig.byDirector || {}
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return byDirector[director] || kbConfig.default
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}
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async function addKenBurns(draftUrl, segmentIds, items, timeline, manifest) {
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if (!segmentIds || segmentIds.length === 0) {
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console.log(' 无 segment IDs，跳过 Ken Burns')
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return
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}
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const kbConfig = loadKenBurns(manifest)
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if (kbConfig.enabled === false) {
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console.log(' Ken Burns 已禁用（account.json kenBurns.enabled=false）')
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return
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}
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const keyframes = []
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for (let i = 0; i < segmentIds.length; i++) {
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const segId = segmentIds[i]
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const item = items[i]
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const tl = timeline[i]
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if (!segId || !tl) continue
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const profile = getKenBurnsProfile(item, kbConfig)
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const durSec = tl.duration / US
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const segDur = tl.duration
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const startScale = profile.startScale || 1.0
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const scaleRate = profile.scaleRate != null ? profile.scaleRate : 0.8
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const endScale = Math.min(startScale + scaleRate * durSec / 100, KEN_BURNS_MAX_SCALE)
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keyframes.push(
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{ segment_id: segId, property: 'UNIFORM_SCALE', offset: 0, value: startScale },
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{ segment_id: segId, property: 'UNIFORM_SCALE', offset: segDur, value: endScale },
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)
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const panXRate = profile.panXRate || 0
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const panYRate = profile.panYRate || 0
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if (panXRate !== 0) {
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const panX = panXRate * durSec
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keyframes.push(
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{ segment_id: segId, property: 'KFTypePositionX', offset: 0, value: 0 },
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{ segment_id: segId, property: 'KFTypePositionX', offset: segDur, value: panX },
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)
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}
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if (panYRate !== 0) {
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const panY = panYRate * durSec
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keyframes.push(
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{ segment_id: segId, property: 'KFTypePositionY', offset: 0, value: 0 },
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{ segment_id: segId, property: 'KFTypePositionY', offset: segDur, value: panY },
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)
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}
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}
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if (keyframes.length === 0) {
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console.log(' 无关键帧生成，跳过')
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return
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}
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const res = await api('add_keyframes', {
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draft_url: draftUrl,
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keyframes: JSON.stringify(keyframes),
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})
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console.log(` 已添加 ${res.keyframes_added || keyframes.length} 个 Ken Burns 关键帧 (${segmentIds.length} 段)`)
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}
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// ============================================================================
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// 添加图片
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// ============================================================================
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async function addImages(draftUrl, items, imgUrls, timeline, width, height, animation = '', transitionConfig = null) {
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const imageInfos = items.map((item, i) => {
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const url = imgUrls[item.file]
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if (!url) throw new Error(`图片 ${item.file} 未上传成功，无法添加`)
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const tl = timeline[i]
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const t = getTransition(item, i, items.length, transitionConfig, items, timeline)
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const info = {
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image_url: url,
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width,
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height,
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start: tl.start,
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end: tl.end,
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duration: tl.duration,
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transition: t.name,
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transition_duration: t.duration,
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}
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const itemAnimation = getAnimationForDirector(item.directorRef, animation)
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if (itemAnimation) {
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const parts = itemAnimation.split('+').map(p => p.trim()).filter(Boolean)
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const loopNames = ['缩放', '缩放 II', '回弹伸缩', '旋转伸缩']
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const loopAnims = parts.filter(p => loopNames.includes(p))
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const inAnims = parts.filter(p => !loopNames.includes(p))
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if (loopAnims.length > 0) info.loop_animation = loopAnims.join('|')
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if (inAnims.length > 0) info.in_animation = inAnims.join('|')
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}
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return info
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})
