{"id":196,"date":"2025-11-25T09:22:13","date_gmt":"2025-11-25T01:22:13","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=196"},"modified":"2025-11-25T09:22:13","modified_gmt":"2025-11-25T01:22:13","slug":"html5%e8%b0%83%e7%94%a8%e6%91%84%e5%83%8f%e5%a4%b4%e6%88%aa%e5%9b%be%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/25\/html5%e8%b0%83%e7%94%a8%e6%91%84%e5%83%8f%e5%a4%b4%e6%88%aa%e5%9b%be%e5%8a%9f%e8%83%bd\/","title":{"rendered":"html5\u8c03\u7528\u6444\u50cf\u5934\u622a\u56fe\u529f\u80fd"},"content":{"rendered":"\n<p>\u963f\u6770\uff0c\u4f60\u60f3\u7528 <strong>HTML5 \u8c03\u7528\u6444\u50cf\u5934\u5e76\u622a\u56fe<\/strong>\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 <strong><code>getUserMedia<\/code> + <code>&lt;video&gt;<\/code> + <code>&lt;canvas&gt;<\/code><\/strong> \u5b9e\u73b0\u3002\u4e0b\u9762\u7ed9\u4f60\u4e00\u4e2a\u5b8c\u6574\u793a\u4f8b\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;!DOCTYPE html&gt;\n&amp;lt;html lang=&quot;zh-CN&quot;&gt;\n&amp;lt;head&gt;\n&amp;lt;meta charset=&quot;UTF-8&quot;&gt;\n&amp;lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;\n&amp;lt;title&gt;HTML5 \u6444\u50cf\u5934\u622a\u56fe Demo&amp;lt;\/title&gt;\n&amp;lt;style&gt;\n  body { text-align: center; font-family: Arial; background: #f0f0f0; }\n  video, canvas { border: 1px solid #ccc; margin-top: 20px; }\n  button { margin-top: 10px; padding: 10px 20px; font-size: 16px; }\n&amp;lt;\/style&gt;\n&amp;lt;\/head&gt;\n&amp;lt;body&gt;\n\n&amp;lt;h1&gt;\u6444\u50cf\u5934\u622a\u56fe&amp;lt;\/h1&gt;\n\n&amp;lt;video id=&quot;video&quot; width=&quot;400&quot; height=&quot;300&quot; autoplay playsinline&gt;&amp;lt;\/video&gt;\n&amp;lt;br&gt;\n&amp;lt;button id=&quot;snap&quot;&gt;\u62cd\u7167&amp;lt;\/button&gt;\n&amp;lt;br&gt;\n&amp;lt;canvas id=&quot;canvas&quot; width=&quot;400&quot; height=&quot;300&quot;&gt;&amp;lt;\/canvas&gt;\n\n&amp;lt;script&gt;\nconst video = document.getElementById(&#039;video&#039;);\nconst canvas = document.getElementById(&#039;canvas&#039;);\nconst context = canvas.getContext(&#039;2d&#039;);\nconst snapButton = document.getElementById(&#039;snap&#039;);\n\n\/\/ 1\ufe0f\u20e3 \u83b7\u53d6\u6444\u50cf\u5934\u89c6\u9891\u6d41\nnavigator.mediaDevices.getUserMedia({ video: true, audio: false })\n  .then(stream =&gt; {\n    video.srcObject = stream;\n    video.play();\n  })\n  .catch(err =&gt; {\n    alert(&#039;\u6444\u50cf\u5934\u65e0\u6cd5\u8bbf\u95ee: &#039; + err);\n  });\n\n\/\/ 2\ufe0f\u20e3 \u70b9\u51fb\u6309\u94ae\u622a\u56fe\nsnapButton.addEventListener(&#039;click&#039;, () =&gt; {\n  context.drawImage(video, 0, 0, canvas.width, canvas.height);\n  \/\/ \u53ef\u5c06\u622a\u56fe\u8f6c\u4e3a base64\n  const dataURL = canvas.toDataURL(&#039;image\/png&#039;);\n  console.log(dataURL);\n});\n&amp;lt;\/script&gt;\n\n&amp;lt;\/body&gt;\n&amp;lt;\/html&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u7279\u6027\u8bf4\u660e<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>navigator.mediaDevices.getUserMedia<\/code><\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8bf7\u6c42\u6444\u50cf\u5934\u6743\u9650<\/li>\n\n\n\n<li><code>{ video: true, audio: false }<\/code> \u8868\u793a\u53ea\u5f00\u542f\u6444\u50cf\u5934<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>&lt;video><\/code><\/strong>\n<ul class=\"wp-block-list\">\n<li>\u7528\u4e8e\u5b9e\u65f6\u663e\u793a\u6444\u50cf\u5934\u753b\u9762<\/li>\n\n\n\n<li><code>playsinline<\/code> \u907f\u514d iOS \u81ea\u52a8\u5168\u5c4f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>&lt;canvas><\/code> + <code>drawImage<\/code><\/strong>\n<ul class=\"wp-block-list\">\n<li>\u7528\u4e8e\u622a\u56fe<\/li>\n\n\n\n<li>\u53ef\u4ee5\u751f\u6210 base64 \u56fe\u50cf\u7528\u4e8e\u4e0a\u4f20\u6216\u4fdd\u5b58<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u79fb\u52a8\u7aef\u517c\u5bb9<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>playsinline<\/code> \u5fc5\u987b\u5728 iOS Safari \u4e0a\u4fdd\u6301\u5185\u5d4c\u64ad\u653e<\/li>\n\n\n\n<li>\u5b89\u5353\u3001\u684c\u9762\u6d4f\u89c8\u5668\u76f4\u63a5\u652f\u6301<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 \u6269\u5c55\u529f\u80fd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4fdd\u5b58\u622a\u56fe<\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst link = document.createElement(&#039;a&#039;);\nlink.href = canvas.toDataURL(&#039;image\/png&#039;);\nlink.download = &#039;snapshot.png&#039;;\nlink.click();\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6dfb\u52a0\u6ee4\u955c<\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ncontext.filter = &#039;grayscale(100%)&#039;;\ncontext.drawImage(video, 0, 0, canvas.width, canvas.height);\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7ed3\u5408 Web Worker<\/strong> \u505a\u5b9e\u65f6\u5904\u7406\uff08\u5982\u4eba\u8138\u8bc6\u522b\u3001\u6ee4\u955c\u7279\u6548\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u660e\u767d\u4e86\uff0c\u963f\u6770\uff01\u4e0b\u9762\u7ed9\u4f60\u4e00\u4e2a <strong>\u5b8c\u6574 HTML5 \u6444\u50cf\u5934\u622a\u56fe + \u6ee4\u955c\u7279\u6548 + \u4e0a\u4f20\u540e\u53f0 Demo<\/strong>\uff0c\u7279\u70b9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8c03\u7528\u6444\u50cf\u5934\u5b9e\u65f6\u9884\u89c8<\/li>\n\n\n\n<li>\u652f\u6301\u622a\u56fe<\/li>\n\n\n\n<li>\u53ef\u9009\u62e9\u4e0d\u540c\u6ee4\u955c\uff08\u7070\u5ea6\u3001\u53cd\u8272\u3001\u6a21\u7cca\uff09<\/li>\n\n\n\n<li>\u622a\u56fe\u53ef\u4e0a\u4f20\u5230\u540e\u53f0\uff08\u793a\u4f8b\u7528 <code>fetch<\/code> POST\uff09<\/li>\n\n\n\n<li>\u79fb\u52a8\u7aef\u548c\u684c\u9762\u7aef\u517c\u5bb9<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;!DOCTYPE html&gt;\n&amp;lt;html lang=&quot;zh-CN&quot;&gt;\n&amp;lt;head&gt;\n&amp;lt;meta charset=&quot;UTF-8&quot;&gt;\n&amp;lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;\n&amp;lt;title&gt;\u6444\u50cf\u5934\u622a\u56fe+\u6ee4\u955c+\u4e0a\u4f20 Demo&amp;lt;\/title&gt;\n&amp;lt;style&gt;\n  body { text-align: center; font-family: Arial; background: #f0f0f0; }\n  video, canvas { border: 1px solid #ccc; margin-top: 20px; }\n  select, button { margin-top: 10px; padding: 8px 16px; font-size: 16px; }\n&amp;lt;\/style&gt;\n&amp;lt;\/head&gt;\n&amp;lt;body&gt;\n\n&amp;lt;h1&gt;\u6444\u50cf\u5934\u622a\u56fe + \u6ee4\u955c + \u4e0a\u4f20&amp;lt;\/h1&gt;\n\n&amp;lt;video id=&quot;video&quot; width=&quot;400&quot; height=&quot;300&quot; autoplay playsinline&gt;&amp;lt;\/video&gt;\n&amp;lt;br&gt;\n\n&amp;lt;label for=&quot;filter&quot;&gt;\u9009\u62e9\u6ee4\u955c:&amp;lt;\/label&gt;\n&amp;lt;select id=&quot;filter&quot;&gt;\n  &amp;lt;option value=&quot;none&quot;&gt;\u65e0\u6ee4\u955c&amp;lt;\/option&gt;\n  &amp;lt;option value=&quot;grayscale(100%)&quot;&gt;\u7070\u5ea6&amp;lt;\/option&gt;\n  &amp;lt;option value=&quot;invert(100%)&quot;&gt;\u53cd\u8272&amp;lt;\/option&gt;\n  &amp;lt;option value=&quot;blur(3px)&quot;&gt;\u6a21\u7cca&amp;lt;\/option&gt;\n&amp;lt;\/select&gt;\n&amp;lt;br&gt;\n\n&amp;lt;button id=&quot;snap&quot;&gt;\u62cd\u7167&amp;lt;\/button&gt;\n&amp;lt;button id=&quot;upload&quot;&gt;\u4e0a\u4f20\u622a\u56fe&amp;lt;\/button&gt;\n&amp;lt;br&gt;\n\n&amp;lt;canvas id=&quot;canvas&quot; width=&quot;400&quot; height=&quot;300&quot;&gt;&amp;lt;\/canvas&gt;\n\n&amp;lt;script&gt;\nconst video = document.getElementById(&#039;video&#039;);\nconst canvas = document.getElementById(&#039;canvas&#039;);\nconst ctx = canvas.getContext(&#039;2d&#039;);\nconst