{"id":404,"date":"2022-01-31T18:20:17","date_gmt":"2022-01-31T10:20:17","guid":{"rendered":"http:\/\/192.168.0.122:8088\/?p=404"},"modified":"2022-06-11T03:12:01","modified_gmt":"2022-06-10T19:12:01","slug":"ffmpeg%e5%91%bd%e4%bb%a4%e5%88%86%e6%9e%90-acc","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=404","title":{"rendered":"ffmpeg\u547d\u4ee4\u5206\u6790-acc"},"content":{"rendered":"\n<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a<a href=\"https:\/\/pan.baidu.com\/s\/1VpUvpLhew-nuq4Dns80mOw\">\u767e\u5ea6\u7f51\u76d8<\/a> \u63d0\u53d6\u7801\uff1ag3k8<\/p>\n\n\n\n<p>\u672c\u7cfb\u5217\u4e3b\u8981\u5206\u6790\u5404\u79cd ffmpeg \u547d\u4ee4\u53c2\u6570 \u5728\u4ee3\u7801\u91cc\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002a.mp4\u4e0b\u8f7d\u94fe\u63a5\uff1a<a href=\"https:\/\/pan.baidu.com\/s\/1RN1xRsQDGx65MGyB_T1IzA\">\u767e\u5ea6\u7f51\u76d8<\/a>\uff0c\u63d0\u53d6\u7801\uff1anl0s \u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u547d\u4ee4\u5982\u4e0b\uff1a<code class=\"prettyprint\" >ffmpeg -i a.mp4 -vn -acodec copy output.aac<\/code><\/p>\n\n\n\n<p>FFmpeg \u62bd\u53d6\u97f3\u89c6\u9891\u6587\u4ef6 \u4e2d\u7684 AAC \u97f3\u9891 \u6d41\uff0c\u4e0e\u4e0a\u4e00\u6761\u547d\u4ee4 <code class=\"prettyprint\" >ffmpeg -i a.mp4 -vn -acodec copy output.mp4<\/code> \u76f8\u6bd4\u3002<\/p>\n\n\n\n<p>\u53ea\u662f\u5c01\u88c5\u683c\u5f0f\u4e0d\u540c\uff0c\u8fd9\u7bc7\u6587\u7ae0\u5c31\u6765\u8bb2\u89e3\uff0c\u5982\u679c\u8f93\u51fa\u6587\u4ef6\u4e0d\u662f mp4\uff0c\u800c\u662faac\u7684\u5c01\u88c5\u683c\u5f0f\uff0cffmpeg\u662f\u5982\u4f55\u5904\u7406\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u547d\u4ee4\u884c\u53c2\u6570 -vn \u4e0a\u7bc7\u6587\u7ae0\u5df2\u7ecf\u8bb2\u89e3\u8fc7\u5b83\u7684\u5b9e\u73b0\u539f\u7406\uff0c\u5c31\u4e0d\u518d\u91cd\u590d\u8bb2\u89e3\u4e86\u3002<\/p>\n\n\n\n<p>\u8f93\u51fa\u6587\u4ef6 output.aac \u8ddf output.mp4 \uff0c\u683c\u5f0f\u867d\u7136\u4e0d\u540c\uff0c\u4f46\u5728 ffmpeg.c \u8fd9\u4e2a\u5de5\u7a0b\u91cc\u9762\u5176\u5b9e\u5e76\u6ca1\u6709\u505a\u4efb\u4f55\u7279\u6b8a\u7684\u5904\u7406\uff0c\u4f60\u8c03 ffmpeg \u7684api\u51fd\u6570 avio_open2()\uff0c\u53ea\u8981\u4f20\u9012\u4e0d\u540c\u540e\u7f00\u7684\u6587\u4ef6\u540d\uff0cavio_open2 \u5185\u90e8\u5c31\u4f1a\u6839\u636e\u4e0d\u540c\u7684\u6587\u4ef6\u540d\u540e\u7f00\uff0c\u751f\u6210\u4e0d\u540c\u7684 AVOutputFormat \u653e\u8fdb\u53bb AVFormatContext \u7684 oformat \u5b57\u6bb5\u91cc\u3002<\/p>\n\n\n\n<p>\u8bf7\u770b\u4e0b\u56fe\uff0c\u5728 avio_open2() \u540e\u9762\u6253\u4e86\u65ad\u70b9\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1506\" height=\"754\" src=\".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png\" alt=\"\" class=\"wp-image-405\"\/><\/figure>\n\n\n\n<p>\u7136\u540e\uff0c\u5728ffmpeg 4.2 \u7684\u6e90\u7801\u91cc\u641c\u7d22 \"ADTS AAC (Advanced Audio Coding)\" \u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u53d1\u73b0 aac \u7684\u5c01\u88c5\u683c\u5f0f\u662f\u5728 libavformat \u76ee\u5f55\u7684 adtsenc.c \u91cc\u9762\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >libavformat\/adtsenc.c 229\u884c\nAVOutputFormat ff_adts_muxer = {\n    .name              = &quot;adts&quot;,\n    .long_name         = NULL_IF_CONFIG_SMALL(&quot;ADTS AAC (Advanced Audio Coding)&quot;),\n    .mime_type         = &quot;audio\/aac&quot;,\n    .extensions        = &quot;aac,adts&quot;,\n    .priv_data_size    = sizeof(ADTSContext),\n    .audio_codec       = AV_CODEC_ID_AAC,\n    .video_codec       = AV_CODEC_ID_NONE,\n    .init              = adts_init,\n    .write_header      = adts_write_header,\n    .write_packet      = adts_write_packet,\n    .write_trailer     = adts_write_trailer,\n    .priv_class        = &amp;adts_muxer_class,\n    .flags             = AVFMT_NOTIMESTAMPS,\n};<\/code><\/pre>\n\n\n\n<p>MP4 \u540e\u7f00\u7684\u6587\u4ef6\u540d\uff0c\u539f\u7406\u7c7b\u4f3c\uff0cmp4 \u7684\u5c01\u88c5\u683c\u5f0f\u6587\u4ef6\u662f libavformat\/movenc.c\uff0c\u5177\u4f53\u81ea\u884c\u67e5\u770b\u3002<\/p>\n\n\n\n<p>\u867d\u7136 aac \u662f\u7f16\u7801\u5c42\u7684\u5c01\u88c5\u683c\u5f0f\uff0cmp4 \u662f\u5bb9\u5668\u5c42\u7684\u683c\u5f0f\uff0c\u4f46\u662fffmpeg\u628a\u4ed6\u4eec\u90fd\u653e\u5230\u4e86 libavformat \u4e0b\uff0c\u4e2a\u4eba\u89c9\u5f97\u6bd4\u8f83\u65b0\u5947\u3002<\/p>\n\n\n\n<p>\u603b\u7ed3\uff1a<\/p>\n\n\n\n<p>ffmpeg \u5b9e\u73b0\u4e0d\u540c\u5c01\u88c5\u683c\u5f0f\uff0c\u662f\u901a\u8fc7\u4e00\u79cd\u591a\u6001\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\u3002\u4e0d\u540c\u540e\u7f00\uff0c\u5c31\u7528\u4e0d\u540c\u7684AVOutputFormat\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u5728\u4f7f\u7528 avio_open2() API\u51fd\u6570\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u4e0d\u7ba1\u5e95\u5c42\u5b9e\u73b0\uff0c\u76f4\u63a5\u4f20\u9012\u4e0d\u540c\u540e\u7f00\u7684\u6587\u4ef6\u540d \u5373\u53ef\u5b8c\u6210\u4e0d\u540c\u683c\u5f0f\u7684\u5c01\u88c5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u7248\u6743\u6240\u5c5e\uff1a\u77e5\u8bc6\u661f\u7403\uff1a\u5f26\u5916\u4e4b\u97f3\uff0cQQ\uff1a2338195090\u3002 \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>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a\u767e\u5ea6\u7f51\u76d8 \u63d0\u53d6\u7801\uff1ag3k8 \u672c\u7cfb\u5217\u4e3b\u8981\u5206\u6790\u5404\u79cd ff [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,17],"tags":[],"class_list":["post-404","post","type-post","status-publish","format-standard","hentry","category-ffmpeg","category-ffmpeg-cmds"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ffmpeg\u547d\u4ee4\u5206\u6790-acc - \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=404\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ffmpeg\u547d\u4ee4\u5206\u6790-acc - \u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"og:description\" content=\"\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a\u767e\u5ea6\u7f51\u76d8 \u63d0\u53d6\u7801\uff1ag3k8 \u672c\u7cfb\u5217\u4e3b\u8981\u5206\u6790\u5404\u79cd ff [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.xianwaizhiyin.net\/?p=404\" \/>\n<meta property=\"og:site_name\" content=\"\u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-31T10:20:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-10T19:12:01+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/.\/wp-content\/uploads\/2022\/01\/cmd-12-1.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\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\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=404#primaryimage\",\"inLanguage\":\"zh-Hans\",\"url\":\".