安装使用说明
安装Tampermonkey浏览器扩展
创建新脚本，复制文末的油猴脚本代码
保存脚本并刷新B站视频页面
快捷键进行操作或点击按钮显示控件操作
功能说明
视频缩放：
50%-200%自由缩放（步进10%）
滑块控制精确缩放
快捷键：Ctrl + +/↑（放大）、Ctr l+ -/↓（缩小）
视频旋转：
支持0°、90°、180°、270°旋转
左右旋转按钮
快捷键：Ctrl + L/←（左旋转） Ctrl+R/→（右旋转）
拖拽移动：
视频放大后可用鼠标拖拽移动位置
视频容器显示抓取/抓取中光标状态
还原功能：
一键还原视频到初始状态（100%大小，0°旋转，居中位置）
快捷键：Ctrl+0
状态显示：
实时显示当前缩放比例
实时显示旋转角度
全屏切换：
ctrl+空格
代码分割线
复制以下代码：
// ==UserScript==
// @name B站视频增强：缩放、旋转、拖拽
// @namespace http://tampermonkey.net/
// @version 1.2
// @description 为B站视频添加缩放、旋转、拖拽移动和还原功能
// @author 浮云里的浮云
// @match *://*.网页链接
// @icon 网页链接
// @grant GM_addStyle
// ==/UserScript==
(function() {
'use strict';
// 添加自定义样式
GM_addStyle(`
.bili-custom-controls {
position: relative;
display: flex;
align-items: center;
gap: 12px;
margin-left: 15px;
margin-bottom: 4px;
}
.bili-control-btn {
background: rgba(0, 0, 0, 0.5);
border: none;
border-radius: 4px;
color: white;
cursor: pointer;
font-size: 14px;
height: 32px;
padding: 0 12px;
display: flex;
align-items: center;
transition: all 0.2s ease;
}
.bili-control-btn:hover {
background: rgba(255, 255, 255, 0.2);
}
.bili-control-btn i {
margin-right: 6px;
font-size: 16px;
}
.bili-zoom-controls {
display: flex;
align-items: center;
gap: 6px;
}
.bili-zoom-btn {
width: 32px;
height: 32px;
border-radius: 4px;
background: rgba(0, 0, 0, 0.5);
color: white;
border: none;
font-size: 18px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
}
.bili-zoom-display {
min-width: 50px;
text-align: center;
font-size: 14px;
color: white;
}
.bili-rotate-btn {
position: relative;
}
.resetBtn {
position: relative;
}
.resetBtn .bili-rotate-indicator {
position: absolute;
top: -5px;
right: -5px;
background: #ff4e4e;
color: white;
border-radius: 50%;
width: 18px;
height: 18px;
font-size: 10px;
display: flex;
align-items: center;
justify-content: center;
}
.bpx-player-container .bpx-player-video-wrap {
transition: transform 0.3s ease;
transform-origin: center center;
cursor: grab;
}
.bpx-player-container .bpx-player-video-wrap:active {
cursor: grabbing;
}
`);
// 创建控制按钮
function createControlButtons() {
const controlsContainer = document.querySelector('.bpx-player-control-bottom-center');
if (!controlsContainer || document.getElementById('biliCustomControls')) return;
// 创建自定义控制容器
const customControls = document.createElement('div');
customControls.id = 'biliCustomControls';
customControls.className = 'bili-custom-controls';
// 缩放控制
const zoomContainer = document.createElement('div');
zoomContainer.className = 'bili-zoom-controls';
const zoomOutBtn = document.createElement('button');
zoomOutBtn.className = 'bili-zoom-btn';
zoomOutBtn.innerHTML = '−';
zoomOutBtn.title = '缩小视频';
const zoomDisplay = document.createElement('div');
zoomDisplay.className = 'bili-zoom-display';
zoomDisplay.textContent = '100%';
const zoomInBtn = document.createElement('button');
zoomInBtn.className = 'bili-zoom-btn';
zoomInBtn.innerHTML = '+';
zoomInBtn.title = '放大视频';
zoomContainer.appendChild(zoomOutBtn);
zoomContainer.appendChild(zoomDisplay);
zoomContainer.appendChild(zoomInBtn);
// 旋转控制
const rotateLeftBtn = document.createElement('button');
rotateLeftBtn.className = 'bili-control-btn';
rotateLeftBtn.innerHTML = '↺';
rotateLeftBtn.title = '向左旋转90°';
const rotateRightBtn = document.createElement('button');
rotateRightBtn.className = 'bili-control-btn';
rotateRightBtn.innerHTML = '↻';
rotateRightBtn.title = '向右旋转90°';
const rotateIndicator = document.createElement('div');
rotateIndicator.className = 'bili-rotate-indicator';
rotateIndicator.textContent = '0°';
// 还原按钮
const resetBtn = document.createElement('button');
resetBtn.className = 'bili-control-btn resetBtn';
resetBtn.innerHTML = '还原';
resetBtn.title = '还原视频到初始状态';
