{"id":3060,"date":"2015-07-16T14:59:27","date_gmt":"2015-07-16T05:59:27","guid":{"rendered":"http:\/\/aatljapan.wpengine.com\/?p=3060"},"modified":"2015-07-16T14:59:27","modified_gmt":"2015-07-16T05:59:27","slug":"video-conferencing","status":"publish","type":"post","link":"https:\/\/www.atlassian.com\/ja\/blog\/video-conferencing","title":{"rendered":"Last-n \u3092\u5229\u7528\u3057\u305f \u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0"},"content":{"rendered":"<p>\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0 \u306f\u8907\u96d1\u3067\u3059\u3002\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3068\u5171\u306b\u6570\u5341\u5e74\u306e\u9593\u9032\u6b69\u3092\u7d9a\u3051\u3001\u63a5\u7d9a\u6027\u306f\u304b\u306a\u308a\u5411\u4e0a\u3057\u624b\u8efd\u306a\u4fa1\u683c\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u305d\u308c\u3067\u3082\u307e\u3060\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0\u306f\u8907\u96d1\u3067\u3001\u4eca\u5f8c\u3082\u8907\u96d1\u3055\u306f\u306a\u304f\u306a\u3089\u306a\u3044\u3067\u3057\u3087\u3046\u3002\u305d\u306e\u4e2d\u3067\u3082\u5927\u304d\u306a\u554f\u984c\u306e 1 \u3064\u3067\u3042\u308b\u4f1a\u8b70\u53c2\u52a0\u8005\u6570\u306e\u62e1\u5f35\u6027\u3068\u3044\u3046\u8ab2\u984c\u306b\u53d6\u308a\u7d44\u3080\u305f\u3081\u306e\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u3053\u3053\u3067\u7d39\u4ecb\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u79c1\u305f\u3061\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u304c\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308a\u826f\u3044\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u306e\u306b\u3069\u306e\u3088\u3046\u306b\u5f79\u306b\u7acb\u3064\u306e\u304b\u306b\u3064\u3044\u3066\u3082\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306e\u3053\u3068\u3092\u3054\u5b58\u3058\u306a\u3044\u65b9\u306e\u305f\u3081\u81ea\u5df1\u7d39\u4ecb\u3092\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u30a2\u30c8\u30e9\u30b7\u30a2\u30f3\u306e\u65b0\u30e1\u30f3\u30d0\u30fc\u3001<a href=\"https:\/\/jitsi.org\/\" target=\"_blank\">Jitsi<\/a> \u30c1\u30fc\u30e0\u3067\u3059\u3002\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u304c\u5c02\u9580\u3067\u3059\u3002\u30a2\u30c8\u30e9\u30b7\u30a2\u30f3\u306e\u4e00\u54e1\u3068\u306a\u3063\u305f\u4eca\u3001\u30de\u30eb\u30c1\u30e6\u30fc\u30b6\u30fc\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0\u306b\u79c1\u305f\u3061\u306e\u5c02\u9580\u77e5\u8b58\u3092\u6295\u5165\u3057 HipChat\u3092\u3053\u308c\u307e\u3067\u4ee5\u4e0a\u306b\u3059\u3070\u3089\u3057\u3044\u3082\u306e\u3078\u3068\u6539\u826f\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0 \u5165\u9580<\/h2>\n<p>1 \u5bfe 1 \u306e\u30d3\u30c7\u30aa\u96fb\u8a71\u306f\u30e6\u30d3\u30ad\u30bf\u30b9\u3067\u3059\u3002\u3059\u306a\u308f\u3061\u3001\u81f3\u308b\u3068\u3053\u308d\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/en.wikipedia.org\/wiki\/Internet_Engineering_Task_Force\" target=\"_blank\">IETF<\/a> (\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u30bf\u30b9\u30af\u30d5\u30a9\u30fc\u30b9) \u304c\u9069\u5207\u306a <a href=\"https:\/\/en.wikipedia.org\/wiki\/NAT_traversal\" target=\"_blank\">Nat \u30c8\u30e9\u30d0\u30fc\u30b5\u30eb<\/a> (NAT \u8d8a\u3048) \u3092\u898b\u3044\u51fa\u3057\u305f\u5f8c\u30011 \u5bfe 1 \u901a\u8a71\u306e\u8a2d\u5b9a\u306f\u7c21\u5358\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u643a\u5e2f\u96fb\u8a71\u3001\u30bf\u30d6\u30ec\u30c3\u30c8\u3001\u3042\u3089\u3086\u308b\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3\u3067 1 \u5bfe 1 \u901a\u8a71\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u901a\u8a71\u306b\u3088\u308a\u591a\u304f\u306e\u53c2\u52a0\u8005\u3092\u8ffd\u52a0\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>3 \u65b9\u5411\u901a\u8a71\u306f\u307e\u3063\u305f\u304f\u30b5\u30fc\u30d0\u30fc\u30a4\u30f3\u30d5\u30e9\u304c\u306a\u304f\u3066\u3082\u30d5\u30eb\u30e1\u30c3\u30b7\u30e5\u578b\u30c8\u30dd\u30ed\u30b8\u30fc\u3092\u4f7f\u3046 (\u3059\u306a\u308f\u3061\u3001\u5168\u54e1\u3092\u5168\u54e1\u306b\u63a5\u7d9a\u3059\u308b) \u3053\u3068\u3067\u9054\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_3061\" aria-describedby=\"caption-attachment-3061\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/aatljapan.wpengine.com\/files\/full-mesh-3-e1437024964553.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3061 size-full\" src=\"http:\/\/aatljapan.wpengine.com\/files\/full-mesh-3-e1437024964553.png\" alt=\"\" width=\"600\" height=\"375\" \/><\/a><figcaption id=\"caption-attachment-3061\" class=\"wp-caption-text\">\u30d5\u30eb\u30e1\u30c3\u30b7\u30e5\u578b<\/figcaption><\/figure>\n<p>3 \u4eba\u3092\u8d85\u3048\u308b\u3068\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002<em>\u30d5\u30eb\u30e1\u30c3\u30b7\u30e5\u578b<\/em>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u62e1\u5f35\u3067\u304d\u306a\u3044\u3068\u8a00\u3063\u3066\u554f\u984c\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<figure id=\"attachment_3062\" aria-describedby=\"caption-attachment-3062\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/aatljapan.wpengine.com\/files\/full-mesh-6-e1437025112828.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3062 size-full\" src=\"http:\/\/aatljapan.wpengine.com\/files\/full-mesh-6-e1437025112828.png\" alt=\"\" width=\"600\" height=\"375\" \/><\/a><figcaption id=\"caption-attachment-3062\" class=\"wp-caption-text\">\u5b8c\u5168\u6df7\u4e71\u578b<\/figcaption><\/figure>\n<p>\u62e1\u5f35\u7bc4\u56f2\u304c 4 \u4eba\u3092\u8d85\u3048\u308b\u5834\u5408\u306f\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u5fc5\u8981\u3067\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u3092\u4e2d\u5fc3\u306b\u30b9\u30bf\u30fc\u578b\u30c8\u30dd\u30ed\u30b8\u30fc\u3067\u53c2\u52a0\u8005\u3068\u30b5\u30fc\u30d0\u30fc\u3092\u63a5\u7d9a\u3057\u307e\u3059\u3002\u4f7f\u7528\u3055\u308c\u308b\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u306f\u4e3b\u306b 2 \u7a2e\u985e\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u3042\u308a\u307e\u3059:<\/p>\n<h3>\u591a\u5730\u70b9\u5236\u5fa1\u88c5\u7f6e (MCU: Multipoint Control)<\/h3>\n<p>\u3053\u308c\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u3092\u51e6\u7406\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002\u901a\u5e38\u3001\u97f3\u58f0\u30df\u30c3\u30af\u30b9\u3001\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u6620\u50cf\u306e\u4f5c\u6210\u3001\u300c\u30df\u30c3\u30af\u30b9\u300d\u3055\u308c\u305f\u5358\u4e00\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u5404\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u306e\u9001\u4fe1\u3092\u884c\u3044\u307e\u3059\u3002 \u3053\u306e\u30e1\u30c7\u30a3\u30a2\u51e6\u7406\u304c\u539f\u56e0\u3067 CPU \u306e\u70b9\u3067\u306f\u3053\u306e\u88c5\u7f6e\u306f\u975e\u5e38\u306b\u9ad8\u984d\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u3069\u3061\u3089\u304b\u3068\u8a00\u3048\u3070\u30b7\u30f3\u30d7\u30eb\u306a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u9078\u629e\u7684\u8ee2\u9001\u88c5\u7f6e (SFU: Selective Forwarding Unit)<\/h3>\n<p>SFU \u306f\u30eb\u30fc\u30bf\u30fc\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3057\u3001\u30e1\u30c7\u30a3\u30a2\u51e6\u7406\u3092\u3059\u308b\u3053\u3068\u306a\u304f\u5358\u306b\u30d1\u30b1\u30c3\u30c8\u3092\u8ee2\u9001\u3057\u307e\u3059\u3002\u3053\u308c\u306f CPU \u52b9\u7387\u304c\u975e\u5e38\u306b\u9ad8\u3044\u5c0e\u5165\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u5fc5\u8981\u3068\u3055\u308c\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30ea\u30bd\u30fc\u30b9\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/aatljapan.wpengine.com\/files\/mcu-sfu-e1437025264122.