基于大语言模型检测B站视频中的植入广告
当前为
// ==UserScript==
// @name VideoAdGuard
// @namespace https://github.com/Warma10032/VideoAdGuard
// @version 1.1.0
// @description 基于大语言模型检测B站视频中的植入广告
// @author Warma10032
// @match *://*.bilibili.com/video/*
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// @connect api.bilibili.com
// @connect open.bigmodel.cn
// @run-at document-end
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// 存储设置的默认值
const DEFAULT_API_URL = 'https://open.bigmodel.cn/api/paas/v4/chat/completions';
const DEFAULT_MODEL = 'glm-4-flash';
// 工具类 - WBI 签名
const WbiUtils = {
mixinKeyEncTab: [
46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,
36, 20, 34, 44, 52
],
getMixinKey(orig) {
return this.mixinKeyEncTab
.map(i => orig[i])
.join('')
.slice(0, 32);
},
// 简化版的 MD5 函数 (需要外部库支持)
md5(text) {
// 简单实现，实际使用时可能需要引入外部库
let hash = 0;
for (let i = 0; i < text.length; i++) {
hash = ((hash << 5) - hash) + text.charCodeAt(i);
hash |= 0;
}
return hash.toString(16);
},
async getWbiKeys() {
const wbiCache = GM_getValue('wbi_cache');
const today = new Date().setHours(0, 0, 0, 0);
if (wbiCache && wbiCache.timestamp >= today) {
return [wbiCache.img_key, wbiCache.sub_key];
}
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'GET',
url: 'https://api.bilibili.com/x/web-interface/nav',
headers: {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
'Referer': 'https://www.bilibili.com/'
},
onload: (response) => {
try {
const data = JSON.parse(response.responseText);
if (data.code !== 0) {
reject(new Error(data.message));
return;
}
const imgUrl = data.data.wbi_img.img_url;
const subUrl = data.data.wbi_img.sub_url;
const imgKey = imgUrl.substring(imgUrl.lastIndexOf('/') + 1, imgUrl.lastIndexOf('.'));
const subKey = subUrl.substring(subUrl.lastIndexOf('/') + 1, subUrl.lastIndexOf('.'));
const cache = {
img_key: imgKey,
sub_key: subKey,
timestamp: today
};
GM_setValue('wbi_cache', cache);
resolve([imgKey, subKey]);
} catch (error) {
reject(error);
}
},
onerror: reject
});
});
},
async encWbi(params) {
const [imgKey, subKey] = await this.getWbiKeys();
const mixinKey = this.getMixinKey(imgKey + subKey);
const currTime = Math.floor(Date.now() / 1000);
const newParams = {
...params,
wts: currTime
};
// 按照key排序
const query = Object.keys(newParams)
.sort()
.map(key => {
// 过滤特殊字符
const value = newParams[key].toString()
.replace(/[\u0000-\u0008\u000B\u000C\u000E-\u001F\u007F-\u009F]/g, '')
.replace(/[&?:\/=]/g, '');
return `${key}=${encodeURIComponent(value)}`;
})
.join('&');
const wbiSign = this.md5(query + mixinKey);
return {
...newParams,
w_rid: wbiSign
};
}
};
// B站服务类
const BilibiliService = {
async fetchWithCookie(url, params = {}) {
const queryString = new URLSearchParams(params).toString();
const fullUrl = `${url}?${queryString}`;
console.log('[BilibiliService] Fetching URL:', fullUrl);
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'GET',
url: fullUrl,
headers: {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
'Referer': 'https://www.bilibili.com/'
},
onload: (response) => {
try {
const data = JSON.parse(response.responseText);
console.log('[BilibiliService] Response data:', data);
if (data.code !== 0) {
reject(new Error(data.message));
return;
}
resolve(data.data);
} catch (error) {
reject(error);
}
},
onerror: reject
});
});
},
async getVideoInfo(bvid) {
