{"id":2782,"date":"2021-09-22T18:22:34","date_gmt":"2021-09-22T10:22:34","guid":{"rendered":"http:\/\/www.51cos.com\/?p=2782"},"modified":"2021-09-22T18:23:12","modified_gmt":"2021-09-22T10:23:12","slug":"h-264%e6%9c%89%e5%9b%9b%e7%a7%8d%e7%94%bb%e8%b4%a8%e7%ba%a7%e5%88%ab%e5%88%86%e5%88%ab%e6%98%afbp%e3%80%81ep%e3%80%81mp%e3%80%81hp%ef%bc%9a","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=2782","title":{"rendered":"H.264\u6709\u56db\u79cd\u753b\u8d28\u7ea7\u522b,\u5206\u522b\u662fBP\u3001EP\u3001MP\u3001HP\uff1a"},"content":{"rendered":"

 <\/p>\n

H.264\u6709\u56db\u79cd\u753b\u8d28\u7ea7\u522b,\u5206\u522b\u662fBP\u3001EP\u3001MP\u3001HP\uff1a<\/p>\n

1\u3001BP-Baseline Profile\uff1a\u57fa\u672c\u753b\u8d28\u3002\u652f\u6301I\/P \u5e27\uff0c\u53ea\u652f\u6301\u65e0\u4ea4\u9519\uff08Progressive\uff09\u548cCAVLC\uff1b<\/p>\n

2\u3001EP-Extended profile\uff1a\u8fdb\u9636\u753b\u8d28\u3002\u652f\u6301I\/P\/B\/SP\/SI \u5e27\uff0c\u53ea\u652f\u6301\u65e0\u4ea4\u9519\uff08Progressive\uff09\u548cCAVLC\uff1b<\/p>\n

3\u3001MP-Main profile\uff1a\u4e3b\u6d41\u753b\u8d28\u3002\u63d0\u4f9bI\/P\/B \u5e27\uff0c\u652f\u6301\u65e0\u4ea4\u9519\uff08Progressive\uff09\u548c\u4ea4\u9519\uff08Interlaced\uff09\uff0c\u4e5f\u652f\u6301CAVLC \u548cCABAC \u7684\u652f\u6301\uff1b<\/p>\n

4\u3001HP-High profile\uff1a\u9ad8\u7ea7\u753b\u8d28\u3002\u5728main Profile \u7684\u57fa\u7840\u4e0a\u589e\u52a0\u4e868×8\u5185\u90e8\u9884\u6d4b\u3001\u81ea\u5b9a\u4e49\u91cf\u5316\u3001 \u65e0\u635f\u89c6\u9891\u7f16\u7801\u548c\u66f4\u591a\u7684YUV \u683c\u5f0f\uff1b<\/p>\n

\u60f3\u8981\u8bf4\u660eH.264 HP\u4e0eH.264 MP\u7684\u533a\u522b\u5c31\u8981\u8bb2\u5230H.264\u7684\u6280\u672f\u53d1\u5c55\u4e86\u3002JVT\u4e8e2003\u5e74\u5b8c\u6210H.264\u57fa\u672c\u90e8\u5206\u6807\u51c6\u5236\u5b9a\u5de5\u4f5c\uff0c\u5305\u542bBaseline profile\u3001Extended profile\u548cMain profile\uff0c\u5206\u522b\u5305\u62ec\u4e0d\u540c\u7684\u7f16\u7801\u5de5\u5177\u3002\u4e4b\u540eJVT\u53c8\u5b8c\u6210\u4e86H.264 FRExt\uff08\u5373\uff1aFidelity Range Extensions\uff09\u6269\u5c55\u90e8\u5206\uff08Amendment\uff09\u7684\u5236\u5b9a\u5de5\u4f5c\uff0c\u5305\u62ecHigh profile\uff08HP\uff09\u3001High 10 profile\uff08Hi10P\uff09\u3001High 4:2:2 profile\uff08Hi422P\uff09\u3001High 4:4:4 profile\uff08Hi444P\uff094\u4e2aprofile\u3002<\/p>\n

H.264 Baseline profile\u3001Extended profile\u548cMain profile\u90fd\u662f\u9488\u5bf98\u4f4d\u6837\u672c\u6570\u636e\u30014:2:0\u683c\u5f0f\u7684\u89c6\u9891\u5e8f\u5217\uff0cFRExt\u5c06\u5176\u6269\u5c55\u52308\uff5e12\u4f4d\u6837\u672c\u6570\u636e\uff0c\u89c6\u9891\u683c\u5f0f\u53ef\u4ee5\u4e3a4:2:0\u30014:2:2\u30014:4:4\uff0c\u8bbe\u7acb\u4e86High profile\uff08HP\uff09\u3001High 10 profile\uff08Hi10P\uff09\u3001High 4:2:2 profile\uff08Hi422P\uff09\u3001High 4:4:4 profile\uff08Hi444P\uff09 4\u4e2aprofile\uff0c\u8fd94\u4e2aprofile\u90fd\u4ee5Main profile\u4e3a\u57fa\u7840\u3002<\/p>\n

\u5728\u76f8\u540c\u914d\u7f6e\u60c5\u51b5\u4e0b\uff0cHigh profile\uff08HP\uff09\u53ef\u4ee5\u6bd4Main profile\uff08MP\uff09\u8282\u770110%\u7684\u7801\u6d41\u91cf\uff0c\u6bd4MPEG-2 MP\u8282\u770160%\u7684\u7801\u6d41\u91cf\uff0c\u5177\u6709\u66f4\u597d\u7684\u7f16\u7801\u6027\u80fd\u3002\u6839\u636e\u5e94\u7528\u9886\u57df\u7684\u4e0d\u540c\uff0cBaseline profile\u591a\u5e94\u7528\u4e8e\u5b9e\u65f6\u901a\u4fe1\u9886\u57df\uff0cMain profile\u591a\u5e94\u7528\u4e8e\u6d41\u5a92\u4f53\u9886\u57df\uff0cHigh profile\u5219\u591a\u5e94\u7528\u4e8e\u5e7f\u7535\u548c\u5b58\u50a8\u9886\u57df\u3002<\/p>\n

H.264 Baseline Profile\u5bf9\u5e94MPEG-4 SP
\nH.264 Main Profile\u5bf9\u5e94MPEG-4 ASP
\nH.264 Extended Profile\u5bf9\u5e94MPEG-4 ARTS or FGS
\nH.264 Baseline Profile\u5bf9\u5e94MPEG-4 Studio\u3002<\/p>\n

H.264 Profile\u3001Level\u3001Encoder\u4e09\u5f20\u7b80\u56fe<\/h2>\n

\uff081\uff09h.264 profile
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\uff082\uff09h.264 level
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\uff083\uff09h.264 software encoder
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n","protected":false},"excerpt":{"rendered":"

  H.264\u6709\u56db\u79cd\u753b\u8d28\u7ea7\u522b,\u5206\u522b\u662fBP\u3001EP\u3001MP\u3001HP\uff1a 1\u3001BP-Baseline Profi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2782","post","type-post","status-publish","format-standard","hentry","category-embedded"],"_links":{"self":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2782"}],"version-history":[{"count":1,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2782\/revisions"}],"predecessor-version":[{"id":2787,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2782\/revisions\/2787"}],"wp:attachment":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2782"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}