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3063\" src=\"http:\/\/aatljapan.wpengine.com\/files\/mcu-sfu-e1437025264122.png\" alt=\"mcu-sfu\" width=\"600\" height=\"375\" \/><\/a><\/p>\n<p>\u6700\u3082\u5358\u7d14\u306a\u4e8b\u4f8b\u3067\u306f SFU \u306f\u4f55\u3082\u9078\u629e\u3059\u308b\u3053\u3068\u306a\u304f\u3059\u3079\u3066\u3092\u8ee2\u9001\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u8ee2\u9001\u3055\u308c\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u6570 (\u305d\u308c\u306b\u4f34\u3044\u5fc5\u8981\u3068\u306a\u308b\u5e2f\u57df\u5e45\u306e\u91cf) \u304c\u53c2\u52a0\u8005\u6570\u306e 2 \u4e57\u306b\u5f93\u3063\u3066\u5897\u52a0\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070 3 \u4eba\u306e\u53c2\u52a0\u8005\u306e\u5834\u5408\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u6570\u306f 3&#215;2=6\u300110 \u4eba\u306e\u5834\u5408\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u6570\u306f 10&#215;9=90 \u3068\u306a\u308a\u307e\u3059\u3002\u6700\u5927 10\uff5e15 \u4eba\u7a0b\u5ea6\u306e\u53c2\u52a0\u8005\u6570\u307e\u3067\u62e1\u5f35\u53ef\u80fd\u3067\u3059\u304c\u305d\u308c\u4ee5\u4e0a\u306b\u306a\u308b\u3068\u9014\u5207\u308c\u9014\u5207\u308c\u306b\u306a\u308a\u307e\u3059\u3002\u4f55\u3082\u9078\u629e\u3057\u306a\u3044\u5834\u5408\u306f SFU \u306f\u5358\u306a\u308b FU (\u8ee2\u9001\u88c5\u7f6e) \u3067\u3059\u3002<\/p>\n<h2>Last-n<\/h2>\n<p>\u79c1\u305f\u3061\u306e\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f <a href=\"https:\/\/jitsi.org\/Projects\/JitsiVideobridge\" target=\"_blank\">Jitsi Videobridge<\/a> \u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3059\u3002CPU \u52b9\u7387\u304c\u304b\u306a\u308a\u826f\u3044 SFU \u3067\u3059\u3002CPU \u30b5\u30a4\u30af\u30eb\u306e\u307b\u3068\u3093\u3069\u306f RTP (\u30e1\u30c7\u30a3\u30a2) \u30d1\u30b1\u30c3\u30c8\u306e\u6697\u53f7\u5316 \/ \u5fa9\u53f7\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u306e\u3067 CPU \u4f7f\u7528\u7387\u306f\u30d3\u30c3\u30c8\u30ec\u30fc\u30c8\u306b\u6bd4\u4f8b\u3057\u307e\u3059 (\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u300c<a href=\"https:\/\/jitsi.org\/Projects\/JitsiVideobridgePerformance\" target=\"_blank\">Jitsi Videobridge Performance Evaluation<\/a>\u300d\u53c2\u7167)\u3002\u5927\u898f\u6a21\u4f1a\u8b70\u306e\u5e2f\u57df\u5e45\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308c\u3070\u6df1\u523b\u306a CPU \u554f\u984c\u3082\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n<p>\u62e1\u5f35\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u79c1\u305f\u3061\u304c\u9078\u629e\u7684\u306b\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306e 1 \u3064\u306f\u3001\u79c1\u305f\u3061\u304c <em>last-n<\/em> \u3068\u547c\u3093\u3067\u3044\u308b\u3082\u306e\u3067\u3059\u3002\u53c2\u52a0\u8005\u6570 <em>n<\/em> \u306e\u30b5\u30d6\u30bb\u30c3\u30c8\u3092\u9078\u629e\u3059\u308b\u3068\u3044\u3046\u8003\u3048\u65b9\u3067\u3059\u3002<em>n<\/em> \u4eba\u306e\u53c2\u52a0\u8005\u306e\u30d3\u30c7\u30aa\u3092\u8868\u793a\u3057\u3066\u4ed6\u8005\u304b\u3089\u306e\u30d3\u30c7\u30aa\u3092\u505c\u6b62\u3057\u307e\u3059\u3002\u767a\u8a00\u8005\u306b\u5fdc\u3058\u3066\u8868\u793a\u3059\u308b\u53c2\u52a0\u8005\u306e\u30b5\u30d6\u30bb\u30c3\u30c8\u3092\u52d5\u7684\u306b\u81ea\u52d5\u8abf\u6574\u3057\u307e\u3059\u3002\u52b9\u7387\u826f\u304f\u76f4\u8fd1\u3067\u767a\u8a00\u3057\u305f <em>n<\/em> \u4eba\u306e\u30d3\u30c7\u30aa\u3060\u3051\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u62e1\u5f35\u554f\u984c\u306e\u89e3\u6c7a\u306b\u3069\u306e\u3088\u3046\u306b\u5f79\u7acb\u3064\u306e\u304b?