console.log('[BilibiliService] Getting video info for bvid:', bvid);
const data = await this.fetchWithCookie(
'https://api.bilibili.com/x/web-interface/view',
{ bvid }
);
console.log('[BilibiliService] Video info result:', data);
return data;
},
async getComments(bvid) {
console.log('[BilibiliService] Getting comments for bvid:', bvid);
const data = await this.fetchWithCookie(
'https://api.bilibili.com/x/v2/reply',
{ oid: bvid, type: 1 }
);
console.log('[BilibiliService] Comments result:', data);
return data;
},
async getPlayerInfo(bvid, cid) {
console.log('[BilibiliService] Getting player info for bvid:', bvid, 'cid:', cid);
const params = { bvid, cid };
const signedParams = await WbiUtils.encWbi(params);
const data = await this.fetchWithCookie(
'https://api.bilibili.com/x/player/wbi/v2',
signedParams
);
console.log('[BilibiliService] Player info result:', data);
return data;
},
async getCaptions(url) {
console.log('[BilibiliService] Getting captions from URL:', url);
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'GET',
url: url,
onload: (response) => {
try {
const data = JSON.parse(response.responseText);
console.log('[BilibiliService] Captions result:', data);
resolve(data);
} catch (error) {
reject(error);
}
},
onerror: reject
});
});
}
};
// AI 服务类
const AIService = {
async analyze(videoInfo) {
console.log('开始分析视频信息:', videoInfo);
const apiKey = this.getApiKey();
if (!apiKey) {
throw new Error('未设置API密钥');
}
console.log('成功获取API密钥');
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'POST',
url: this.getApiUrl(),
headers: {
'Content-Type': 'application/json',
'Authorization': `Bearer ${apiKey}`
},
data: JSON.stringify({
model: this.getModel(),
messages: [
{
'role': 'system',
'content': '你是一个敏感的视频观看者，能根据视频的连贯性改变和宣传推销类内容，找出视频中可能存在的植入广告。内容如果和主题相关，即使是推荐/评价也可能只是分享而不是广告，重点要看有没有提到通过视频博主可以受益的渠道进行购买。'
},
{
'role': 'user',
'content': this.buildPrompt(videoInfo)
}
],
response_format: { 'type': 'json_object' },
temperature: 0.1,
max_tokens: 1024
}),
onload: (response) => {
try {
const data = JSON.parse(response.responseText);
console.log('收到API响应:', data);
resolve(JSON.parse(data.choices[0].message.content));
} catch (error) {
reject(error);
}
},
onerror: reject
});
});
},
buildPrompt(videoInfo) {
console.log('构建提示词，输入数据:', videoInfo);
const prompt = `视频的标题和置顶评论如下，可供参考判断是否有植入广告。如果置顶评论中有购买链接，则肯定有广告，同时可以根据置顶评论的内容锁定视频中广告的位置。
视频标题：${videoInfo.title}
置顶评论：${videoInfo.topComment || '无'}
下面我会给你这个视频的字幕字典，形式为 index: context. 请你完整地找出其中的植入广告，返回json格式的数据。内容如果和主题相关，即使是推荐/评价也可能只是分享而不是广告，重点要看有没有提到通过视频博主可以受益的渠道进行购买。一般来说视频是没有广告的，但也有小部分会植入一段广告，极少部分是多段广告。
字幕内容：${JSON.stringify(videoInfo.captions)}
先返回'exist': bool。true表示存在植入广告，false表示不存在植入广告。
再返回'index_lists': list[list[int]]。二维数组，行数表示广告的段数，一般来说视频是没有广告的，但也有小部分会植入一段广告，极少部分是多段广告。每一行是长度为2的数组[start, end]，表示一段广告的开头结尾，start和end是字幕的index。`;
return prompt;
},
getApiUrl() {
return GM_getValue('apiUrl', DEFAULT_API_URL);
},
getApiKey() {
return GM_getValue('apiKey', null);
},
getModel() {
return GM_getValue('model', DEFAULT_MODEL);
}
};
// 广告检测器类
const AdDetector = {
adDetectionResult: null,
adTimeRanges: [],
async getCurrentBvid() {
const match = window.location.pathname.match(/\/video\/(BV[\w]+)/);
if (!match) throw new Error('未找到视频ID');
return match[1];
},
async analyze() {
try {
// 移除已存在的跳过按钮
const existingButton = document.querySelector('.skip-ad-button10032');
