{"id":518,"date":"2022-01-31T19:26:10","date_gmt":"2022-01-31T11:26:10","guid":{"rendered":"http:\/\/192.168.0.122:8088\/?p=518"},"modified":"2022-01-31T19:26:10","modified_gmt":"2022-01-31T11:26:10","slug":"ffprobe%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-2","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=518","title":{"rendered":"FFprobe\u6e90\u7801\u5206\u6790-2"},"content":{"rendered":"\n<p>\u4e0a\u4e00\u7bc7\u8bb2\u5b8c \u547d\u4ee4\u884c\u53c2\u6570 \u662f\u5982\u4f55\u89e3\u6790\u5230\u5168\u5c40\u53d8\u91cf\u7684\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u5206\u6790 <code class=\"prettyprint\" >writer_open()<\/code> \u51fd\u6570\uff0c<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1216\" height=\"544\" src=\".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png\" alt=\"\" class=\"wp-image-513\"\/><\/figure>\n\n\n\n<p>FFprobe \u652f\u6301\u51e0\u79cd\u8f93\u51fa\u683c\u5f0f\uff0c<code class=\"prettyprint\" >default<\/code>\uff0c<code>xml<\/code>\uff0c<code>json<\/code>\u3002\u6bcf\u79cd\u683c\u5f0f\u90fd\u6709\u5404\u81ea\u7684 <code>Writer<\/code>\uff0c<code>xml_writer<\/code>\uff0c<code>json_writer<\/code>\uff0c<code>default_writer<\/code> \u7b49\u7b49\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >writer_open()<\/code> \u8fd9\u4e2a\u51fd\u6570\u4e3b\u8981\u662f\u521d\u59cb\u5316 <code>WriterContext<\/code>\u3002\u4e0b\u56fe\u4ee5 <code>default_writer<\/code> \u4e3a\u4f8b\uff0c\u5c55\u793a\u521d\u59cb\u5316\u5b8c\u6210\u4e4b\u540e\u7684\u6570\u636e\u7ed3\u6784\u5173\u7cfb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"955\" height=\"729\" src=\".\/wp-content\/uploads\/2022\/01\/FFprobe-2-2.png\" alt=\"\" class=\"wp-image-514\"\/><\/figure>\n\n\n\n<p>\u4e0a\u56fe\u7684\u6570\u636e\u7ed3\u6784\u975e\u5e38\u7cbe\u5999\uff0c\u4ed6\u5b9a\u4e49\u4e00\u4e2a <code class=\"prettyprint\" >struct WriterContext<\/code> \u4f5c\u4e3a\u4e00\u4e2a\u901a\u7528 <code>writer<\/code> \u7684\u4e0a\u4e0b\u6587\uff0c<code>AVClass<\/code> \u91cc\u9762\u6709\u4e00\u4e2a <code>writer_options<\/code> \u901a\u7528\u8bbe\u7f6e\u3002\u7136\u540e\u4ed6\u91cc\u9762\u8fd8\u6709\u4e00\u4e2a <code>void * priv<\/code> \u7528\u6765\u5b58\u50a8\u4e0d\u901a\u7528\u7684<code>context<\/code>\uff0c\u8fd9\u4e2a <code>context<\/code> \u91cc\u9762\u4e5f\u6709\u4e00\u4e2a <code>default_option<\/code> \u4f5c\u4e3a\u72ec\u7acb\u7684\u8bbe\u7f6e\u9009\u9879\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd \u901a\u7528 <code class=\"prettyprint\" >context<\/code> \u5957 \u72ec\u7acb<code>contexnt<\/code> \u7684\u7528\u6cd5\uff0c\u5728 <code>ffmpeg<\/code> \u6574\u4e2a\u9879\u76ee\u662f\u975e\u5e38\u5e38\u89c1\u7684\uff0c\u597d\u51e0\u5904\u5730\u65b9\u90fd\u662f\u5982\u6b64\uff0c\u63a8\u8350\u9605\u8bfb\u96f7\u795e\u6587\u7ae0\uff0c<a href=\"https:\/\/blog.csdn.net\/leixiaohua1020\/article\/details\/44279329\">\u7ed3\u6784\u4f53\u6210\u5458\u7ba1\u7406\u7cfb\u7edf-AVOption<\/a><\/p>\n\n\n\n<p>\u8fd9\u5c31\u662f\u5185\u6838+\u63d2\u4ef6\u7684\u6a21\u5f0f\u3002\u901a\u7528\u7684\u5c31\u662f\u5185\u6838\uff0c\u4e0d\u901a\u7528\u7684\u5c31\u662f\u63d2\u4ef6\u3002\u4f8b\u5982<\/p>\n\n\n\n<p><code class=\"prettyprint\" >AVCodecContext<\/code> \u91cc\u9762\u5305\u4e00\u4e2a\u72ec\u7acb\u7684 <code>H264 contexnt<\/code>\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >AVCodecContext<\/code> \u91cc\u9762\u5305\u4e00\u4e2a\u72ec\u7acb\u7684 <code>HEVC contexnt<\/code>\u3002<\/p>\n\n\n\n<p>\u7528 <code class=\"prettyprint\" >ffmpeg<\/code> \u7f16\u89e3\u7801 <code>api<\/code>\uff0c\u53ea\u9700\u7528\u5230 <code>AVCodecContext<\/code>\u3002<\/p>\n\n\n\n<p>\u5176\u5b9e\u4e0d\u5fc5\u592a\u8fc7\u7ea0\u7ed3 writer \u7684\u5b9e\u73b0\uff0c\u628a\u4ed6\u770b\u6210\u4e00\u4e2a print \u7684\u5c01\u88c5\u5c31\u884c\uff0cwriter \u4e0d\u4f1a\u5f71\u54cd\u5230\u7f16\u89e3\u7801\u4e4b\u7c7b\u7684\u4e1c\u897f\uff0cwriter\u53ea\u662f\u51b3\u5b9a\u8f93\u51fa\u683c\u5f0f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u00a9\u7248\u6743\u6240\u5c5e\uff1a\u77e5\u8bc6\u661f\u7403\uff1a\u5f26\u5916\u4e4b\u97f3\uff0cQQ\uff1a2338195090\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u7b14\u8005\u7684\u6c34\u5e73\u6709\u9650\uff0c \u52a0\u4e4b\u7f16\u5199\u7684\u540c\u65f6\u8fd8\u8981\u53c2\u4e0e\u5f00\u53d1\u5de5\u4f5c\uff0c\u6587\u4e2d\u96be\u514d\u4f1a\u51fa\u73b0\u4e00\u4e9b\u9519\u8bef\u6216\u8005\u4e0d\u51c6\u786e\u7684\u5730\u65b9\uff0c\u6073\u8bf7\u8bfb\u8005\u6279\u8bc4\u6307\u6b63\u3002\u5982\u679c\u8bfb\u8005\u6709\u4efb\u4f55\u5b9d\u8d35\u610f\u89c1\uff0c\u53ef\u4ee5\u52a0\u6211\u5fae\u4fe1 Loken1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0a\u4e00\u7bc7\u8bb2\u5b8c \u547d\u4ee4\u884c\u53c2\u6570 \u662f\u5982\u4f55\u89e3\u6790\u5230\u5168\u5c40\u53d8\u91cf\u7684\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u5206\u6790 writer_open() \u51fd\u6570\uff0c FFpr [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-518","post","type-post","status-publish","format-standard","hentry","category-ffprobe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.xianwaizhiyin.net\/?p=518\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"og:description\" content=\"\u4e0a\u4e00\u7bc7\u8bb2\u5b8c \u547d\u4ee4\u884c\u53c2\u6570 \u662f\u5982\u4f55\u89e3\u6790\u5230\u5168\u5c40\u53d8\u91cf\u7684\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u5206\u6790 writer_open() \u51fd\u6570\uff0c FFpr [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.xianwaizhiyin.net\/?p=518\" \/>\n<meta property=\"og:site_name\" content=\"\u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-31T11:26:10+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/.\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"loken\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#website\",\"url\":\"https:\/\/www.xianwaizhiyin.net\/\",\"name\":\"\u5f26\u5916\u4e4b\u97f3\",\"description\":\"FFmpeg\u3001WebRTC\uff0cSRS \u97f3\u89c6\u9891\u3001\u6d41\u5a92\u4f53\u6280\u672f\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.xianwaizhiyin.net\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=518#primaryimage\",\"inLanguage\":\"zh-Hans\",\"url\":\".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png\",\"contentUrl\":\".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=518#webpage\",\"url\":\"https:\/\/www.xianwaizhiyin.net\/?p=518\",\"name\":\"FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3\",\"isPartOf\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=518#primaryimage\"},\"datePublished\":\"2022-01-31T11:26:10+00:00\",\"dateModified\":\"2022-01-31T11:26:10+00:00\",\"author\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=518#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.xianwaizhiyin.net\/?p=518\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=518#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.xianwaizhiyin.net\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"FFprobe\u6e90\u7801\u5206\u6790-2\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3\",\"name\":\"loken\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#personlogo\",\"inLanguage\":\"zh-Hans\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/f6320b5256dc36ef4243e0acf26144b8ac2668b478302ad154e95ce3202bc421?