1015 lines
38 KiB
Plaintext
1015 lines
38 KiB
Plaintext
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>自定义视频音频播放器</title>
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<script src="https://cdn.jsdelivr.net/npm/video.js@8.22.0/dist/video.min.js"></script>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/video.js@8.22.0/dist/video-js.min.css">
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<script>
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// const VIDEO_URL = 'output.mp4';
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// const VIDEO_URL = 'merged_output.mp4';
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const VIDEO_URL = 'merged_dual_track.mp4';
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// const VIDEO_URL = 'demo01.mp4';
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// const VIDEO_URL = 'demo02.mp4';
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// const VIDEO_URL = 'demo03.mp4';
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</script>
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<style>
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.container {
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max-width: 1000px;
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margin: 20px auto;
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padding: 0 20px;
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}
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.video-box {
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width: 100%;
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position: relative;
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}
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.video-js {
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width: 100%;
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border-radius: 8px;
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}
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.video-js .vjs-tech {
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border-radius: 8px;
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}
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/* Video.js 自定义样式 */
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.video-js .vjs-big-play-button {
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font-size: 3em;
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line-height: 1.5em;
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height: 1.5em;
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width: 3em;
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border-radius: 0.3em;
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background-color: rgba(43, 51, 63, 0.7);
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border: none;
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margin-top: -0.75em;
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margin-left: -1.5em;
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}
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.video-js .vjs-control-bar {
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background: rgba(43, 51, 63, 0.7);
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color: #fff;
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}
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.controls {
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margin: 15px 0;
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display: flex;
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gap: 10px;
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align-items: center;
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flex-wrap: wrap;
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}
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.control-group {
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margin: 10px 0;
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padding: 10px;
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border: 1px solid #eee;
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border-radius: 6px;
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background: #fafafa;
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}
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.control-group h4 {
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margin: 0 0 8px 0;
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font-size: 14px;
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color: #333;
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}
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.radio-group {
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display: flex;
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gap: 15px;
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flex-wrap: wrap;
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align-items: center;
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}
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.radio-item {
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display: flex;
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align-items: center;
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gap: 5px;
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}
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.radio-item input[type="radio"] {
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margin: 0;
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}
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.radio-item label {
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font-size: 13px;