<\/strong> \u8ee2\u9001\u3059\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u6570 (\u305d\u308c\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u901a\u4fe1\u91cf) \u306f \u76f4\u7dda\u7684\u306b\u5897\u52a0\u3057\u307e\u3059:<\/p>\n<p><a href=\"http:\/\/aatljapan.wpengine.com\/files\/lastn-e1437025555462.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3067\" src=\"http:\/\/aatljapan.wpengine.com\/files\/lastn-e1437025555462.png\" alt=\"lastn\" width=\"600\" height=\"413\" \/><\/a><\/p>\n<p><strong>\u305d\u308c\u306f\u3069\u3046\u3044\u3046\u610f\u5473\u304b?<\/strong> \u540c\u3058\u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u3092\u4f7f\u3046\u3053\u3068\u3067\u4ee5\u4e0b\u306e\u3069\u3061\u3089\u304b\u3092\u5b9f\u73fe\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059:<\/p>\n<ul>\n<li>\u4f1a\u8b70\u53c2\u52a0\u8005\u6570\u306e\u5897\u52a0<\/li>\n<li>\u4f1a\u8b70\u6570\u306e\u5897\u52a0<\/li>\n<\/ul>\n<p><strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3001UI\u3001UX \u3078\u306e\u5f71\u97ff\u306f?<\/strong><\/p>\n<ul>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u4f4e\u4e0b &#8211; \u53d7\u4fe1\u30b9\u30c8\u30ea\u30fc\u30e0\u6570\u306e\u4f4e\u4e0b<\/li>\n<li>CPU \u30ea\u30bd\u30fc\u30b9\u306e\u4f4e\u4e0b &#8211; \u30c7\u30b3\u30fc\u30c9\u3055\u308c\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u6570\u306e\u4f4e\u4e0b<\/li>\n<li>\u4e0d\u8981\u7269\u306e\u4f4e\u6e1b &#8211; UI \u306e\u30d3\u30c7\u30aa\u30a8\u30ec\u30e1\u30f3\u30c8\u6570\u306e\u4f4e\u4e0b<\/li>\n<li>\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u306e\u5fc5\u8981\u306a\u3057 &#8211; \u767a\u8a00\u8005\u304c\u3042\u308c\u3070\u767a\u8a00\u8005\u306e\u30d3\u30c7\u30aa\u3092\u81ea\u52d5\u7684\u306b\u8868\u793a<\/li>\n<\/ul>\n<p>\u307b\u3068\u3093\u3069\u306e\u4f1a\u8b70\u3067\u306f\u7a4d\u6975\u7684\u306b\u767a\u8a00\u3092\u3059\u308b\u306e\u306f\u6570\u540d\u306b\u904e\u304e\u307e\u305b\u3093\u3002\u3053\u306e\u7279\u5fb4\u3092\u5229\u7528\u3057\u3066 <em>last-n<\/em> \u3092\u63a1\u7528\u3057\u3064\u3064\u5168\u54e1\u306e\u53c2\u52a0\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>\n<p><em>last-n<\/em> \u306e\u96e3\u70b9\u306e 1 \u3064\u306f\u8868\u793a\u3059\u308b\u53c2\u52a0\u8005\u3092\u898b\u6975\u3081\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306f\u300cDominant Speaker Identification\u300d(\u4e3b\u8981\u306a\u767a\u8a00\u8005\u306e\u7279\u5b9a) \u3068\u547c\u3070\u308c\u308b\u96e3\u89e3\u306a\u554f\u984c\u3067\u3059\u3002\u79c1\u305f\u3061\u306f\u97f3\u58f0\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u30c7\u30b3\u30fc\u30c9\u305b\u305a\u306b SFU \u4e0a\u3067\u305d\u306e\u767a\u8a00\u8005\u3092\u7279\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3053\u306e\u554f\u984c\u306f\u3055\u3089\u306b\u8907\u96d1\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><em>last-n<\/em> \u306b\u3064\u3044\u3066\u306f\u79c1\u305f\u3061\u304c\u6700\u8fd1\u767a\u8868\u3057\u305f\u8ad6\u6587\u306b\u8a73\u7d30\u304c\u8a18\u3055\u308c\u3066\u3044\u307e\u3059: <em>Last N: \u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u4f1a\u8b70\u306b\u304a\u3051\u308b\u30d3\u30c7\u30aa\u8ee2\u9001\u306e\u95a2\u9023\u6027\u9078\u629e (\u539f\u984c: <a href=\"https:\/\/jitsi.org\/publications\/nossdav2015lastn.pdf\" target=\"_blank\">Last N: Relevance-Based Selectivity for Forwarding Video in Multimedia Conferences<\/a>)<\/em><\/p>\n<p>\u5b9f\u969b\u306e <em>last-n<\/em> \u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3057\u305f\u3044\u65b9\u306f\u3001\u5b9f\u9a13\u8a55\u4fa1\u7528\u30a4\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u3054\u89a7\u304f\u3060\u3055\u3044:<\/p>\n<p><a href=\"http:\/\/beta.meet.jit.si\/\" target=\"_blank\">http:\/\/beta.meet.jit.si\/<\/a><\/p>\n<p>\u5b9f\u9a13\u8a55\u4fa1\u7528\u30a4\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u306f set <em>n=5<\/em> \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u306e\u3067 <em>last-n<\/em> \u306e\u52b9\u679c\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u6700\u4f4e 7 \u4eba\u304c\u5fc5\u8981\u3068\u306a\u308b\u3053\u3068\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u3053\u308c\u306f\u5358\u306a\u308b\u8a66\u9a13\u74b0\u5883\u3067\u3042\u308a\u5b89\u5b9a\u6027\u306b\u304b\u3051\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u70b9\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u4ee5\u4e0a\u304c Jitsi \u30c1\u30fc\u30e0\u304c\u53d6\u308a\u7d44\u3093\u3067\u3044\u308b\u5185\u5bb9\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u3067\u3059\u3002\u79c1\u305f\u3061\u306f\u30a2\u30c8\u30e9\u30b7\u30a2\u30f3\u306e\u4e00\u54e1\u3068\u306a\u308a\u80f8\u304c\u9ad8\u9cf4\u3063\u3066\u3044\u307e\u3059\u3002\u4e21\u30c1\u30fc\u30e0\u304c\u5354\u529b\u3059\u308b\u3053\u3068\u3067\u3053\u308c\u304b\u3089\u53ef\u80fd\u3068\u306a\u308b\u767a\u5c55\u3092\u3068\u3066\u3082\u697d\u3057\u307f\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><small>*\u672c\u30d6\u30ed\u30b0\u306f Atlassian Developers \u306e\u7ffb\u8a33\u3067\u3059\u3002\u672c\u6587\u4e2d\u306e\u65e5\u6642\u306a\u3069\u306f\u6295\u7a3f\u5f53\u6642\u306e\u3082\u306e\u3067\u3059\u306e\u3067\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u3002<br \/>\n*\u539f\u6587 : 2015 \u5e74 7 \u6708 15 \u65e5\u6295\u7a3f \"<a href=\"https:\/\/developer.atlassian.com\/blog\/2015\/07\/video-conferencing\/\" target=\"_blank\">Video conferencing with last-n<\/a>\"<\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0 \u306f\u8907\u96d1\u3067\u3059\u3002\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3068\u5171\u306b\u6570\u5341\u5e74\u306e\u9593\u9032\u6b69\u3092\u7d9a\u3051\u3001\u63a5\u7d9a\u6027\u306f\u304b\u306a\u308a\u5411\u4e0a\u3057\u624b\u8efd\u306a\u4fa1\u683c\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u305d\u308c\u3067\u3082\u307e\u3060\u30d3\u30c7\u30aa\u4f1a\u8b70\u30b7\u30b9\u30c6\u30e0&hellip;<\/p>\n","protected":false},"author":426,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"bitbucket_subtitle":"","footnotes":""},"categories":[1],"tags":[],"coauthors":[],"class_list":["post-3060","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/3060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/users\/426"}],"replies":[{"embeddable":true,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=3060"}],"version-history":[{"count":0,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/3060\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=3060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=3060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=3060"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.atlassian.com\/ja\/blog\/wp-json\/wp\/v2\/coauthors?post=3060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}