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/f6320b5256dc36ef4243e0acf26144b8ac2668b478302ad154e95ce3202bc421?s=96&d=mm&r=g\",\"caption\":\"loken\"},\"sameAs\":[\"https:\/\/www.xianwaizhiyin.net\/\"],\"url\":\"https:\/\/www.xianwaizhiyin.net\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.xianwaizhiyin.net\/?p=518","og_locale":"zh_CN","og_type":"article","og_title":"FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3","og_description":"\u4e0a\u4e00\u7bc7\u8bb2\u5b8c \u547d\u4ee4\u884c\u53c2\u6570 \u662f\u5982\u4f55\u89e3\u6790\u5230\u5168\u5c40\u53d8\u91cf\u7684\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u5206\u6790 writer_open() \u51fd\u6570\uff0c FFpr [&hellip;]","og_url":"https:\/\/www.xianwaizhiyin.net\/?p=518","og_site_name":"\u5f26\u5916\u4e4b\u97f3","article_published_time":"2022-01-31T11:26:10+00:00","og_image":[{"url":".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png"}],"twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"loken"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/www.xianwaizhiyin.net\/#website","url":"https:\/\/www.xianwaizhiyin.net\/","name":"\u5f26\u5916\u4e4b\u97f3","description":"FFmpeg\u3001WebRTC\uff0cSRS \u97f3\u89c6\u9891\u3001\u6d41\u5a92\u4f53\u6280\u672f","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.xianwaizhiyin.net\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"ImageObject","@id":"https:\/\/www.xianwaizhiyin.net\/?p=518#primaryimage","inLanguage":"zh-Hans","url":".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png","contentUrl":".\/wp-content\/uploads\/2022\/01\/FFprobe-2-1.png"},{"@type":"WebPage","@id":"https:\/\/www.xianwaizhiyin.net\/?p=518#webpage","url":"https:\/\/www.xianwaizhiyin.net\/?p=518","name":"FFprobe\u6e90\u7801\u5206\u6790-2 - \u5f26\u5916\u4e4b\u97f3","isPartOf":{"@id":"https:\/\/www.xianwaizhiyin.net\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.xianwaizhiyin.net\/?p=518#primaryimage"},"datePublished":"2022-01-31T11:26:10+00:00","dateModified":"2022-01-31T11:26:10+00:00","author":{"@id":"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3"},"breadcrumb":{"@id":"https:\/\/www.xianwaizhiyin.net\/?p=518#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.xianwaizhiyin.net\/?p=518"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.xianwaizhiyin.net\/?p=518#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.xianwaizhiyin.net\/"},{"@type":"ListItem","position":2,"name":"FFprobe\u6e90\u7801\u5206\u6790-2"}]},{"@type":"Person","@id":"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3","name":"loken","image":{"@type":"ImageObject","@id":"https:\/\/www.xianwaizhiyin.net\/#personlogo","inLanguage":"zh-Hans","url":"https:\/\/secure.gravatar.com\/avatar\/f6320b5256dc36ef4243e0acf26144b8ac2668b478302ad154e95ce3202bc421?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f6320b5256dc36ef4243e0acf26144b8ac2668b478302ad154e95ce3202bc421?s=96&d=mm&r=g","caption":"loken"},"sameAs":["https:\/\/www.xianwaizhiyin.net\/"],"url":"https:\/\/www.xianwaizhiyin.net\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts\/518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=518"}],"version-history":[{"count":1,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts\/518\/revisions"}],"predecessor-version":[{"id":519,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts\/518\/revisions\/519"}],"wp:attachment":[{"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}