if (existingButton) {
existingButton.remove();
}
const bvid = await this.getCurrentBvid();
// 获取视频信息
const videoInfo = await BilibiliService.getVideoInfo(bvid);
const comments = await BilibiliService.getComments(bvid);
const playerInfo = await BilibiliService.getPlayerInfo(bvid, videoInfo.cid);
// 获取字幕
if (!playerInfo.subtitle?.subtitles?.length) {
console.log('无字幕');
this.adDetectionResult = '当前视频无字幕，无法检测';
return;
}
const captionsUrl = 'https:' + playerInfo.subtitle.subtitles[0].subtitle_url;
const captionsData = await BilibiliService.getCaptions(captionsUrl);
// 处理数据
const captions = {};
captionsData.body.forEach((caption, index) => {
captions[index] = caption.content;
});
// AI分析
const result = await AIService.analyze({
title: videoInfo.title,
topComment: comments.upper?.top?.content?.message || null,
captions
});
if (result.exist) {
console.log('检测到广告片段:', JSON.stringify(result.index_lists));
const second_lists = this.index2second(result.index_lists, captionsData.body);
this.adTimeRanges = second_lists;
this.adDetectionResult = `发现${second_lists.length}处广告：${
second_lists.map(([start, end]) => `${this.second2time(start)}~${this.second2time(end)}`).join(' | ')
}`;
// 注入跳过按钮
this.injectSkipButton();
// 显示通知
this.showNotification(this.adDetectionResult);
} else {
this.adDetectionResult = '无广告内容';
}
} catch (error) {
console.error('分析失败:', error);
this.adDetectionResult = '分析失败：' + error.message;
}
},
index2second(indexLists, captions) {
// 直接生成时间范围列表
const time_lists = indexLists.map(list => {
const start = captions[list[0]]?.from || 0;
const end = captions[list[list.length - 1]]?.to || 0;
return [start, end];
});
return time_lists;
},
second2time(seconds) {
const hour = Math.floor(seconds / 3600);
const min = Math.floor((seconds % 3600) / 60);
const sec = Math.floor(seconds % 60);
return `${hour > 0 ? hour + ':' : ''}${min.toString().padStart(2, '0')}:${sec.toString().padStart(2, '0')}`;
},
injectSkipButton() {
const player = document.querySelector('.bpx-player-control-bottom');
if (!player) return;
const skipButton = document.createElement('button');
skipButton.className = 'skip-ad-button10032';
skipButton.textContent = '跳过广告';
skipButton.style.cssText = `
font-size: 14px;
position: absolute;
right: 20px;
bottom: 100px;
z-index: 999;
padding: 4px 4px;
color: #000000;
font-weight: bold;
background: rgba(255, 255, 255, 0.7);
border: none;
border-radius: 4px;
cursor: pointer;
`;
player.appendChild(skipButton);
// 监听视频播放时间
const video = document.querySelector('video');
if (!video) {
console.error('未找到视频元素');
return;
}
// 点击跳过按钮
skipButton.addEventListener('click', () => {
const currentTime = video.currentTime;
console.log('当前时间:', currentTime);
const adSegment = this.adTimeRanges.find(([start, end]) =>
currentTime >= start && currentTime < end
);
if (adSegment) {
video.currentTime = adSegment[1]; // 跳到广告段结束时间
console.log('跳转时间:', adSegment[1]);
}
});
},
showNotification(message) {
const notification = document.createElement('div');
notification.style.cssText = `
position: fixed;
top: 20px;
right: 20px;
background: rgba(0, 0, 0, 0.7);
color: white;
padding: 10px 15px;
border-radius: 4px;
z-index: 9999;
max-width: 300px;
`;
notification.textContent = message;
document.body.appendChild(notification);
setTimeout(() => {
notification.style.opacity = '0';
notification.style.transition = 'opacity 0.5s';
