{"id":127991,"date":"2020-06-07T09:43:41","date_gmt":"2020-06-07T01:43:41","guid":{"rendered":"http:\/\/4563.org\/?p=127991"},"modified":"2020-06-07T09:43:41","modified_gmt":"2020-06-07T01:43:41","slug":"%e5%85%b3%e4%ba%8e%e8%a7%86%e9%a2%91%e7%bc%96%e8%a7%a3%e7%a0%81%e7%9a%84%e4%b8%80%e4%ba%9b%e7%96%91%e9%97%ae%ef%bc%8c%e6%b1%82%e5%a4%a7%e7%a5%9e%e8%a7%a3%e7%ad%94","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=127991","title":{"rendered":"\u5173\u4e8e\u89c6\u9891\u7f16\u89e3\u7801\u7684\u4e00\u4e9b\u7591\u95ee\uff0c\u6c42\u5927\u795e\u89e3\u7b54"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u5173\u4e8e\u89c6\u9891\u7f16\u89e3\u7801\u7684\u4e00\u4e9b\u7591\u95ee\uff0c\u6c42\u5927\u795e\u89e3\u7b54               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zpole <\/span>  <span><i><\/i> 7<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u89c6\u9891\u7f16\u7801\u6210 I P B \u5e27\u5230\u53d8\u6210\u4e00\u4e2a\u6587\u4ef6\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6709\u6ca1\u6709\u5176\u4ed6\u7684\u538b\u7f29\u8fc7\u7a0b\uff1f\u7f16\u7801\u540e I \u5e27\u662f rgb \u6216 yuv \u7b49\u539f\u59cb\u6570\u636e\u7684\u56fe\u7247\u8fd8\u662f\u50cf jpg \u4e4b\u7c7b\u7684\u8fd8\u6709\u5176\u4ed6\u538b\u7f29\uff1f\u6709\u6ca1\u6709\u53ef\u80fd\u4e0d\u89e3\u7801\uff0c\u5728\u4fdd\u7559 p b \u5e27\u539f\u59cb\u6570\u636e(\u5373\u5173\u4e8e i \u5e27\u7684\u76f8\u5bf9\u53d8\u5316\uff09\u65f6\uff0c\u6362\u6389 i \u5e27\uff0c\u5e94\u7528\u573a\u666f\u6bd4\u5982\u89c6\u9891\u62a0\u56fe\uff0c\u80cc\u666f\u9759\u6b62\u65f6\u53ea\u8981 i \u5e27\u62a0\u56fe\u6362\u80cc\u666f\u662f\u4e0d\u662f\u5c31\u591f\u4e86\uff1f<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>7<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"2132738\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : coderluan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             I \u5e27\u4e5f\u662f\u538b\u7f29\u7684, \u6bd4\u5982\u8fd9\u5e27\u56fe\u50cf\u5c31\u662f\u4e00\u9762\u767d\u5899, \u4e0d\u538b\u7f29\u5f97\u591a\u8822, \u4e5f\u5c31\u662f\u8bf4\u4f60\u4e0d\u89e3\u7801\u662f\u5f97\u4e0d\u5230\u539f\u59cb\u56fe\u50cf\u7684.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132739\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : zpole <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @coderluan \u662f\u5440\u3002\u90a3\u6211\u5982\u4f55\u4fdd\u8bc1 decode \u6362\u5b8c i \u4ee5\u540e\uff0c\u518d encode p b \u4e0d\u53d8\u5462                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132740\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : coderluan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u4e2a\u8fc7\u7a0b\u4e00\u822c\u53eb intra prediction, \u4e5f\u5c31\u662f\u5e27\u5185\u9884\u6d4b, \u4e00\u822c\u662f\u5148\u5206\u5757\u518d\u538b\u7f29\u7684, \u5177\u4f53\u7684\u538b\u7f29\u7b97\u6cd5\u770b\u7f16\u7801\u6807\u51c6.