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cursor: pointer;
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user-select: none;
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}
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button {
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padding: 8px 16px;
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cursor: pointer;
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border: 1px solid #ddd;
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border-radius: 4px;
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background: #f5f5f5;
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}
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button:hover {
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background: #eee;
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}
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input[type="text"] {
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flex: 1;
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max-width: 400px;
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padding: 8px;
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border: 1px solid #ddd;
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border-radius: 4px;
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}
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input[type="range"] {
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width: 150px;
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}
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#visualizer {
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border: 1px solid #eee;
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margin-top: 20px;
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width: 100%;
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height: 150px;
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border-radius: 4px;
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}
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.status {
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color: #666;
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margin-top: 5px;
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}
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.progress-container {
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margin: 15px 0;
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position: relative;
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}
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.progress-bar {
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width: 100%;
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height: 8px;
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background: #e0e0e0;
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border-radius: 4px;
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cursor: pointer;
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position: relative;
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overflow: hidden;
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}
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.progress-fill {
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height: 100%;
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background: linear-gradient(90deg, #4CAF50, #45a049);
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border-radius: 4px;
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width: 0%;
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transition: width 0.1s ease;
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}
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.progress-info {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-top: 5px;
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font-size: 12px;
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color: #666;
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}
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.time-display {
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font-family: monospace;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h2>自定义视频音频播放器</h2>
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<div class="status" id="statusText">正在自动加载视频...</div>
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<div class="video-box">
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<video id="video" class="video-js vjs-default-skin" crossorigin="anonymous" controls preload="auto"
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data-setup='{}'>
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<p class="vjs-no-js">
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要查看此视频，请启用 JavaScript，并考虑升级到
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<a href="https://videojs.com/html5-video-support/" target="_blank">
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支持HTML5视频的网络浏览器
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</a>。
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</p>
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</video>
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</div>
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<div class="controls">
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<button id="playBtn" disabled>播放</button>
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<button id="pauseBtn" disabled>暂停</button>
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<button id="muteBtn">静音</button>
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<button id="testAudioBtn">测试音频</button>
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<span>音量：</span>