setTimeout(() => notification.remove(), 500);
}, 5000);
},
// 添加设置面板
addSettingsButton() {
const settingsButton = document.createElement('button');
settingsButton.textContent = '⚙️';
settingsButton.style.cssText = `
position: fixed;
bottom: 20px;
right: 20px;
width: 40px;
height: 40px;
border-radius: 50%;
background: rgba(0, 0, 0, 0.7);
color: white;
border: none;
font-size: 20px;
cursor: pointer;
z-index: 9999;
`;
document.body.appendChild(settingsButton);
settingsButton.addEventListener('click', () => {
this.showSettingsPanel();
});
},
showSettingsPanel() {
// 移除已存在的面板
const existingPanel = document.querySelector('.vag-settings-panel');
if (existingPanel) {
existingPanel.remove();
return;
}
const panel = document.createElement('div');
panel.className = 'vag-settings-panel';
panel.style.cssText = `
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background: white;
padding: 20px;
border-radius: 8px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
z-index: 10000;
width: 300px;
`;
panel.innerHTML = `
<h3 style="margin-top: 0;">VideoAdGuard 设置</h3>
<div style="margin-bottom: 15px;">
<label style="display: block; margin-bottom: 5px;">API地址：</label>
<input type="text" id="vag-api-url" style="width: 100%; padding: 5px; box-sizing: border-box;"
value="${AIService.getApiUrl()}">
</div>
<div style="margin-bottom: 15px;">
<label style="display: block; margin-bottom: 5px;">API密钥：</label>
<input type="password" id="vag-api-key" style="width: 100%; padding: 5px; box-sizing: border-box;"
value="${AIService.getApiKey() || ''}">
</div>
<div style="margin-bottom: 15px;">
<label style="display: block; margin-bottom: 5px;">模型名称：</label>
<input type="text" id="vag-model" style="width: 100%; padding: 5px; box-sizing: border-box;"
value="${AIService.getModel()}">
</div>
<div style="display: flex; justify-content: space-between;">
<button id="vag-save" style="padding: 8px 15px; background: #4CAF50; color: white; border: none; border-radius: 4px; cursor: pointer;">
保存
</button>
<button id="vag-cancel" style="padding: 8px 15px; background: #f44336; color: white; border: none; border-radius: 4px; cursor: pointer;">
取消
</button>
</div>
`;
document.body.appendChild(panel);
// 保存按钮事件
document.getElementById('vag-save').addEventListener('click', () => {
const apiUrl = document.getElementById('vag-api-url').value;
const apiKey = document.getElementById('vag-api-key').value;
const model = document.getElementById('vag-model').value;
GM_setValue('apiUrl', apiUrl);
GM_setValue('apiKey', apiKey);
GM_setValue('model', model);
this.showNotification('设置已保存');
panel.remove();
});
// 取消按钮事件
document.getElementById('vag-cancel').addEventListener('click', () => {
panel.remove();
});
}
};
// 初始化
function init() {
// 页面加载完成后执行分析
AdDetector.analyze();
// 添加设置按钮
AdDetector.addSettingsButton();
// 添加 URL 变化监听
let lastUrl = location.href;
new MutationObserver(() => {
const url = location.href;
if (url !== lastUrl) {
lastUrl = url;
console.log('URL changed:', url);
AdDetector.analyze();
}
}).observe(document, { subtree: true, childList: true });
// 监听 history 变化
window.addEventListener('popstate', () => {
console.log('History changed:', location.href);
AdDetector.analyze();
});
}
// 等待页面加载完成
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();
QingJ © 2025
镜像随时可能失效，请加Q群300939539或关注我们的公众号极客氢云获取最新地址