{"id":74776,"date":"2024-01-15T23:55:08","date_gmt":"2024-01-15T15:55:08","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=74776"},"modified":"2024-01-15T23:55:08","modified_gmt":"2024-01-15T15:55:08","slug":"cssmys","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/74776.html","title":{"rendered":"Constant Bitrate\u662f\u4ec0\u4e48\u610f\u601d"},"content":{"rendered":"

  Constant Bitrate\uff0c\u7b80\u79f0CBR\uff0c\u662f\u6307\u5728\u6570\u5b57\u97f3\u9891\u6216\u89c6\u9891\u7f16\u7801\u4e2d\u4f7f\u7528\u56fa\u5b9a\u6bd4\u7279\u7387\u7684\u4e00\u79cd\u6280\u672f\u3002\u4f7f\u7528CBR\u7f16\u7801\u65f6\uff0c\u6bcf\u79d2\u8f93\u51fa\u7684\u6570\u636e\u91cf\u662f\u6052\u5b9a\u7684\uff0c\u65e0\u8bba\u8f93\u5165\u4fe1\u53f7\u7684\u590d\u6742\u7a0b\u5ea6\u3002\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8CBR\u6280\u672f\u7684\u539f\u7406\u3001\u5e94\u7528\u548c\u4f18\u7f3a\u70b9\u3002<\/p>\n

CBR\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n

  CBR\u7f16\u7801\u57fa\u4e8e\u56fa\u5b9a\u6bd4\u7279\u7387\u7684\u7406\u5ff5\uff0c\u901a\u8fc7\u5728\u4e00\u5b9a\u65f6\u95f4\u6bb5\u5185\u5206\u914d\u56fa\u5b9a\u7684\u6bd4\u7279\u7387\u6765\u4fdd\u8bc1\u8f93\u51fa\u6570\u636e\u6d41\u7684\u7a33\u5b9a\u6027\u3002\u4f8b\u5982\uff0c\u5728\u97f3\u9891\u7f16\u7801\u4e2d\uff0cCBR\u53ef\u4ee5\u4fdd\u8bc1\u6bcf\u79d2\u8f93\u51fa\u56fa\u5b9a\u6bd4\u7279\u7387\u7684\u97f3\u9891\u6570\u636e\uff0c\u65e0\u8bba\u97f3\u9891\u5185\u5bb9\u662f\u9759\u97f3\u8fd8\u662f\u9ad8\u97f3\u91cf\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u6570\u636e\u6d41\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n

  CBR\u7f16\u7801\u7684\u5e94\u7528\u8303\u56f4<\/h3>\n

  CBR\u6280\u672f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u97f3\u9891\u548c\u89c6\u9891\u7684\u5728\u7ebf\u6d41\u5a92\u4f53\u4f20\u8f93\u4e2d\uff0c\u5982\u7f51\u7edc\u76f4\u64ad\u3001\u5728\u7ebf\u97f3\u4e50\u548c\u89c6\u9891\u70b9\u64ad\u7b49\u3002\u7531\u4e8eCBR\u53ef\u4ee5\u63d0\u4f9b\u7a33\u5b9a\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\uff0c\u56e0\u6b64\u5728\u9700\u8981\u8f83\u9ad8\u6570\u636e\u9884\u6d4b\u6027\u548c\u5b9e\u65f6\u6027\u7684\u573a\u666f\u4e2d\u5f97\u5230\u4e86\u5145\u5206\u5e94\u7528\u3002<\/p>\n

  CBR\u7684\u4f18\u7f3a\u70b9<\/h3>\n

  \u5728\u97f3\u9891\u548c\u89c6\u9891\u7f16\u7801\u4e2d\uff0cCBR\u6280\u672f\u6709\u5176\u72ec\u7279\u7684\u4f18\u70b9\u548c\u5c40\u9650\u6027\u3002\u4f18\u70b9\u5305\u62ec\u6570\u636e\u6d41\u7a33\u5b9a\u3001\u5b9e\u65f6\u6027\u5f3a\u3001\u5bf9\u7f51\u7edc\u4f20\u8f93\u7a33\u5b9a\u6027\u8981\u6c42\u8f83\u4f4e\uff0c\u7b80\u5316\u4e86\u63a5\u6536\u65b9\u7684\u89e3\u7801\u5904\u7406\u7b49\u3002\u7136\u800c\uff0cCBR\u4e5f\u5b58\u5728\u4e00\u5b9a\u7684\u7f3a\u70b9\uff0c\u5982\u96be\u4ee5\u9002\u5e94\u8f93\u5165\u4fe1\u53f7\u53d8\u5316\u3001\u6d6a\u8d39\u4e86\u90e8\u5206\u7801\u7387\u8d44\u6e90\u7b49\u3002<\/p>\n

