{"id":7787,"date":"2018-07-14T14:20:01","date_gmt":"2018-07-14T06:20:01","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=7787"},"modified":"2018-07-14T14:20:01","modified_gmt":"2018-07-14T06:20:01","slug":"html5-video-double-speed-play","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2018\/07\/html5-video-double-speed-play\/","title":{"rendered":"\u63ed\u79d8\u89c6\u9891\u7f51\u7ad9video\u89c6\u9891\u500d\u901f\u64ad\u653e\u7684\u5b9e\u73b0"},"content":{"rendered":"

by zhangxinxu<\/a> from https:\/\/www.zhangxinxu.com\/wordpress\/?p=7787<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u5f97\u5230\u539f\u4f5c\u8005\u4e66\u9762\u8bb8\u53ef\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\uff0c\u6458\u8981\u5f15\u6d41\u5219\u968f\u610f\u3002<\/p>\n

\u4e00\u3001\u5173\u4e8e\u89c6\u9891\u500d\u901f\u64ad\u653e<\/h3>\n

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\"B\u7ad9\u89c6\u9891\u64ad\u653e\u901f\u5ea6\u8c03\u8282\"<\/p>\n

\"\u817e\u8baf\u89c6\u9891\u500d\u901f\u64ad\u653e\"<\/p>\n

\u8fd9\u4e2a\u529f\u80fd\u5bf9\u4e8e\u5f53\u4e0b\u5feb\u8282\u594f\u7684\u751f\u6d3b\u800c\u8a00\uff0c\u662f\u5f88\u6709\u7528\u7684\uff0c\u8bf4\u5938\u5f20\u70b9\u662f\u5ef6\u957f\u4e86\u6211\u4eec\u7684\u751f\u547d\uff0c\u54c8\u54c8\u54c8\u3002<\/p>\n

\u5bf9\u4e8e\u4e00\u4e2a\u9760\u6280\u672f\u5403\u996d\u4eba\uff0c\u603b\u514d\u4e0d\u4e86\u5173\u6ce8\u70b9\u5728\u6280\u672f\u5b9e\u73b0\u4e0a\uff0c\u7a76\u7adf\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u5462\uff1f\u4e14\u770b~<\/p>\n

\u4e8c\u3001HTML5 video\u89c6\u9891\u500d\u901f\u64ad\u653e\u7684\u5b9e\u73b0<\/h3>\n

\u5f53\u5f53\u5f53\u5f53\uff0c\u5b9e\u73b0\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u4f7f\u7528playbackRate<\/code>\u5c5e\u6027\u63a7\u5236\u4e0b\u5c31\u597d\u4e86\u3002<\/p>\n

playbackRate<\/code>\u5c5e\u6027\u662f\u4e2a\u53ef\u8bfb\u5199\u7684\u63a7\u5236\u97f3\u89c6\u9891\u64ad\u653e\u901f\u7387\u7684\u5c5e\u6027\u3002<\/p>\n