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<input type="range" id="volume" min="0" max="1" step="0.1" value="1">
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</div>
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<div class="progress-container">
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<div class="progress-bar" id="progressBar">
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<div class="progress-fill" id="progressFill"></div>
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</div>
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<div class="progress-info">
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<span class="time-display" id="currentTime">00:00</span>
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<span class="time-display" id="duration">00:00</span>
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</div>
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</div>
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<div class="control-group">
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<h4>音轨选择</h4>
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<div class="radio-group" id="trackRadioGroup">
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<div class="radio-item">
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<input type="radio" id="track0" name="audioTrack" value="0" checked>
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<label for="track0">默认音轨</label>
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</div>
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</div>
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</div>
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<div class="control-group">
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<h4>播放速度</h4>
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<div class="radio-group">
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<div class="radio-item">
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<input type="radio" id="rate05" name="playbackRate" value="0.5">
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<label for="rate05">0.5x</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="rate075" name="playbackRate" value="0.75">
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<label for="rate075">0.75x</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="rate1" name="playbackRate" value="1" checked>
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<label for="rate1">1x (正常)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="rate125" name="playbackRate" value="1.25">
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<label for="rate125">1.25x</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="rate15" name="playbackRate" value="1.5">
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<label for="rate15">1.5x</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="rate2" name="playbackRate" value="2">
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<label for="rate2">2x</label>
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</div>
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</div>
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</div>
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<div class="control-group">
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<h4>音调变换</h4>
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<div class="radio-group">
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<div class="radio-item">
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<input type="radio" id="pitch-12" name="pitchShift" value="-12">
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<label for="pitch-12">降一个八度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch-7" name="pitchShift" value="-7">
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<label for="pitch-7">降五度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch-5" name="pitchShift" value="-5">
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<label for="pitch-5">降四度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch-3" name="pitchShift" value="-3">
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<label for="pitch-3">降小三度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch-2" name="pitchShift" value="-2">
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<label for="pitch-2">降大二度 (C→B♭)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch-1" name="pitchShift" value="-1">
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<label for="pitch-1">降小二度 (C→B)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch0" name="pitchShift" value="0" checked>
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<label for="pitch0">原调</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch1" name="pitchShift" value="1">
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<label for="pitch1">升小二度 (C→C#)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch2" name="pitchShift" value="2">
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<label for="pitch2">升大二度 (C→D)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch3" name="pitchShift" value="3">
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<label for="pitch3">升小三度 (C→D#)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch4" name="pitchShift" value="4">
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<label for="pitch4">升大三度 (C→E)</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch5" name="pitchShift" value="5">
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<label for="pitch5">升四度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch7" name="pitchShift" value="7">
