{"id":123560,"date":"2024-03-24T11:45:19","date_gmt":"2024-03-24T02:45:19","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/golang-%e3%81%a7-ffmpeg-%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9f%e3%82%aa%e3%83%bc%e3%83%87%e3%82%a3%e3%82%aa%e3%81%ae%e3%83%9f%e3%82%ad%e3%82%b7%e3%83%b3%e3%82%b0%e3%81%a8%e6%8a%bd%e5%87%ba\/"},"modified":"2024-03-27T09:35:08","modified_gmt":"2024-03-27T00:35:08","slug":"golang-%e3%81%a7-ffmpeg-%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9f%e3%82%aa%e3%83%bc%e3%83%87%e3%82%a3%e3%82%aa%e3%81%ae%e3%83%9f%e3%82%ad%e3%82%b7%e3%83%b3%e3%82%b0%e3%81%a8%e6%8a%bd%e5%87%ba","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/golang-%e3%81%a7-ffmpeg-%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9f%e3%82%aa%e3%83%bc%e3%83%87%e3%82%a3%e3%82%aa%e3%81%ae%e3%83%9f%e3%82%ad%e3%82%b7%e3%83%b3%e3%82%b0%e3%81%a8%e6%8a%bd%e5%87%ba\/","title":{"rendered":"Golang \u3067 FFmpeg \u3092\u4f7f\u7528\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa"},"content":{"rendered":"<p>\u30aa\u30fc\u30c7\u30a3\u30aa\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\u3092Goland\u3067\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u3001FFmpeg \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002FFmpeg\u306f\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u30d3\u30c7\u30aa\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u308b\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u3001Go\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306bFFmpeg\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002FFmpeg\u30e9\u30a4\u30d6\u30e9\u30ea\u306fGitHub\u304b\u3089go get\u30b3\u30de\u30f3\u30c9\u3067\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>go get github.com\/giorgisio\/goav\/avcodec\r\ngo get github.com\/giorgisio\/goav\/avformat\r\ngo get github.com\/giorgisio\/goav\/avutil\r\n<\/code><\/pre>\n<p>\u7d9a\u3051\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">package<\/span> main\r\n<span class=\"hljs-keyword\">import<\/span> (\r\n<span class=\"hljs-string\">\"fmt\"<\/span>\r\n<span class=\"hljs-string\">\"github.com\/giorgisio\/goav\/avcodec\"<\/span>\r\n<span class=\"hljs-string\">\"github.com\/giorgisio\/goav\/avformat\"<\/span>\r\n<span class=\"hljs-string\">\"github.com\/giorgisio\/goav\/avutil\"<\/span>\r\n)\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\ninputFile1 := <span class=\"hljs-string\">\"input1.mp3\"<\/span>\r\ninputFile2 := <span class=\"hljs-string\">\"input2.mp3\"<\/span>\r\noutputFile := <span class=\"hljs-string\">\"output.mp3\"<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u6ce8\u518c\u6240\u6709\u7f16\u89e3\u7801\u5668\u548c\u6587\u4ef6\u683c\u5f0f<\/span>\r\navformat.AvRegisterAll()\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5f00\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6<\/span>\r\ninputCtx1 := avformat.AvformatAllocContext()\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvformatOpenInput(&amp;inputCtx1, inputFile1, <span class=\"hljs-literal\">nil<\/span>, <span class=\"hljs-literal\">nil<\/span>) != <span class=\"hljs-number\">0<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u6253\u5f00\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-keyword\">defer<\/span> avformat.AvformatCloseInput(inputCtx1)\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5f00\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6587\u4ef6<\/span>\r\ninputCtx2 := avformat.AvformatAllocContext()\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvformatOpenInput(&amp;inputCtx2, inputFile2, <span class=\"hljs-literal\">nil<\/span>, <span class=\"hljs-literal\">nil<\/span>) != <span class=\"hljs-number\">0<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u6253\u5f00\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6587\u4ef6\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-keyword\">defer<\/span> avformat.AvformatCloseInput(inputCtx2)\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\u7684\u97f3\u9891\u6d41<\/span>\r\naudioStreamIndex1 := <span class=\"hljs-number\">-1<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-type\">int<\/span>(inputCtx1.NbStreams()); i++ {\r\n<span class=\"hljs-keyword\">if<\/span> inputCtx1.Streams()[i].CodecParameters().CodecType() == avutil.AVMEDIA_TYPE_AUDIO {\r\naudioStreamIndex1 = i\r\n<span class=\"hljs-keyword\">break<\/span>\r\n}\r\n}\r\n<span class=\"hljs-keyword\">if<\/span> audioStreamIndex1 == <span class=\"hljs-number\">-1<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\u4e2d\u627e\u4e0d\u5230\u97f3\u9891\u6d41\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6587\u4ef6\u7684\u97f3\u9891\u6d41<\/span>\r\naudioStreamIndex2 := <span class=\"hljs-number\">-1<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-type\">int<\/span>(inputCtx2.NbStreams()); i++ {\r\n<span class=\"hljs-keyword\">if<\/span> inputCtx2.Streams()[i].CodecParameters().CodecType() == avutil.AVMEDIA_TYPE_AUDIO {\r\naudioStreamIndex2 = i\r\n<span class=\"hljs-keyword\">break<\/span>\r\n}\r\n}\r\n<span