\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

\/\/ \u89c6\u9891\u83b7\u53d6\u901f\u7387<\/span>\nvar videoSpeed = video.playbackRate;\n\/\/ \u89c6\u9891\u8bbe\u7f6e\u64ad\u653e\u901f\u7387\uff0c\u5982\u6b63\u5e38\u901f\u5ea6\u64ad\u653e<\/span>\nvideo.playbackRate = 1.0;\n\/\/ \u83b7\u53d6\u97f3\u9891\u64ad\u653e\u901f\u7387<\/span>\nvar audioSpeed = audio.playbackRate;\n\/\/ \u97f3\u9891\u8bbe\u7f6e\u64ad\u653e\u901f\u7387\uff0c\u5982\u6b63\u5e38\u901f\u5ea6\u64ad\u653e<\/span>\naudio.playbackRate = 1.0;<\/pre>\n
\u500d\u901f\u64ad\u653e\u63a7\u5236\u7b80\u6613demo<\/h4>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aHTML5 video\u89c6\u9891playbackRate\u500d\u901f\u64ad\u653edemo<\/a><\/p>\n
\u4f8b\u5982\uff0c\u6211\u4eec\u4e0b\u62c9\u9009\u62e92.0\u500d\u901f\uff0c\u7136\u540e\u70b9\u51fb\u4e0b\u9762\u7684\u64ad\u653e\u6309\u94ae\uff1a<\/p>\n
\"\u500d\u901f\u64addemo\u64cd\u4f5c\u793a\u610f\"<\/p>\n
\u5c31\u53ef\u4ee5\u770b\u5230\u571f\u5473\u89c6\u9891\u6548\u679c\u4e86\u3002<\/p>\n
\"2\u500d\u901f\u571f\u5473\u89c6\u9891\u6548\u679c\u5b9e\u73b0\"<\/p>\n
\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
var select = document.querySelector('select');\nvar button = document.querySelector('button');\n\/\/ \u89c6\u9891\u5143\u7d20<\/span>\nvar video = document.querySelector('video');\n\/\/ \u6539\u53d8\u64ad\u653e\u901f\u7387<\/span>\nselect.addEventListener('change', function () {\n    video.playbackRate = this.value;\n});\n\/\/ \u70b9\u51fb\u64ad\u653e\u6309\u94ae<\/span>\nbutton.addEventListener('click', function () {\n    video.play();\n});<\/pre>\n
\u5176\u5b9e\u5173\u952e\u4ee3\u7801\u5c31\u4e0b\u9762\u8fd9\u4e00\u884c\uff1a<\/p>\n
video.playbackRate = this.value;<\/pre>\n
\u662f\u4e0d\u662f\u7b80\u5355\u5f97\u6709\u70b9\u8d85\u4e4e\u60f3\u8c61\u4e86\u5462\uff1f<\/p>\n
\u4e09\u3001\u7ed3\u675f\u8bed<\/h3>\n
\u500d\u901f\u64ad\u653e\u662fHTML5 video\u89c6\u9891\u64ad\u653e\u5929\u7136\u652f\u6301\u529f\u80fd\uff0c\u56e0\u6b64\uff0c\u89c6\u9891\u7f51\u7ad9\u901a\u5e38\u500d\u901f\u64ad\u653e\u53ea\u5728HTML5\u89c6\u9891\u64ad\u653e\u5668\u4e2d\u652f\u6301\uff0c\u4f20\u7edf\u7684flash\u64ad\u653e\u5668\u6ca1\u6709\u8fd9\u4e2a\u529f\u80fd\uff0c\u4f8b\u5982\u7231\u5947\u827a\u89c6\u9891\uff1a<\/p>\n
\"\u7231\u5947\u827aHTML5\u89c6\u9891\u500d\u901f\u64ad\u653e\" \"\u7231\u5947\u827aflash\u89c6\u9891\u65e0\u500d\u901f\u64ad\u653e\"<\/p>\n
\u590f\u65e5\u708e\u708e\uff0c\u5c31\u8fd9\u4e9b\uff0c\u4e00\u4e2a\u6280\u672f\u5c0ftips\uff0c\u5e0c\u671b\u80fd\u591f\u8ba9\u4f60\u6709\u6240\u6536\u83b7\u3002<\/p>\n
\u611f\u8c22\u9605\u8bfb\uff0c\u6b22\u8fce\u4ea4\u6d41\uff01<\/p>\n
<\/p>\n
\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
\n\u672c\u6587\u5730\u5740\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=7787<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
B\u7ad9\uff0c\u6216\u8005\u817e\u8baf\u89c6\u9891\u7b49\u4e3b\u6d41\u89c6\u9891\u7f51\u7ad9\u89c6\u9891\u73b0\u5728\u90fd\u652f\u6301\u500d\u901f\u64ad\u653e\u529f\u80fd\u3002\u8fd9\u4e2a\u529f\u80fd\u5bf9\u4e8e\u5f53\u4e0b\u5feb\u8282\u594f\u7684\u751f\u6d3b\u800c\u8a00\uff0c\u662f\u5f88\u6709\u7528\u7684\uff0c\u8bf4\u5938\u5f20\u70b9\u662f\u5ef6\u957f\u4e86\u6211\u4eec\u7684\u751f\u547d\uff0c\u54c8\u54c8\u54c8\u3002<\/p>\n
\u5bf9\u4e8e\u4e00\u4e2a\u9760\u6280\u672f\u5403\u996d\u4eba\uff0c\u603b\u514d\u4e0d\u4e86\u5173\u6ce8\u70b9\u5728\u6280\u672f\u5b9e\u73b0\u4e0a\uff0c\u7a76\u7adf\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u5462\uff1f\u4e14\u770b~<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1097],"tags":[52,1279,340,1278,236,1277],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7787"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=7787"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7787\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=7787"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=7787"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=7787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}