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<label for="pitch7">升五度</label>
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</div>
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<div class="radio-item">
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<input type="radio" id="pitch12" name="pitchShift" value="12">
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<label for="pitch12">升一个八度</label>
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</div>
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</div>
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</div>
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<h3>音频频谱可视化</h3>
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<canvas id="visualizer"></canvas>
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</div>
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<script>
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// Video.js 播放器实例
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let player;
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let video; // 将在 Video.js 初始化后设置
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const playBtn = document.getElementById('playBtn');
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const pauseBtn = document.getElementById('pauseBtn');
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const muteBtn = document.getElementById('muteBtn');
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const testAudioBtn = document.getElementById('testAudioBtn');
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const volumeInput = document.getElementById('volume');
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const trackRadioGroup = document.getElementById('trackRadioGroup');
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const statusText = document.getElementById('statusText');
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const canvas = document.getElementById('visualizer');
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const ctx = canvas.getContext('2d');
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const progressBar = document.getElementById('progressBar');
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const progressFill = document.getElementById('progressFill');
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const currentTimeDisplay = document.getElementById('currentTime');
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const durationDisplay = document.getElementById('duration');
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// 固定视频地址 - 使用支持CORS的视频源
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let audioContext;
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let analyser;
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let mediaElementSource;
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let animationId;
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let gainNode;
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let soundTouchNode;
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let currentPitchShift = 0;
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let isAudioContextInitialized = false;
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let isWorkletRegistered = false;
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// 设置画布尺寸
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function resizeCanvas() {
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canvas.width = canvas.clientWidth;
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canvas.height = canvas.clientHeight;
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}
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// 格式化时间显示（秒转换为 mm:ss 格式）
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function formatTime(seconds) {
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if (isNaN(seconds) || !isFinite(seconds)) {
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return '00:00';
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}
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const minutes = Math.floor(seconds / 60);
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const secs = Math.floor(seconds % 60);
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return `${minutes.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
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}
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// 更新进度条
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function updateProgress() {
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if (player && player.duration() && isFinite(player.duration())) {
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const progress = (player.currentTime() / player.duration()) * 100;
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progressFill.style.width = `${progress}%`;
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currentTimeDisplay.textContent = formatTime(player.currentTime());
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durationDisplay.textContent = formatTime(player.duration());
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}
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}
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// 处理进度条点击跳转
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function handleProgressBarClick(event) {
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const rect = progressBar.getBoundingClientRect();
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const clickX = event.clientX - rect.left;
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const progressBarWidth = rect.width;