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console.log(` 一次性添加 ${imageInfos.length} 张图片...`)
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const res = await api('add_images', {
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draft_url: draftUrl,
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image_infos: JSON.stringify(imageInfos),
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alpha: 1, scale_x: 1, scale_y: 1,
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transform_x: 0, transform_y: 0,
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}, 300000)
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const allSegmentIds = res.segment_ids || []
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console.log(` 已添加 ${items.length} 张图片`)
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return allSegmentIds
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}
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// ============================================================================
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// 添加视频
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// ============================================================================
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async function addVideos(draftUrl, inputDir, items, timeline, width, height, transitionConfig = null) {
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const videoInfos = items.map((item, i) => {
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const tl = timeline[i]
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const t = getTransition(item, i, items.length, transitionConfig, items, timeline)
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return {
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video_url: item.videoUrl || (item.video ? path.resolve(inputDir, item.video) : null) || item.url || path.resolve(inputDir, item.file),
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width,
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height,
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start: tl.start,
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end: tl.end,
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duration: tl.duration,
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mask: '',
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transition: t.name,
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transition_duration: t.duration,
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volume: item.volume || 1,
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}
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})
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try {
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const res = await api('add_videos', {
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draft_url: draftUrl,
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video_infos: JSON.stringify(videoInfos),
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alpha: 1, scale_x: 1, scale_y: 1,
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transform_x: 0, transform_y: 0,
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scene_timelines: [],
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})
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console.log(` 已添加 ${items.length} 个视频片段（全量）`)
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return res.segment_ids || []
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} catch (err) {
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if (!err.message.includes('504') && !err.message.includes('timeout')) throw err
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console.log(` 全量提交超时，降级为分批添加...`)
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}
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const BATCH_SIZE = 3
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const allSegmentIds = []
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for (let i = 0; i < videoInfos.length; i += BATCH_SIZE) {
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const batch = videoInfos.slice(i, i + BATCH_SIZE)
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const batchNum = Math.floor(i / BATCH_SIZE) + 1
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const totalBatches = Math.ceil(videoInfos.length / BATCH_SIZE)
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console.log(` 分批 [${batchNum}/${totalBatches}] 添加 ${batch.length} 个片段...`)
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const res = await api('add_videos', {
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draft_url: draftUrl,
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video_infos: JSON.stringify(batch),
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alpha: 1, scale_x: 1, scale_y: 1,
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transform_x: 0, transform_y: 0,
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scene_timelines: [],
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})
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if (res.segment_ids) allSegmentIds.push(...res.segment_ids)
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}
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console.log(` 已添加 ${items.length} 个视频片段（分批）`)
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return allSegmentIds
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}
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// ============================================================================
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// 添加 TTS 配音
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// ============================================================================
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async function addVoiceover(draftUrl, inputDir, items, timeline, audioUrls = {}) {
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const audioItems = items.filter(item => item.audio || (item.segments && item.segments.length > 0))
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if (audioItems.length === 0) {
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console.log(' 无 TTS 音频文件，跳过')
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return
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}
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const audioInfos = []
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const resolveAudio = (relPath) => {
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if (relPath.startsWith('http')) return relPath
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if (audioUrls[relPath]) return audioUrls[relPath]
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return path.isAbsolute(relPath) ? relPath : path.resolve(inputDir, relPath)
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}
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for (let i = 0; i < items.length; i++) {
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const item = items[i]
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const tl = timeline[i]
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if (item.segments && item.segments.length > 0) {
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let currentTime = tl.start
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for (let si = 0; si < item.segments.length; si++) {
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const seg = item.segments[si]