resetBtn.style.background = 'rgba(255, 50, 50, 0.6)';
resetBtn.appendChild(rotateIndicator);
// 添加到容器
customControls.appendChild(zoomContainer);
customControls.appendChild(rotateLeftBtn);
customControls.appendChild(rotateRightBtn);
customControls.appendChild(resetBtn);
// 插入到控制栏
controlsContainer.insertBefore(customControls, controlsContainer.firstChild);
// 状态变量
let zoomLevel = 100;
let rotation = 0;
let offsetX = 0;
let offsetY = 0;
let isDragging = false;
let startX, startY;
// 获取视频元素
const videoContainer = document.querySelector('.bpx-player-video-wrap');
if (!videoContainer) return;
// 应用变换
function applyTransform() {
videoContainer.style.transform = `translate(${offsetX}px, ${offsetY}px) scale(${zoomLevel/100}) rotate(${rotation}deg)`;
videoContainer.style.transformOrigin = 'center center';
zoomDisplay.textContent = `${zoomLevel}%`;
rotateIndicator.textContent = `${rotation}°`;
}
// 初始应用
applyTransform();
// 缩放按钮事件
zoomOutBtn.addEventListener('click', () => {
if (zoomLevel > 50) {
zoomLevel -= 10;
applyTransform();
}
});
zoomInBtn.addEventListener('click', () => {
if (zoomLevel < 200) {
zoomLevel += 10;
applyTransform();
}
});
// 旋转按钮事件
rotateLeftBtn.addEventListener('click', () => {
rotation = (rotation - 90) % 360;
applyTransform();
});
rotateRightBtn.addEventListener('click', () => {
rotation = (rotation + 90) % 360;
applyTransform();
});
// 还原按钮事件
resetBtn.addEventListener('click', () => {
zoomLevel = 100;
rotation = 0;
offsetX = 0;
offsetY = 0;
applyTransform();
});
// 拖拽功能
videoContainer.addEventListener('mousedown', (e) => {
if (zoomLevel <= 100) return;
isDragging = true;
startX = e.clientX - offsetX;
startY = e.clientY - offsetY;
videoContainer.style.cursor = 'grabbing';
});
document.addEventListener('mousemove', (e) => {
if (!isDragging) return;
offsetX = e.clientX - startX;
offsetY = e.clientY - startY;
applyTransform();
});
document.addEventListener('mouseup', () => {
isDragging = false;
videoContainer.style.cursor = zoomLevel > 100 ? 'grab' : 'default';
});
// 添加键盘快捷键
document.addEventListener('keydown', (e) => {
// 忽略输入框中的按键
if (document.activeElement.tagName === 'INPUT') return;
// Ctrl+空格键切换全屏
if (e.ctrlKey && e.code === 'Space') {
e.preventDefault();
// 获取全屏按钮
const fullscreenBtn = document.querySelector('.bpx-player-ctrl-full');
fullscreenBtn.click();
/**
// 检查当前是否全屏
const isFullscreen = document.fullscreenElement ||
document.webkitFullscreenElement ||
document.mozFullScreenElement ||
document.msFullscreenElement;
// 检查是否是网页全屏模式
const isWebFullscreen = document.querySelector('.bpx-player-web-full');
// 仅在非全屏状态下执行操作
if (!isFullscreen && !isWebFullscreen) {
// 获取全屏按钮
const fullscreenBtn = document.querySelector('.bpx-player-ctrl-full');
if (fullscreenBtn) {
fullscreenBtn.click();
}
}
*/
}
// Ctrl+加号/减号 缩放
if (e.ctrlKey && (e.key === '+' || e.key === '=' || e.keyCode == '38')) {
e.preventDefault();
zoomInBtn.click();
} else if (e.ctrlKey && (e.key === '-'|| e.keyCode == '40')) {
e.preventDefault();
zoomOutBtn.click();
}
// Ctrl+L/左箭头 旋转
if (e.ctrlKey && (e.key.toLowerCase() === 'l' || e.keyCode == '37')) {
e.preventDefault();
rotateLeftBtn.click();
}
// Ctrl+R/右箭头 旋转
if (e.ctrlKey && (e.key.toLowerCase() === 'r' || e.keyCode == '39')) {
e.preventDefault();
rotateRightBtn.click();
}
// Ctrl+0 还原
if (e.ctrlKey && e.key === '0') {
e.preventDefault();
resetBtn.click();
}
});
}
// 初始化并监听播放器加载
function init() {
createControlButtons();
// 监听播放器变化（针对SPA页面）
const observer = new MutationObserver(() => {
createControlButtons();
});
observer.observe(document.body, {
childList: true,
subtree: true
});
}
// 页面加载完成后初始化
if (document.readyState === 'complete') {
init();
} else {
window.addEventListener('load', init);
}
})();