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const clickRatio = clickX / progressBarWidth;
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if (player && player.duration() && isFinite(player.duration())) {
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const newTime = clickRatio * player.duration();
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player.currentTime(Math.max(0, Math.min(newTime, player.duration())));
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console.log(`跳转到: ${formatTime(newTime)}`);
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}
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}
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// 创建 SoundTouch AudioWorkletNode (现代化音调变换)
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async function createSoundTouchNode(audioContext) {
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try {
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// 首先注册 AudioWorklet 处理器
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if (!isWorkletRegistered) {
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console.log('注册 SoundTouch AudioWorklet...');
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await audioContext.audioWorklet.addModule('https://cdn.jsdelivr.net/npm/@soundtouchjs/audio-worklet@0.2.1/dist/soundtouch-worklet.js');
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isWorkletRegistered = true;
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console.log('SoundTouch AudioWorklet 注册成功');
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}
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// 创建 AudioWorkletNode
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const workletNode = new AudioWorkletNode(audioContext, 'soundtouch-processor');
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console.log('SoundTouch AudioWorkletNode 创建成功');
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return workletNode;
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} catch (error) {
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console.error('创建 SoundTouch 节点失败:', error);
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// 如果失败，返回一个直通节点
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return createPassThroughNode(audioContext);
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}
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}
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// 创建直通节点作为后备方案
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function createPassThroughNode(audioContext) {
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console.log('创建直通节点作为后备方案');
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const gainNode = audioContext.createGain();
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gainNode.gain.value = 1.0;
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return gainNode;
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}
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// 应用音调变换
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function applyPitchShift(semitones) {
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currentPitchShift = semitones;
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console.log('音调变换设置为:', semitones, '半音');
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// 如果有 SoundTouch 节点，设置音调参数
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if (soundTouchNode && soundTouchNode.parameters) {
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try {
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// 使用 pitchSemitones 参数来设置半音变换
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const pitchSemitonesParam = soundTouchNode.parameters.get('pitchSemitones');
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if (pitchSemitonesParam) {
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pitchSemitonesParam.value = semitones;
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console.log('SoundTouch 音调半音设置为:', semitones);
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} else {
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console.warn('pitchSemitones 参数不可用，尝试使用 pitch 参数');
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// 备选方案：使用 pitch 参数（比率）
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const pitchParam = soundTouchNode.parameters.get('pitch');
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if (pitchParam) {
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const pitchRatio = Math.pow(2, semitones / 12);
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pitchParam.value = pitchRatio;
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console.log('SoundTouch 音调比率设置为:', pitchRatio);
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}
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}
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} catch (error) {
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console.warn('设置 SoundTouch 参数时出错:', error);
|
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}
|
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}
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// 更新状态显示
|
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if (!video.paused) {
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const pitchText = semitones === 0 ? '原调' :
|
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(semitones > 0 ? `升${semitones}半音` : `降${Math.abs(semitones)}半音`);
|
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const currentRate = player ? player.playbackRate() : 1;
|
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const rateText = currentRate === 1 ? '正常速度' : `${currentRate}x 速度`;