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const audioUrl = resolveAudio(seg.audio)
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const segDurUs = (seg.duration || 0) * US
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if (segDurUs <= 0) continue
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const isLast = si === item.segments.length - 1
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const endTime = isLast ? tl.end : currentTime + segDurUs
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audioInfos.push({
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audio_url: audioUrl,
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start: currentTime,
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end: endTime,
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duration: endTime - currentTime,
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volume: 1.0,
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})
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currentTime = endTime
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}
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} else if (item.audio) {
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const audioUrl = resolveAudio(item.audio)
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const audioDurUs = item.audioDuration ? item.audioDuration * US : tl.duration
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audioInfos.push({
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audio_url: audioUrl,
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start: tl.start,
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end: tl.start + audioDurUs,
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duration: audioDurUs,
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volume: 1.0,
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})
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}
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}
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if (audioInfos.length === 0) {
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console.log(' 无可用音频，跳过配音')
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return
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}
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await api('add_audios', {
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draft_url: draftUrl,
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audio_infos: JSON.stringify(audioInfos),
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})
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const ossCount = audioInfos.filter(a => a.audio_url.startsWith('http')).length
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console.log(` 已添加 ${audioInfos.length} 段 TTS 配音 (${ossCount > 0 ? `${ossCount} 段 OSS + ` : ''}${audioInfos.length - ossCount} 段本地)`)
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}
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// ============================================================================
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// 添加 BGM
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// ============================================================================
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async function addBGM(draftUrl, bgmUrl, totalDurationUs) {
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let audioDuration = totalDurationUs
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try {
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const durRes = await api('get_audio_duration', { mp3_url: bgmUrl })
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if (durRes.duration) audioDuration = durRes.duration
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} catch (_) {}
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const fadeIn = 500000
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const fadeOut = 1000000
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await api('add_audios', {
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draft_url: draftUrl,
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audio_infos: JSON.stringify([{
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audio_url: bgmUrl,
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duration: audioDuration,
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end: Math.min(audioDuration, totalDurationUs),
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start: 0,
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volume: 0.15,
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fade_in_duration: fadeIn,
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fade_out_duration: fadeOut,
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}]),
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})
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console.log(` 已添加 BGM (${(audioDuration / US).toFixed(1)}s, fade 0.5s/1s)`)
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}
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// ============================================================================
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// 添加字幕
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// ============================================================================
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async function addSubtitles(draftUrl, items, timeline, style = {}, split = false) {
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const captions = []
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const animStyle = {
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inAnimation: style.inAnimation || '',
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outAnimation: style.outAnimation || '',
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inAnimDuration: style.inAnimationDuration || null,
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outAnimDuration: style.outAnimationDuration || null,
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}
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for (let i = 0; i < items.length; i++) {
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const item = items[i]
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const text = item.script || item.text || item.caption || ''
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if (!text) continue
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const tl = timeline[i]
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if (split) {
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if (item.segments && item.segments.length > 0) {
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let currentTime = tl.start
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for (let si = 0; si < item.segments.length; si++) {
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const seg = item.segments[si]
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const segDurUs = (seg.duration || 0) * US
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if (segDurUs <= 0) continue
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const isLast = si === item.segments.length - 1
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const endTime = isLast ? tl.end : currentTime + segDurUs
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const cap = { start: currentTime, end: endTime, text: seg.text }