CBR\u4e0eVBR\u7684\u6bd4\u8f83<\/h2>\n

  Variable Bitrate\uff0c\u7b80\u79f0VBR\uff0c\u4e0eCBR\u76f8\u5bf9\u5e94\uff0c\u662f\u6307\u6839\u636e\u8f93\u5165\u4fe1\u53f7\u590d\u6742\u5ea6\u52a8\u6001\u53d8\u5316\u7684\u7f16\u7801\u6280\u672f\u3002VBR\u5728\u5bf9\u5f85\u8f93\u5165\u4fe1\u53f7\u7684\u5904\u7406\u4e0a\u66f4\u52a0\u667a\u80fd\u5316\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u90e8\u5206\u7684\u590d\u6742\u5ea6\u5206\u914d\u4e0d\u540c\u7684\u6bd4\u7279\u7387\uff0c\u56e0\u6b64\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5f25\u8865\u4e86CBR\u7684\u4e0d\u8db3\u3002<\/p>\n

  VBR\u7684\u4f18\u70b9<\/h3>\n

  VBR\u6280\u672f\u53ef\u4ee5\u66f4\u597d\u5730\u9002\u5e94\u97f3\u9891\u548c\u89c6\u9891\u8f93\u5165\u4fe1\u53f7\u7684\u53d8\u5316\uff0c\u4ece\u800c\u5728\u4fdd\u8bc1\u97f3\u89c6\u9891\u8d28\u91cf\u7684\u524d\u63d0\u4e0b\u5b9e\u73b0\u66f4\u9ad8\u7684\u538b\u7f29\u6bd4\u3002\u5728\u97f3\u4e50\u3001\u7535\u5f71\u7b49\u573a\u666f\u4e2d\uff0cVBR\u6280\u672f\u53ef\u4ee5\u66f4\u597d\u5730\u8868\u73b0\u51fa\u8f93\u5165\u4fe1\u53f7\u7684\u7279\u6027\uff0c\u63d0\u4f9b\u66f4\u597d\u7684\u97f3\u89c6\u9891\u4f53\u9a8c\u3002<\/p>\n

  VBR\u7684\u7f3a\u70b9<\/h3>\n

  \u76f8\u6bd4CBR\uff0cVBR\u6280\u672f\u5728\u7f51\u7edc\u4f20\u8f93\u548c\u63a5\u6536\u7aef\u89e3\u7801\u5904\u7406\u4e0a\u4f1a\u76f8\u5bf9\u590d\u6742\u4e00\u4e9b\uff0c\u800c\u4e14\u5bf9\u7f51\u7edc\u4f20\u8f93\u8d28\u91cf\u7684\u8981\u6c42\u4e5f\u66f4\u9ad8\u3002\u6b64\u5916\uff0c\u5728\u4e00\u4e9b\u5bf9\u6570\u636e\u6d41\u7a33\u5b9a\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f\u4e2d\uff0cVBR\u53ef\u80fd\u65e0\u6cd5\u5b8c\u5168\u80dc\u4efb\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u5728\u97f3\u9891\u548c\u89c6\u9891\u7f16\u7801\u4e2d\uff0cCBR\u4f5c\u4e3a\u4e00\u79cd\u56fa\u5b9a\u6bd4\u7279\u7387\u7684\u7f16\u7801\u6280\u672f\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u4f18\u70b9\u548c\u7f3a\u70b9\u3002<\/strong>\u5176\u4e3b\u8981\u5e94\u7528\u4e8e\u5bf9\u6570\u636e\u4f20\u8f93\u5b9e\u65f6\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f\uff0c\u5982\u5728\u7ebf\u76f4\u64ad\u548c\u97f3\u89c6\u9891\u901a\u8bdd\u3002\u7136\u800c\uff0c\u968f\u7740\u7f51\u7edc\u548c\u6280\u672f\u7684\u8fdb\u6b65\uff0cVBR\u6280\u672f\u4e5f\u9010\u6e10\u5f97\u5230\u4e86\u66f4\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5c24\u5176\u662f\u5728\u5bf9\u97f3\u89c6\u9891\u8d28\u91cf\u6709\u66f4\u9ad8\u8981\u6c42\u7684\u573a\u666f\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

ConstantBitrate\uff0c\u7b80\u79f0CBR\uff0c\u662f\u6307\u5728\u6570\u5b57\u97f3\u9891\u6216\u89c6\u9891\u7f16\u7801\u4e2d\u4f7f\u7528\u56fa\u5b9a\u6bd4\u7279\u7387\u7684\u4e00\u79cd\u6280\u672f\u3002\u4f7f\u7528CBR\u7f16\u7801\u65f6\uff0c\u6bcf\u79d2\u8f93\u51fa\u7684\u6570\u636e\u91cf\u662f\u6052\u5b9a\u7684\uff0c\u65e0\u8bba\u8f93\u5165\u4fe1\u53f7\u7684\u590d\u6742\u7a0b\u5ea6\u3002\u5728\u672c<\/p>\n","protected":false},"author":1,"featured_media":64183,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[52],"class_list":["post-74776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-wxtx"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/74776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=74776"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/74776\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/64183"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=74776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=74776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=74776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}