|
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statusText.textContent = `正在播放 (${rateText}, ${pitchText})`;
|
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}
|
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}
|
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|
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// 初始化音频上下文（需用户交互触发）
|
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async function initAudioContext() {
|
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try {
|
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if (isAudioContextInitialized) {
|
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console.log('音频上下文已经初始化，跳过');
|
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return;
|
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}
|
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|
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console.log('开始初始化音频上下文...');
|
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audioContext = new (window.AudioContext || window.webkitAudioContext)();
|
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|
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// 如果音频上下文被暂停，恢复它
|
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if (audioContext.state === 'suspended') {
|
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await audioContext.resume();
|
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console.log('音频上下文已恢复');
|
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}
|
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|
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// 创建媒体元素源
|
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mediaElementSource = audioContext.createMediaElementSource(video);
|
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console.log('媒体元素源已创建');
|
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|
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// 创建分析器节点
|
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analyser = audioContext.createAnalyser();
|
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analyser.fftSize = 1024; // 增加分辨率
|
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analyser.smoothingTimeConstant = 0.8;
|
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console.log('分析器节点已创建，fftSize:', analyser.fftSize); // 创建增益节点（用于音量控制）
|
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gainNode = audioContext.createGain();
|
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gainNode.gain.value = 1.0;
|
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console.log('增益节点已创建');
|
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|
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// 创建 SoundTouch 音调变换节点
|
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soundTouchNode = await createSoundTouchNode(audioContext);
|
||
console.log('SoundTouch 节点已创建');
|
||
|
||
// 连接音频节点链：视频 -> SoundTouch -> 分析器 -> 增益 -> 输出
|
||
mediaElementSource.connect(soundTouchNode);
|
||
soundTouchNode.connect(analyser);
|
||
analyser.connect(gainNode);
|
||
gainNode.connect(audioContext.destination);
|
||
console.log('音频节点链已连接（使用 SoundTouch AudioWorklet）');
|
||
|
||
isAudioContextInitialized = true;
|
||
console.log('音频上下文初始化成功！');
|
||
|
||
// 立即开始可视化
|
||
startVisualization();
|
||
|
||
// 测试音频数据
|
||
setTimeout(() => {
|
||
if (analyser) {
|
||
const testArray = new Uint8Array(analyser.frequencyBinCount);
|
||
analyser.getByteFrequencyData(testArray);
|
||
const hasData = testArray.some(value => value > 0);
|
||
console.log('测试音频数据 - 有数据:', hasData);
|
||
if (hasData) {
|
||
console.log('前10个频谱值:', Array.from(testArray.slice(0, 10)));
|
||
}
|
||
}
|
||
}, 2000);
|
||
|
||
} catch (error) {
|
||
console.error('音频上下文初始化失败:', error);
|
||
// 如果音频上下文初始化失败，至少确保视频能播放
|
||
isAudioContextInitialized = false;
|
||
}
|
||
}
|
||
|
||
// 启动可视化
|
||
function startVisualization() {
|
||
if (!analyser) {
|
||
console.warn('分析器节点不存在，启动模拟可视化');
|
||
startMockVisualization();
|
||
return;
|
||
}
|
||
|
||
// 如果已经在运行动画，先停止
|
||
if (animationId) {
|
||
cancelAnimationFrame(animationId);
|
||
}
|
||
|
||
const bufferLength = analyser.frequencyBinCount;
|
||
const dataArray = new Uint8Array(bufferLength);
|
||
console.log('可视化已启动，缓冲区长度:', bufferLength);
|
||
|
||
function draw() {
|
||
if (!analyser) {
|
||
console.warn('分析器节点丢失，停止绘制');
|
||
return;
|
||
}
|
||
|
||
// 获取频谱数据
|
||
analyser.getByteFrequencyData(dataArray);
|
||
|
||
// 检查是否有音频数据
|
||
let hasAudioData = false;
|
||
let maxValue = 0;
|
||
for (let i = 0; i < dataArray.length; i++) {
|
||
if (dataArray[i] > 0) {
|
||
hasAudioData = true;
|
||
maxValue = Math.max(maxValue, dataArray[i]);
|
||
}
|
||
}
|
||
|
||
// 清空画布
|
||
ctx.fillStyle = 'rgb(240, 240, 240)';
|
||
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||
|
||
if (hasAudioData) {
|
||
// console.log('检测到音频数据，最大值:', maxValue);
|
||
// 绘制频谱柱状图
|
||
const barWidth = (canvas.width / bufferLength) * 2.5;
|
||
let x = 0;
|
||
|
||
for (let i = 0; i < bufferLength; i++) {
|
||
const barHeight = (dataArray[i] / 255) * canvas.height;
|
||
|
||
// 创建渐变色
|
||
const hue = (i / bufferLength) * 360;
|
||
ctx.fillStyle = `hsl(${hue}, 70%, 50%)`;
|
||
|
||
ctx.fillRect(x, canvas.height - barHeight, barWidth - 1, barHeight);
|
||
x += barWidth;
|
||
}
|
||
} else {
|
||
// 显示"无音频数据"提示
|
||
ctx.fillStyle = '#999';
|
||
ctx.font = '16px Arial';
|
||
ctx.textAlign = 'center';
|
||
ctx.fillText('等待音频数据...', canvas.width / 2, canvas.height / 2);
|
||
|
||
// 如果视频正在播放但没有音频数据，可能有问题
|
||
if (player && !player.paused()) {
|
||
console.log('视频正在播放但没有音频数据');
|
||
}
|
||
}
|
||
|
||