snapButton = document.getElementById(&#039;snap&#039;);\nconst uploadButton = document.getElementById(&#039;upload&#039;);\nconst filterSelect = document.getElementById(&#039;filter&#039;);\n\n\/\/ 1\ufe0f\u20e3 \u83b7\u53d6\u6444\u50cf\u5934\nnavigator.mediaDevices.getUserMedia({ video: true, audio: false })\n  .then(stream =&gt; {\n    video.srcObject = stream;\n    video.play();\n  })\n  .catch(err =&gt; {\n    alert(&#039;\u65e0\u6cd5\u8bbf\u95ee\u6444\u50cf\u5934: &#039; + err);\n  });\n\n\/\/ 2\ufe0f\u20e3 \u62cd\u7167\u622a\u56fe\nsnapButton.addEventListener(&#039;click&#039;, () =&gt; {\n  \/\/ \u5148\u5e94\u7528\u6ee4\u955c\n  ctx.filter = filterSelect.value;\n  ctx.drawImage(video, 0, 0, canvas.width, canvas.height);\n});\n\n\/\/ 3\ufe0f\u20e3 \u4e0a\u4f20\u622a\u56fe\nuploadButton.addEventListener(&#039;click&#039;, () =&gt; {\n  const dataURL = canvas.toDataURL(&#039;image\/png&#039;); \/\/ base64\n  \/\/ \u53d1\u9001\u5230\u540e\u53f0\n  fetch(&#039;\/upload&#039;, {\n    method: &#039;POST&#039;,\n    headers: { &#039;Content-Type&#039;: &#039;application\/json&#039; },\n    body: JSON.stringify({ image: dataURL })\n  })\n  .then(res =&gt; res.json())\n  .then(data =&gt; {\n    alert(&#039;\u4e0a\u4f20\u6210\u529f: &#039; + JSON.stringify(data));\n  })\n  .catch(err =&gt; {\n    alert(&#039;\u4e0a\u4f20\u5931\u8d25: &#039; + err);\n  });\n});\n&amp;lt;\/script&gt;\n\n&amp;lt;\/body&gt;\n&amp;lt;\/html&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 \u529f\u80fd\u8bf4\u660e<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6444\u50cf\u5934\u9884\u89c8<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>getUserMedia({video:true})<\/code> \u83b7\u53d6\u89c6\u9891\u6d41<\/li>\n\n\n\n<li><code>playsinline<\/code> \u4fdd\u8bc1 iOS \u5185\u5d4c\u64ad\u653e<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6ee4\u955c\u6548\u679c<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>ctx.filter = ...<\/code> \u652f\u6301 CSS \u6ee4\u955c<\/li>\n\n\n\n<li>\u53ef\u5b9e\u65f6\u5728\u622a\u56fe\u4e0a\u5e94\u7528\u6ee4\u955c<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u622a\u56fe<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>canvas.drawImage(video,0,0)<\/code> \u6355\u83b7\u5f53\u524d\u89c6\u9891\u5e27<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4e0a\u4f20\u540e\u53f0<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06 <code>canvas.toDataURL('image\/png')<\/code> \u8f6c base64<\/li>\n\n\n\n<li>\u7528 <code>fetch<\/code> POST \u5230\u540e\u53f0\u63a5\u53e3 <code>\/upload<\/code>\uff08\u4f60\u53ef\u4ee5\u6362\u6210\u771f\u5b9e\u63a5\u53e3\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u79fb\u52a8\u7aef\u517c\u5bb9<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u624b\u6307\u6ed1\u52a8\u4e0d\u4f1a\u89e6\u53d1\u5168\u5c4f<\/li>\n\n\n\n<li>\u5b89\u5353\u3001iOS\u3001\u684c\u9762\u6d4f\u89c8\u5668\u5747\u53ef\u4f7f\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u963f\u6770\uff0c\u4f60\u60f3\u7528 HTML5 \u8c03\u7528\u6444\u50cf\u5934\u5e76\u622a\u56fe\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 getUserMedi&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2025\/11\/25\/html5%e8%b0%83%e7%94%a8%e6%91%84%e5%83%8f%e5%a4%b4%e6%88%aa%e5%9b%be%e5%8a%9f%e8%83%bd\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-196","post","type-post","status-publish","format-standard","hentry","category-html5"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=196"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/196\/revisions"}],"predecessor-version":[{"id":197,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/196\/revisions\/197"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}