{"id":8655,"date":"2023-02-28T14:06:50","date_gmt":"2023-02-28T06:06:50","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=8655"},"modified":"2024-01-12T09:49:56","modified_gmt":"2024-01-12T01:49:56","slug":"pcm%e6%96%87%e4%bb%b6%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=8655","title":{"rendered":"pcm\u6587\u4ef6\u8be6\u89e3"},"content":{"rendered":"<p><a href=\"https:\/\/blog.csdn.net\/qq_28258885\/article\/details\/120197122\">https:\/\/blog.csdn.net\/qq_28258885\/article\/details\/120197122<\/a><br \/>\n<a href=\"https:\/\/blog.51cto.com\/u_12127193\/5738409\">https:\/\/blog.51cto.com\/u_12127193\/5738409<\/a><br \/>\n<a href=\"https:\/\/blog.csdn.net\/dong__ge\/article\/details\/126128225\">https:\/\/blog.csdn.net\/dong__ge\/article\/details\/126128225<\/a><\/p>\n<h3>\u4e0e\u89c6\u9891\u7f16\u7801\u5bf9\u6bd4<\/h3>\n<p>1.pcm\u76f8\u5f53\u4e8e\u89c6\u9891\u91cc\u7684YUV\u6570\u636e<br \/>\n2.\u591a\u58f0\u9053\u76f8\u5f53\u4e8eYUV\uff0c\u4e5f\u4f1a\u6709\u4e00\u5b9a\u7684\u6392\u5217\u987a\u5e8f\u3002<\/p>\n<h3>\u76f8\u5173\u516c\u5f0f<\/h3>\n<p>1.\u7801\u7387\u3001\u6bd4\u7279\u7387bit_rate\uff08bps\uff09 = \u91c7\u6837\u9891\u7387sample_rate <em> \u91c7\u6837\u4f4d\u6570format <\/em> \u58f0\u9053\u6570channels<\/p>\n<p>2.\u97f3\u9891\u6570\u636e\u5927\u5c0f\uff08byte\uff09 = \u65f6\u957ftime <em> \uff08\u91c7\u6837\u9891\u7387sample_rate <\/em> \u91c7\u6837\u4f4d\u6570format <em> \u58f0\u9053\u6570channels\uff09= \u65f6\u957f<\/em>\u7801\u7387<\/p>\n<p>\u8ba1\u7b97\u793a\u4f8b\uff1a<br \/>\n<img src=\"http:\/\/xinyiworld.top\/wordpress_it\/wp-content\/uploads\/2023\/02\/pcm.png\" alt=\"\" \/><\/p>\n<pre><code class=\"language-bash\">\u7801\u7387=44100 * 8 = 352800bit\/s\n\u6587\u4ef6\u5927\u5c0f=2646016byte=2646016*8bit=21168128bit\n\u65f6\u957f=\u6587\u4ef6\u5927\u5c0f\/\u7801\u7387=21168128\/352800=60s<\/code><\/pre>\n<button class=\"simplefavorite-button\" data-postid=\"8655\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>https:\/\/blog.csdn.net\/qq_28258885\/article\/details\/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[887],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8655"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8655"}],"version-history":[{"count":6,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8655\/revisions"}],"predecessor-version":[{"id":11395,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8655\/revisions\/11395"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8655"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}