sion123
c878abc39b
将项目中的 `narration` 字段统一重命名为 `script`，并新增 `getAudioDurationSec` 函数通过 `ffprobe` 实际测量音频和视频文件的时长，替代 Manifest 中的估计值，提高时间线组装的准确性。同时优化字幕逻辑，仅在有 TTS 音频时调整视频速度。
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
/**
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* Phase: tts — 语音合成
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*
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* 使用通义千问 TTS 生成旁白音频
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*/
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const path = require('path')
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const { saveManifest, ensureDir, log, getManifestDir } = require('./pipeline-utils')
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async function phaseTts(manifest, manifestPath, options = {}) {
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const dir = getManifestDir(manifestPath)
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const audioDir = path.join(dir, 'audio')
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ensureDir(audioDir)
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const { synthesize } = require('../qwen-tts')
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const items = manifest.items.filter(it =>
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it.status === 'done' && (it.script || it.text) && !it.audio
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)
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if (items.length === 0) { log('tts', '无待处理 item，跳过'); return }
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log('tts', `共 ${items.length} 段`)
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for (let i = 0; i < items.length; i++) {
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const item = items[i]
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const idx = i + 1
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try {
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const { filePath, duration } = await synthesize(item.script || item.text, {
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outputDir: audioDir,
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id: item.id || idx,
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voice: manifest.ttsVoice || undefined,
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instruction: manifest.ttsInstruction || undefined,
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})
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item.audio = path.relative(dir, filePath).replace(/\\/g, '/')
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item.audioDuration = Math.round(duration * 1000) / 1000
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log('tts', `[${idx}/${items.length}] ${duration.toFixed(1)}s: ${(item.script || item.text).substring(0, 30)}...`)
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} catch (err) {
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item.status = 'failed'
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item.error = `TTS失败: ${err.message}`
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log('tts', `[${idx}/${items.length}] 失败: ${err.message}`)
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}
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saveManifest(manifestPath, manifest)
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}
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}
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module.exports = { phaseTts }
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