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png\",\"contentUrl\":\".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=404#webpage\",\"url\":\"https:\/\/www.xianwaizhiyin.net\/?p=404\",\"name\":\"ffmpeg\u547d\u4ee4\u5206\u6790-acc - \u5f26\u5916\u4e4b\u97f3\",\"isPartOf\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=404#primaryimage\"},\"datePublished\":\"2022-01-31T10:20:17+00:00\",\"dateModified\":\"2022-06-10T19:12:01+00:00\",\"author\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=404#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.xianwaizhiyin.net\/?p=404\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.xianwaizhiyin.net\/?p=404#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.xianwaizhiyin.net\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ffmpeg\u547d\u4ee4\u5206\u6790-acc\"}]},{\"@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":"ffmpeg\u547d\u4ee4\u5206\u6790-acc - \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=404","og_locale":"zh_CN","og_type":"article","og_title":"ffmpeg\u547d\u4ee4\u5206\u6790-acc - \u5f26\u5916\u4e4b\u97f3","og_description":"\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a\u767e\u5ea6\u7f51\u76d8 \u63d0\u53d6\u7801\uff1ag3k8 \u672c\u7cfb\u5217\u4e3b\u8981\u5206\u6790\u5404\u79cd ff [&hellip;]","og_url":"https:\/\/www.xianwaizhiyin.net\/?p=404","og_site_name":"\u5f26\u5916\u4e4b\u97f3","article_published_time":"2022-01-31T10:20:17+00:00","article_modified_time":"2022-06-10T19:12:01+00:00","og_image":[{"url":".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png"}],"twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"loken","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"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=404#primaryimage","inLanguage":"zh-Hans","url":".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png","contentUrl":".\/wp-content\/uploads\/2022\/01\/cmd-12-1.png"},{"@type":"WebPage","@id":"https:\/\/www.xianwaizhiyin.net\/?p=404#webpage","url":"https:\/\/www.xianwaizhiyin.net\/?p=404","name":"ffmpeg\u547d\u4ee4\u5206\u6790-acc - \u5f26\u5916\u4e4b\u97f3","isPartOf":{"@id":"https:\/\/www.xianwaizhiyin.net\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.xianwaizhiyin.net\/?p=404#primaryimage"},"datePublished":"2022-01-31T10:20:17+00:00","dateModified":"2022-06-10T19:12:01+00:00","author":{"@id":"https:\/\/www.xianwaizhiyin.net\/#\/schema\/person\/6605a70af752697df6b62f77c53298a3"},"breadcrumb":{"@id":"https:\/\/www.xianwaizhiyin.net\/?p=404#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.xianwaizhiyin.net\/?p=404"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.xianwaizhiyin.net\/?p=404#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.xianwaizhiyin.net\/"},{"@type":"ListItem","position":2,"name":"ffmpeg\u547d\u4ee4\u5206\u6790-acc"}]},{"@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\/404","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=404"}],"version-history":[{"count":2,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts\/404\/revisions"}],"predecessor-version":[{"id":2684,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=\/wp\/v2\/posts\/404\/revisions\/2684"}],"wp:attachment":[{"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xianwaizhiyin.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}