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<div class="video-container">
  <video id="myVideo" width="800" height="450">
    <source src="example.mp4" type="video/mp4">
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  </video>
<p><div class="custom-controls">
<button id="playPauseBtn">播放</button>
<input type="range" id="seekBar" value="0">
<input type="range" id="volumeBar" min="0" max="1" step="0.1" value="1">
<button id="muteBtn">静音</button>
<span id="timeDisplay">00:00 / 00:00</span>
</div>
</div></p>

.video-container {
  position: relative;
  display: inline-block;
}
<p>.custom-controls {
background: rgba(0, 0, 0, 0.7);
color: white;
padding: 10px;
display: flex;
align-items: center;
gap: 10px;
font-size: 14px;
}</p><h1>playPauseBtn, #muteBtn {</h1><p>background: #007bff;
border: none;
color: white;
padding: 5px 10px;
cursor: pointer;
border-radius: 4px;
}</p><p>input[type="range"] {
width: 100px;
}</p>

const video = document.getElementById('myVideo');
const playPauseBtn = document.getElementById('playPauseBtn');
const seekBar = document.getElementById('seekBar');
const volumeBar = document.getElementById('volumeBar');
const muteBtn = document.getElementById('muteBtn');
const timeDisplay = document.getElementById('timeDisplay');
<p>// 播放/暂停切换
playPauseBtn.addEventListener('click', () => {
if (video.paused) {
video.play();
playPauseBtn.textContent = '暂停';
} else {
video.pause();
playPauseBtn.textContent = '播放';
}
});</p><p>// 更新进度条
video.addEventListener('timeupdate', () => {
const currentTime = video.currentTime;
const duration = video.duration || 1;
seekBar.value = (currentTime / duration) * 100;</p><p>const cur = formatTime(currentTime);
const dur = formatTime(duration);
timeDisplay.textContent = <code>${cur} / ${dur}</code>;
});</p><p>// 跳转播放位置
seekBar.addEventListener('change', () => {
const duration = video.duration || 1;
video.currentTime = (seekBar.value / 100) * duration;
});</p><p>// 音量控制
volumeBar.addEventListener('input', () => {
video.volume = volumeBar.value;
});</p><p>// 静音切换
muteBtn.addEventListener('click', () => {
video.muted = !video.muted;
muteBtn.textContent = video.muted ? '取消静音' : '静音';
});</p><p>// 时间格式化：秒 → MM:SS
function formatTime(seconds) {
const mins = Math.floor(seconds / 60);
const secs = Math.floor(seconds % 60);
return <code>${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}</code>;
}</p>