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applyAnimationProps(cap, animStyle)
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captions.push(cap)
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currentTime = endTime
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}
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} else {
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const sentences = splitTextIntoSentences(text)
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if (sentences.length === 0) continue
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const totalDuration = tl.end - tl.start
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const totalChars = sentences.reduce((sum, s) => sum + s.length, 0)
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let currentTime = tl.start
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sentences.forEach((sentence, idx) => {
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const charRatio = sentence.length / totalChars
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let duration = Math.round(totalDuration * charRatio)
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if (idx === sentences.length - 1) {
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duration = tl.end - currentTime
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}
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duration = Math.max(duration, 500000)
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const cap = {
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start: currentTime,
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end: currentTime + duration,
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text: sentence,
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}
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applyAnimationProps(cap, animStyle)
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captions.push(cap)
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currentTime += duration
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})
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}
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} else {
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const cap = {
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start: tl.start,
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end: tl.end,
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text,
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}
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applyAnimationProps(cap, animStyle)
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captions.push(cap)
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}
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}
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if (captions.length === 0) {
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console.log(' 无字幕内容，跳过')
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return
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}
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await api('add_captions', {
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draft_url: draftUrl,
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captions: JSON.stringify(captions),
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font: style.font || null,
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font_size: style.fontSize || 15,
|
||
text_color: style.color || '#ffffff',
|
||
alignment: 1,
|
||
bold: style.bold || false,
|
||
italic: false,
|
||
underline: false,
|
||
has_shadow: style.hasShadow || false,
|
||
shadow_info: style.shadowAlpha ? {
|
||
shadow_alpha: style.shadowAlpha,
|
||
shadow_color: style.shadowColor || '#000000',
|
||
shadow_diffuse: 15,
|
||
shadow_distance: 5,
|
||
shadow_angle: -45,
|
||
} : undefined,
|
||
letter_spacing: style.letterSpacing || 0,
|
||
line_spacing: style.lineSpacing || 0,
|
||
alpha: style.alpha || 1,
|
||
scale_x: 1, scale_y: 1,
|
||
transform_x: 0,
|
||
transform_y: style.transformY || 0,
|
||
style_text: 0,
|
||
})
|
||
|
||
console.log(` 已添加 ${captions.length} 条字幕${split ? ' (分句模式)' : ''} (字体: ${style.font || '默认'}, 动画: ${animStyle.inAnimation || '无'} → ${animStyle.outAnimation || '无'})`)
|
||
}
|
||
|
||
// ============================================================================
|
||
// 添加关键字氛围词
|
||
// ============================================================================
|
||
|
||
async function addKeywordOverlays(draftUrl, items, timeline, style = {}) {
|
||
const keywordItems = items.filter(item => item.keyword)
|
||
if (keywordItems.length === 0) {
|
||
console.log(' 无关键字，跳过')
|
||
return
|
||
}
|
||
|
||
const captions = []
|
||
for (let i = 0; i < items.length; i++) {
|
||
const item = items[i]
|
||
if (!item.keyword) continue
|
||
const tl = timeline[i]
|
||
|
||
const cap = {
|
||
start: tl.start,
|
||
end: tl.end,
|
||
text: item.keyword,
|
||
}
|
||
applyAnimationProps(cap, style)
|
||
|
||
captions.push(cap)
|
||
}
|
||
|
||
if (captions.length === 0) return
|
||
|
||
await api('add_captions', {
|
||
draft_url: draftUrl,
|
||
captions: JSON.stringify(captions),
|
||
font: style.font || null,
|
||
font_size: style.fontSize || 60,
|
||
text_color: style.color || '#FFFFFF',
|
||
alignment: 1,
|
||
bold: style.bold || false,
|
||
has_shadow: style.hasShadow || false,
|
||
shadow_info: style.shadowAlpha ? {
|
||
shadow_alpha: style.shadowAlpha,
|
||
shadow_color: style.shadowColor || '#000000',
|
||
shadow_diffuse: 15,
|
||
shadow_distance: 5,
|
||
shadow_angle: -45,
|
||
} : undefined,
|
||
alpha: style.alpha || 1,
|
||
scale_x: 1, scale_y: 1,
|
||
transform_x: 0,
|
||
transform_y: style.transformY || 0,
|
||
text_effect: style.textEffect || null,
|
||
})
|
||
console.log(` 已添加 ${captions.length} 个关键字氛围词 (效果: ${style.textEffect || '无'})`)
|
||
}
|
||
|
||
// ============================================================================
|
||
// 添加特效
|
||
// ============================================================================
|
||
|
||
async function addEffects(draftUrl, effectsStr, totalDurationUs) {
|
||
const effectNames = effectsStr.split(',').map(s => s.trim()).filter(Boolean)
|
||
const effectInfos = effectNames.map(name => ({
|
||
effect_title: name,
|
||
start: 0,
|
||
end: totalDurationUs,
|
||
}))
|
||
|
||
await api('add_effects', {
|
||
draft_url: draftUrl,
|
||
effect_infos: JSON.stringify(effectInfos),
|
||
})
|
||
|
||
console.log(` 已添加: ${effectNames.join(', ')}`)
|
||
}
|
||
|
||
// ============================================================================
|
||
// 添加滤镜
|
||
// ============================================================================
|
||
|
||
async function addFilter(draftUrl, filterStr, totalDurationUs) {
|
||
const [name, intensity] = filterStr.split(':')
|
||
await api('add_filters', {
|
||
draft_url: draftUrl,
|
||
filter_infos: JSON.stringify([{
|
||
filter_title: (name || '').trim(),
|
||
start: 0,
|
||
end: totalDurationUs,
|
||
intensity: parseFloat(intensity) || 50,
|
||
}]),
|
||
})
|
||
console.log(` 已添加: ${(name || '').trim()} 强度 ${intensity || 50}`)
|
||
}
|
||
|
||
module.exports = {
|
||
loadAccountConfig,
|
||
loadSubtitleStyle,
|
||
loadKeywordStyle,
|
||
loadKenBurns,
|
||
loadTransitions,
|
||
getTransition,
|
||
addImages,
|
||
addVideos,
|
||
addKenBurns,
|
||
addVoiceover,
|
||
addBGM,
|
||
addSubtitles,
|
||
addKeywordOverlays,
|
||
addEffects,
|
||
addFilter,
|
||
}
|