animationId = requestAnimationFrame(draw);
|
||
}
|
||
|
||
draw();
|
||
}
|
||
|
||
// 模拟可视化（当Web Audio API不可用时）
|
||
function startMockVisualization() {
|
||
console.log('启动模拟可视化');
|
||
|
||
function draw() {
|
||
if (player && player.paused()) {
|
||
return;
|
||
}
|
||
|
||
// 清空画布
|
||
ctx.fillStyle = 'rgb(240, 240, 240)';
|
||
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||
|
||
// 生成模拟频谱数据
|
||
const barCount = 50;
|
||
const barWidth = canvas.width / barCount;
|
||
|
||
for (let i = 0; i < barCount; i++) {
|
||
// 根据时间生成动态数据
|
||
const time = Date.now() * 0.001;
|
||
const frequency = i * 0.2;
|
||
const amplitude = Math.sin(time + frequency) * 0.5 + 0.5;
|
||
const barHeight = amplitude * canvas.height * 0.8;
|
||
|
||
// 创建渐变色
|
||
const hue = (i / barCount) * 360;
|
||
ctx.fillStyle = `hsl(${hue}, 70%, 50%)`;
|
||
|
||
ctx.fillRect(i * barWidth, canvas.height - barHeight, barWidth - 1, barHeight);
|
||
}
|
||
|
||
animationId = requestAnimationFrame(draw);
|
||
}
|
||
|
||
draw();
|
||
}
|
||
|
||
// 停止可视化
|
||
function stopVisualization() {
|
||
if (animationId) {
|
||
cancelAnimationFrame(animationId);
|
||
animationId = null;
|
||
}
|
||
}
|
||
|
||
// 初始化 Video.js 播放器
|
||
function initVideoPlayer() {
|
||
console.log('初始化 Video.js 播放器...');
|
||
|
||
player = videojs('video', {
|
||
controls: true,
|
||
fluid: true,
|
||
responsive: true,
|
||
playbackRates: [0.5, 0.75, 1, 1.25, 1.5, 2],
|
||
plugins: {
|
||
// 可以在这里添加插件配置
|
||
}
|
||
});
|
||
|
||
// 获取底层的 HTML5 video 元素
|
||
video = player.tech(true).el();
|
||
|
||
player.ready(() => {
|
||
console.log('Video.js 播放器已准备就绪');
|
||
|
||
// 设置视频源
|
||
player.src({
|
||
src: VIDEO_URL,
|
||
type: 'video/mp4'
|
||
});
|
||
|
||
console.log('视频源已设置:', VIDEO_URL);
|
||
statusText.textContent = 'Video.js 播放器已初始化，视频源已加载';
|
||
statusText.style.color = 'green';
|
||
|
||
// 启用控制按钮
|
||
playBtn.disabled = false;
|
||
pauseBtn.disabled = false;
|
||
});
|
||
|
||
// Video.js 事件监听
|
||
player.on('loadedmetadata', () => {
|
||
console.log('Video.js: 视频元数据已加载');
|
||
console.log('视频时长:', player.duration());
|
||
console.log('视频尺寸:', player.videoWidth(), 'x', player.videoHeight());
|
||
|
||
// 初始化进度条
|
||
updateProgress();
|
||
|
||
// 处理音轨信息
|
||
handleAudioTracks();
|
||
});
|
||
|
||
player.on('play', () => {
|
||
console.log('Video.js: 播放开始');
|
||
handlePlayEvent();
|
||
});
|
||
|
||
player.on('pause', () => {
|
||
console.log('Video.js: 播放暂停');
|
||
handlePauseEvent();
|
||
});
|
||
|
||
player.on('ended', () => {
|
||
console.log('Video.js: 播放结束');
|
||
handleEndedEvent();
|
||
});
|
||
|
||
player.on('timeupdate', () => {
|
||
updateProgress();
|
||
});
|
||
|
||
player.on('volumechange', () => {
|
||
console.log('Video.js: 音量变化:', player.volume(), '静音:', player.muted());
|
||
// 同步到自定义音量控件
|
||
volumeInput.value = player.volume();
|
||
muteBtn.textContent = player.muted() ? '取消静音' : '静音';
|
||
});
|
||
|
||
player.on('error', (error) => {
|
||
console.error('Video.js 错误:', error);
|
||
statusText.textContent = `播放器错误: ${error.message || '未知错误'}`;
|
||
statusText.style.color = 'red';
|
||
});
|
||
|
||
return player;
|
||
}
|
||
|
||
// 处理音轨信息
|
||
function handleAudioTracks() {
|
||
console.log('处理音轨信息...');
|
||
|
||
// 清空现有的音轨选项
|
||
trackRadioGroup.innerHTML = '';
|
||
|
||
// 获取音轨信息
|
||
const audioTracks = video.audioTracks;
|
||
|
||
if (audioTracks && audioTracks.length > 0) {
|
||
console.log('发现', audioTracks.length, '个音轨');
|
||
|
||
for (let i = 0; i < audioTracks.length; i++) {
|
||
const track = audioTracks[i];
|
||
const radioItem = document.createElement('div');
|
||
radioItem.className = 'radio-item';
|
||
|
||
const radio = document.createElement('input');
|
||
radio.type = 'radio';
|
||
radio.name = 'audioTrack';
|
||
radio.id = `track${i}`;
|
||
radio.value = i;
|
||
radio.checked = track.enabled;
|
||
|
||
const label = document.createElement('label');
|
||
label.htmlFor = `track${i}`;
|
||
label.textContent = track.label || track.language || `音轨 ${i + 1}`;
|
||
|
||
radioItem.appendChild(radio);
|
||
radioItem.appendChild(label);
|
||
trackRadioGroup.appendChild(radioItem);
|
||
|
||
console.log(`音轨 ${i}:`, track.label, track.language, track.enabled);
|
||
|
||
// 添加音轨切换事件
|
||
radio.addEventListener('change', () => {
|
||
if (radio.checked) {
|
||
console.log('切换到音轨:', i);
|
||
// 禁用所有音轨
|
||
for (let j = 0; j < audioTracks.length; j++) {
|
||
audioTracks[j].enabled = false;
|
||
}
|
||
// 启用选中的音轨
|
||
audioTracks[i].enabled = true;
|
||
}
|
||
});
|
||
}
|
||
} else {
|
||
// 默认音轨
|
||
const radioItem = document.createElement('div');
|
||
radioItem.className = 'radio-item';
|
||
|
||
const radio = document.createElement('input');
|
||
radio.type = 'radio';
|
||
radio.name = 'audioTrack';
|
||
radio.id = 'track0';
|
||
radio.value = '0';
|
||
radio.checked = true;
|
||
|
||
const label = document.createElement('label');
|
||
label.htmlFor = 'track0';
|
||
label.textContent = '默认音轨';
|
||
|
||
radioItem.appendChild(radio);
|
||
radioItem.appendChild(label);
|
||
trackRadioGroup.appendChild(radioItem);
|
||
|
||
console.log('使用默认音轨配置');
|
||
}
|
||
}
|
||
|
||
// 处理播放事件
|
||
function handlePlayEvent() {
|
||
playBtn.disabled = true;
|
||
pauseBtn.disabled = false;
|
||
|
||
const currentRate = player.playbackRate();
|
||
const rateText = currentRate === 1 ? '正常速度' : `${currentRate}x 速度`;
|
||
const currentPitchShift = document.querySelector('input[name="pitchShift"]:checked')?.value || '0';
|
||
const pitchText = currentPitchShift === '0' ? '原调' :
|
||
(parseInt(currentPitchShift) > 0 ? `升${currentPitchShift}半音` : `降${Math.abs(parseInt(currentPitchShift))}半音`);
|
||
statusText.textContent = `正在播放 (${rateText}, ${pitchText})`;
