Enhances YouTube with dual language subtitles.
Version vom
// ==UserScript== // @name YtDLS: YouTube Dual Language Subtitle (Modified) // @name:zh-CN YtDLS: Youtube 双语字幕（改） // @name:zh-TW YtDLS: Youtube 雙語字幕（改） // @version 2.0.4 // @description Enhances YouTube with dual language subtitles. // @description:zh-CN 为YouTube添加双语字幕增强功能。 // @description:zh-TW 增強YouTube的雙語字幕功能。 // @author CY Fung // @author Coink Wang // @match https://www.youtube.com/* // @match https://m.youtube.com/* // @require https://cdn.jsdelivr.net/npm/[email protected]/dist/ajaxhook.min.js // @grant none // @unwrap // @allFrames true // @inject-into page // @run-at document-start // @namespace Y2BDoubleSubs // @license MIT // @supportURL https://github.com/cyfung1031/Y2BDoubleSubs/tree/translation-api // ==/UserScript== /* global ah */ /* original script: https://greatest.deepsurf.us/scripts/397363 based on v1.8.0 + PR#18 ( https://github.com/CoinkWang/Y2BDoubleSubs/pull/18 ) [v2.0.0] added m.youtube.com support based on two scripts (https://greatest.deepsurf.us/scripts/457476 & https://greatest.deepsurf.us/scripts/464879 ) which are fork from v1.8.0 */ (function () { let localeLangFn = () => document.documentElement.lang || navigator.language || 'en' // follow the language used in YouTube Page // localeLangFn = () => 'zh' // uncomment this line to define the language you wish here const Promise = (async () => { })().constructor const _ah = ah const fetch = window.fetch.bind(window) const pReady = Promise.resolve() pReady.then(() => { let enableFullWidthSpaceSeparation = true function encodeFullwidthSpace(text) { if (!enableFullWidthSpaceSeparation) return text return text.replace(/\n/g, '\n1\n').replace(/\u3000/g, '\n2\n') } function decodeFullwidthSpace(text) { if (!enableFullWidthSpaceSeparation) return text return text.replace(/\n2\n/g, '\u3000').replace(/\n1\n/g, '\n') } let requestDeferred = Promise.resolve() _ah.proxy({ onRequest: (config, handler) => { handler.next(config) }, onResponse: (response, handler) => { function defaultAction() { handler.resolve(response) } const o = {} try { /** @type {string} */ const originalReqUrl = response.config.url if (!originalReqUrl.includes('/api/timedtext') || originalReqUrl.includes('&translate_h00ked')) return defaultAction() let defaultJson = null if (response.response) { const jsonResponse = JSON.parse(response.response) if (jsonResponse.events) defaultJson = jsonResponse } if (defaultJson === null) return defaultAction() const localeLang = localeLangFn() const langIdx = originalReqUrl.indexOf('lang=') if (langIdx > 5) { // &key=yt8&lang=en&fmt=json3&xorb=2&xobt=3&xovt=3 // &key=yt8&lang=ja&fmt=json3&xorb=2&xobt=3&xovt=3 // &key=yt8&lang=ja&name=Romaji&fmt=json3&xorb=2&xobt=3 let ulc = originalReqUrl.charAt(langIdx - 1) if (ulc === '?' || ulc === '&') { let usp = new URLSearchParams(originalReqUrl.substring(langIdx)) let uspLang = usp.get('lang') let uspName = usp.get('name') if (uspName === 'Romaji') return defaultAction() if (typeof uspLang === 'string' && uspLang.toLocaleLowerCase() === localeLang.toLocaleLowerCase()) return defaultAction() } } const lines = [] for (const event of defaultJson.events) { for (const seg of event.segs) { if (seg && typeof seg.utf8 === 'string') { lines.push(...seg.utf8.split('\n')) } } } if (lines.length === 0) return defaultAction() let linesText = lines.join('\n') linesText = encodeFullwidthSpace(linesText) const q = encodeURIComponent(linesText) o.defaultJson = defaultJson o.lines = lines o.requestURL = `https://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=${localeLang}&dj=1&dt=t&dt=rm&q=${q}` } catch (e) { console.warn(e) defaultAction() } function fetchData() { return new Promise(requestDeferredResolve => { fetch(o.requestURL, { method: "GET", headers: { "Accept": "application/json", "Accept-Encoding": "gzip, deflate, br" }, credentials: "omit", referrerPolicy: "no-referrer", redirect: "error", keepalive: false, cache: "default" }) .then(res => { requestDeferredResolve() return res.json() }) .then(result => { let resultText = result.sentences.map((function (s) { return "trans" in s ? s.trans : "" })).join("") resultText = decodeFullwidthSpace(resultText) return resultText.split("\n") }) .then(translatedLines => { const { lines, defaultJson } = o o.lines = null o.defaultJson = null const addTranslation = (line, idx) => { if (line !== lines[i + idx]) return line let translated = translatedLines[i + idx] if (line === translated) return line return `${line}\n${translated}` } let i = 0 for (const event of defaultJson.events) { for (const seg of event.segs) { if (seg && typeof seg.utf8 === 'string') { let s = seg.utf8.split('\n') let st = s.map(addTranslation) seg.utf8 = st.join('\n') i += s.length } } } response.response = JSON.stringify(defaultJson) handler.resolve(response) }).catch(e => { console.warn(e) defaultAction() }) }) } requestDeferred = requestDeferred.then(fetchData) } }) }) })();