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132741\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : coderluan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @zpole \u6ca1\u592a\u5f04\u660e\u767d\u4f60\u7684\u9700\u6c42, \u64ad\u653e\u89c6\u9891\u548c\u89c6\u9891\u5904\u7406\u5b9e\u9645\u662f\u4e0d\u4e00\u6837\u7684, \u5b9e\u9645\u4e0a\u89c6\u9891\u5904\u7406\u5c31\u662f\u5904\u7406\u89e3\u7801\u4e4b\u540e\u7684\u56fe\u7247, \u7136\u540e\u518d\u538b\u7f29, \u6240\u4ee5\u548c\u89c6\u9891\u7f16\u7801\u65e0\u5173\u4e86, \u800c\u662f\u89c6\u9891\u5904\u7406\u8f6f\u4ef6\u81ea\u5df1\u63d0\u4f9b\u4e00\u4e2a\u590d\u5236\u64cd\u4f5c\u7684\u529f\u80fd\u800c\u5df2.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132742\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : msg7086 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u7f16\u7801\u540e\u7684\u5e27\u5c31\u662f\u8fd9\u4e2a\u7f16\u7801\u4e86\u5440\u3002<\/p>\n<p>\u6bd4\u5982\u8bf4\uff0c\u4f60\u7528 JPG \u7f16\u7801\u5668\u7f16\u7801\u4e00\u5f20\u56fe\u7247\uff0c\u7f16\u7801\u5b8c\u7684\u6570\u636e\u5c31\u662f\u300c JPG \u300d\u4e86\u3002<br \/>\u540c\u7406\u4f60\u7528 x265 \u7f16\u7801\u5668\u7f16\u7801\u4e00\u5f20\u56fe\u7247\uff0c\u7f16\u7801\u5b8c\u7684\u6570\u636e\u5c31\u662f\u300c h.265 \u300d\u4e86\u3002<\/p>\n<p>PB \u5e27\u5b58\u50a8\u7684\u662f\u6b8b\u5dee\uff0c\u4f60\u53ea\u66ff\u6362 I \u5e27\u5f53\u7136\u662f\u53ef\u4ee5\u7684\uff0c\u66ff\u6362\u5b8c\u4ee5\u540e\u65b0\u7684\u6b8b\u5dee\u90fd\u4f1a\u57fa\u4e8e\u65b0\u7684 I \u5e27\u6765\u6e32\u67d3\u3002\u5e73\u65f6\u5982\u679c\u89c6\u9891\u6587\u4ef6\u635f\u574f\uff0c\u6709\u65f6\u5019\u4f60\u4f1a\u770b\u5230\u6709\u4e00\u6bb5\u4f1a\u51fa\u73b0\u753b\u9762\u4e00\u5c0f\u90e8\u5206\u5728\u79fb\u52a8\u6216\u8005\u663e\u9732\u51fa\u539f\u672c\u753b\u9762\u7684\u6548\u679c\uff0c\u8fd9\u5c31\u662f\u5178\u578b\u7684\u53c2\u8003\u5e27\u6ca1\u4e86\uff0c\u6240\u4ee5\u62ff buffer \u91cc\u9519\u8bef\u7684\u5e27\u4f5c\u53c2\u8003\u5bf9\u8c61\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u5b9e\u9645\u7684\u89c6\u9891\u91cc\u80cc\u666f\u4e00\u822c\u662f\u4e0d\u4f1a\u9759\u6b62\u7684\uff0c\u4f1a\u6709\u6444\u5f71\u566a\u58f0\u3002\u5982\u679c\u4f60\u63d0\u524d\u7528\u6ee4\u955c\u5bf9\u566a\u58f0\u505a\u8fc7\u6ee4\uff0c\u6216\u8005\u5728\u7f16\u7801\u7684\u65f6\u5019\u5728\u6b8b\u5dee\u5224\u5b9a\u91cc\u76f4\u63a5\u8df3\u8fc7\u5c0f\u5bb9\u91cf\u6b8b\u5dee\u7684\u8bdd\uff0c\u5012\u662f\u53ef\u4ee5\u505a\u5230\u7684\u3002\u4f46\u662f\u753b\u9762\u7f16\u7801\u7684\u6700\u5c0f\u5355\u4f4d\u662f\u5757\uff08 h.264 \u662f mb\uff0ch.265 \u662f cu \uff09\uff0c\u6240\u4ee5\u6700\u5c11\u4e5f\u662f\u4e00\u5757\u4e00\u5757\u751f\u6548\u7684\u3002<\/p>\n<p>\u8981\u8fbe\u5230\u4f60\u8bf4\u7684\u90a3\u79cd\u6548\u679c\uff0c\u66ff\u6362\u5e27\u7684\u505a\u6cd5\u662f\u975e\u5e38\u4e0d\u73b0\u5b9e\u7684\uff0c\u7814\u53d1\u6210\u672c\u9ad8\u5f97\u60ca\u4eba\uff0c\u6548\u679c\u7a00\u70c2\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132743\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : hanguofu <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u95ee\u9898\u6bd4\u8f83\u591a\uff0c\u6211\u5c31\u4ee5 264 \u4e3a\u4f8b\u89e3\u7b54\u4e00\u4e0b\uff1a \u7f16\u7801\u540e I \u5e27\u662f rgb \u6216 yuv \u7b49\u539f\u59cb\u6570\u636e\u7684\u56fe\u7247\u8fd8\u662f\u50cf jpg \u4e4b\u7c7b\u7684\u8fd8\u6709\u5176\u4ed6\u538b\u7f29\uff1f&#8212; \u7c7b\u4f3c jpg \u4e4b\u7c7b\u7684. \u6709\u6ca1\u6709\u53ef\u80fd\u4e0d\u89e3\u7801\uff0c\u5728\u4fdd\u7559 p b \u5e27\u539f\u59cb\u6570\u636e(\u5373\u5173\u4e8e i \u5e27\u7684\u76f8\u5bf9\u53d8\u5316\uff09\u65f6\uff0c\u6362\u6389 i \u5e27&#8212;&#8212;&#8211;\u4e0d\u89e3\u7801\u4f60\u662f\u4e0d\u4f1a\u77e5\u9053\u54ea\u4e2a\u662f IPB \u5e27 \u3002 p b \u5e27 \u662f\u5fc5\u987b\u4ee5 i \u5e27\u4e3a\u53c2\u8003\uff0c\u5982\u679c\u4f60\u6362\u6389 i \u5e27\uff0c p b \u5e27\u5f88\u53ef\u80fd\u89e3\u4e0d\u51fa\u6765\u3002\u89c6\u9891\u62a0\u56fe\u8fd8\u662f\u8981\u5148\u89e3\u7801\u7684\u3002\u80cc\u666f\u9759\u6b62\u65f6\u53ea\u8981 i \u5e27\u6362\u80cc\u666f &#8212;&#8211;\u4f60\u60f3\u5f97\u592a\u7b80\u5355\u4e86\uff0c \u80cc\u666f\u201d\u9759\u6b62\u201c \u65f6\uff0c\u8fd9\u65f6\u5019\u4e5f\u6709\u53ef\u80fd\u7f16\u7801\u5668\u7f16\u51fa p b \u5e27 \uff0c \u800c\u4e0d\u662f\u4ec5\u7528 i \u5e27 \u63cf\u8ff0\u80cc\u666f\u9759\u6b62\u65f6\u7684\u56fe\u50cf\u3002\u9664\u975e\u4f60\u5728\u542f\u52a8\u7f16\u7801\u5668\u7684\u65f6\u5019\uff0c\u5c31\u6307\u660e\u4e86\u7f16\u7801\u5668\u53ea\u5141\u8bb8\u7f16\u51fa I \u5e27 \u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2132744\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : wnpllrzodiac <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6362\u80cc\u666f\u8fd8\u662f\u8981\u7f16\u7801\u524d\u505a\u5427\u3002\u540e\u505a\u662f\u5b9e\u65f6\u52a0\u7eff\u5e55\uff1f\u4eba\u5de5\u667a\u80fd segment \u53ef\u4ee5\u505a\u3002\u80cc\u666f\u524d\u666f\u533a\u5206\u51fa\u6765\uff0c\u52a0 mask \u5c31\u53ef\u4ee5\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u4e8e\u89c6\u9891\u7f16\u89e3\u7801\u7684\u4e00\u4e9b\u7591\u95ee\uff0c\u6c42\u5927\u795e\u89e3&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/127991"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=127991"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/127991\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127991"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}