|
||
statusText.style.color = '#4CAF50';
|
||
|
||
// 启动音频可视化
|
||
if (isAudioContextInitialized && analyser) {
|
||
startVisualization();
|
||
}
|
||
}
|
||
|
||
// 处理暂停事件
|
||
function handlePauseEvent() {
|
||
playBtn.disabled = false;
|
||
pauseBtn.disabled = true;
|
||
statusText.textContent = '视频已暂停';
|
||
statusText.style.color = '#666';
|
||
stopVisualization();
|
||
}
|
||
|
||
// 处理结束事件
|
||
function handleEndedEvent() {
|
||
playBtn.disabled = false;
|
||
pauseBtn.disabled = true;
|
||
statusText.textContent = '播放结束';
|
||
statusText.style.color = '#666';
|
||
stopVisualization();
|
||
}
|
||
|
||
// 播放控制
|
||
playBtn.addEventListener('click', async () => {
|
||
try {
|
||
console.log('点击播放按钮');
|
||
|
||
// 初始化音频上下文（必须在用户交互后创建）
|
||
if (!isAudioContextInitialized) {
|
||
console.log('初始化音频上下文...');
|
||
await initAudioContext();
|
||
}
|
||
|
||
// 确保音频上下文在运行状态
|
||
if (audioContext && audioContext.state === 'suspended') {
|
||
await audioContext.resume();
|
||
console.log('音频上下文已恢复');
|
||
}
|
||
|
||
// 使用 Video.js 播放
|
||
if (player) {
|
||
await player.play();
|
||
console.log('Video.js 开始播放');
|
||
} else {
|
||
console.error('Video.js 播放器未初始化');
|
||
}
|
||
|
||
} catch (err) {
|
||
console.error('播放失败:', err);
|
||
statusText.textContent = `播放失败：${err.message}`;
|
||
statusText.style.color = 'red';
|
||
}
|
||
});
|
||
|
||
pauseBtn.addEventListener('click', () => {
|
||
if (player) {
|
||
player.pause();
|
||
console.log('Video.js 暂停播放');
|
||
}
|
||
});
|
||
|
||
muteBtn.addEventListener('click', () => {
|
||
if (player) {
|
||
player.muted(!player.muted());
|
||
muteBtn.textContent = player.muted() ? '取消静音' : '静音';
|
||
console.log('Video.js 静音状态:', player.muted());
|
||
}
|
||
});
|
||
|
||
// 测试音频按钮
|
||
testAudioBtn.addEventListener('click', async () => {
|
||
console.log('=== 音频调试信息 ===');
|
||
console.log('Video.js 播放器状态:');
|
||
if (player) {
|
||
console.log('- 是否暂停:', player.paused());
|
||
console.log('- 是否静音:', player.muted());
|
||
console.log('- 音量:', player.volume());
|
||
console.log('- 当前时间:', player.currentTime());
|
||
console.log('- 总时长:', player.duration());
|
||
console.log('- 播放速度:', player.playbackRate());
|
||
} else {
|
||
console.log('- Video.js 播放器未初始化');
|
||
}
|
||
|
||
console.log('底层视频元素状态:');
|
||
if (video) {
|
||
console.log('- 是否暂停:', video.paused);
|
||
console.log('- 是否静音:', video.muted);
|
||
console.log('- 音量:', video.volume);
|
||
console.log('- 当前时间:', video.currentTime);
|
||
console.log('- 总时长:', video.duration);
|
||
} else {
|
||
console.log('- 底层视频元素未获取');
|
||
}
|
||
|
||
console.log('音频上下文状态:');
|
||
console.log('- 是否初始化:', isAudioContextInitialized);
|
||
console.log('- 状态:', audioContext ? audioContext.state : '未创建');
|
||
console.log('- 采样率:', audioContext ? audioContext.sampleRate : 'N/A');
|
||
|
||
console.log('音频节点状态:');
|
||
console.log('- MediaElementSource:', !!mediaElementSource);
|
||
console.log('- Analyser:', !!analyser);
|
||
console.log('- GainNode:', !!gainNode);
|
||
|
||
if (analyser) {
|
||
const testData = new Uint8Array(analyser.frequencyBinCount);
|
||
analyser.getByteFrequencyData(testData);
|
||
const hasData = testData.some(v => v > 0);
|
||
const maxVal = Math.max(...testData);
|
||
console.log('- 频谱数据:', hasData ? `有数据 (最大值: ${maxVal})` : '无数据');
|
||
}
|
||
|
||
// 尝试播放测试音频
|
||
if (player && !player.paused()) {
|
||
console.log('视频正在播放，检查音频输出...');
|
||
setTimeout(() => {
|
||
if (analyser) {
|
||
const data = new Uint8Array(analyser.frequencyBinCount);
|
||
analyser.getByteFrequencyData(data);
|
||
console.log('延迟检查频谱数据:', data.slice(0, 10));
|
||
}
|
||
}, 1000);
|
||
}
|
||
});
|
||
|
||
volumeInput.addEventListener('input', (e) => {
|
||
const volume = parseFloat(e.target.value);
|
||
|
||
// 同步到 Video.js
|
||
if (player) {
|
||
player.volume(volume);
|
||
}
|
||
|
||
// 如果有增益节点，也同步更新
|
||
if (gainNode) {
|
||
gainNode.gain.value = volume;
|
||
}
|
||
|
||
console.log('音量已更新:', volume);
|
||
});
|
||
|
||
// 播放速度控制
|
||
document.querySelectorAll('input[name="playbackRate"]').forEach(radio => {
|
||
radio.addEventListener('change', (e) => {
|
||
if (e.target.checked) {
|
||
const playbackRate = parseFloat(e.target.value);
|
||
|
||
// 使用 Video.js 设置播放速度
|
||
if (player) {
|
||
player.playbackRate(playbackRate);
|
||
}
|
||
|
||
const rateText = playbackRate === 1 ? '正常速度' : `${playbackRate}x 速度`;
|
||
console.log('播放速度已改变为:', rateText);
|
||
|
||
// 如果视频正在播放，显示速度变化提示
|
||
if (player && !player.paused()) {
|
||
const currentPitchShift = document.querySelector('input[name="pitchShift"]:checked')?.value || '0';
|
||
const pitchText = currentPitchShift === '0' ? '原调' :
|
||
(parseInt(currentPitchShift) > 0 ? `升${currentPitchShift}半音` : `降${Math.abs(parseInt(currentPitchShift))}半音`);
|
||
statusText.textContent = `正在播放 (${rateText}, ${pitchText})`;
|
||
statusText.style.color = '#4CAF50';
|
||
}
|
||
}
|
||
});
|
||
});
|
||
|
||
// 音调变换控制
|
||
document.querySelectorAll('input[name="pitchShift"]').forEach(radio => {
|
||
radio.addEventListener('change', (e) => {
|
||
if (e.target.checked) {
|
||
const pitchShift = parseInt(e.target.value);
|
||
applyPitchShift(pitchShift);
|
||
}
|
||
});
|
||
});
|
||
|
||
// 监听原生视频事件（通过 Video.js 已经处理，这里移除重复的事件监听）
|
||
// 所有事件现在通过 Video.js 的事件系统处理
|
||
|
||
// 进度条点击跳转
|
||
progressBar.addEventListener('click', handleProgressBarClick);
|
||
|
||
// 画布尺寸适配
|
||
window.addEventListener('resize', resizeCanvas);
|
||
|
||
// 初始化画布尺寸
|
||
resizeCanvas();
|
||
|
||
// 初始化 Video.js 播放器
|
||
document.addEventListener('DOMContentLoaded', () => {
|
||
console.log('DOM 加载完成，初始化 Video.js...');
|
||
initVideoPlayer();
|
||
});
|
||
</script>
|
||
</body>
|
||
|
||
</html> |