class=\"hljs-keyword\">if<\/span> audioStreamIndex2 == <span class=\"hljs-number\">-1<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6587\u4ef6\u4e2d\u627e\u4e0d\u5230\u97f3\u9891\u6d41\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8f93\u51fa\u6587\u4ef6\u7684AVFormatContext<\/span>\r\noutputCtx := avformat.AvformatAllocContext()\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvformatNewStream(outputCtx, <span class=\"hljs-literal\">nil<\/span>) == <span class=\"hljs-literal\">nil<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u521b\u5efa\u8f93\u51fa\u6587\u4ef6\u7684\u97f3\u9891\u6d41\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u590d\u5236\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\u7684\u97f3\u9891\u6d41\u5230\u8f93\u51fa\u6587\u4ef6\u7684\u97f3\u9891\u6d41<\/span>\r\noutputAudioStream := outputCtx.Streams()[<span class=\"hljs-number\">0<\/span>]\r\n<span class=\"hljs-keyword\">if<\/span> avcodec.AvCodecParametersCopy(outputAudioStream.CodecParameters(), inputCtx1.Streams()[audioStreamIndex1].CodecParameters()) &lt; <span class=\"hljs-number\">0<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u590d\u5236\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\u7684\u97f3\u9891\u6d41\u5230\u8f93\u51fa\u6587\u4ef6\u7684\u97f3\u9891\u6d41\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5f00\u8f93\u51fa\u6587\u4ef6<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvioOpen(&amp;outputCtx.Pb(), outputFile, avformat.AVIO_FLAG_WRITE) &lt; <span class=\"hljs-number\">0<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u6253\u5f00\u8f93\u51fa\u6587\u4ef6\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u5199\u5165\u8f93\u51fa\u6587\u4ef6\u7684\u5934\u90e8\u4fe1\u606f<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvformatWriteHeader(outputCtx, <span class=\"hljs-literal\">nil<\/span>) &lt; <span class=\"hljs-number\">0<\/span> {\r\nfmt.Println(<span class=\"hljs-string\">\"\u65e0\u6cd5\u5199\u5165\u8f93\u51fa\u6587\u4ef6\u7684\u5934\u90e8\u4fe1\u606f\"<\/span>)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u97f3\u9891\u5e27\u7528\u4e8e\u6df7\u97f3<\/span>\r\naudioFrame1 := avutil.AvFrameAlloc()\r\naudioFrame2 := avutil.AvFrameAlloc()\r\n<span class=\"hljs-comment\">\/\/ \u8fde\u7eed\u8bfb\u53d6\u4e24\u4e2a\u8f93\u5165\u6587\u4ef6\u7684\u97f3\u9891\u5e27\u5e76\u8fdb\u884c\u6df7\u97f3<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u4ece\u7b2c\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6\u8bfb\u53d6\u97f3\u9891\u5e27<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvReadFrame(inputCtx1, audioFrame1) &lt; <span class=\"hljs-number\">0<\/span> {\r\n<span class=\"hljs-keyword\">break<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u4ece\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6587\u4ef6\u8bfb\u53d6\u97f3\u9891\u5e27<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> avformat.AvReadFrame(inputCtx2, audioFrame2) &lt; <span class=\"hljs-number\">0<\/span> {\r\n<span class=\"hljs-keyword\">break<\/span>\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u6df7\u97f3<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u30aa\u30fc\u30c7\u30a3\u30aa\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\u3092Goland\u3067\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u3001FFmpeg \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002FFmpeg\u306f\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u30d3\u30c7\u30aa\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u308b\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30d5\u30ec\u30fc\u30e0 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-123560","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Golang \u3067 FFmpeg \u3092\u4f7f\u7528\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa - Blog - Silicon Cloud<\/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.silicloud.com\/ja\/blog\/golang-\u3067-ffmpeg-\u3092\u4f7f\u7528\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Golang \u3067 FFmpeg \u3092\u4f7f\u7528\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\" \/>\n<meta property=\"og:description\" content=\"\u30aa\u30fc\u30c7\u30a3\u30aa\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\u3092Goland\u3067\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u3001FFmpeg \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002FFmpeg\u306f\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u30d3\u30c7\u30aa\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u308b\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30d5\u30ec\u30fc\u30e0 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/golang-\u3067-ffmpeg-\u3092\u4f7f\u7528\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30df\u30ad\u30b7\u30f3\u30b0\u3068\u62bd\u51fa\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-24T02:45:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-27T00:35:08+00:00\" \/>\n<meta name=\"author\" content=\"\u7dbe\u4e43, \u4e00\u5e0c\" \/>\n<meta name=\"twitter:card\" 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