{"id":387991,"date":"2019-06-26T08:48:47","date_gmt":"2019-06-26T15:48:47","guid":{"rendered":"https:\/\/blog.webex.com\/uncategorized-ja\/%e3%83%aa%e3%82%a2%e3%83%ab%e3%82%bf%e3%82%a4%e3%83%a0-av1-%e3%82%b3%e3%83%bc%e3%83%87%e3%83%83%e3%82%af%e3%81%ab%e3%82%88%e3%82%8b-h-264-%e3%83%93%e3%83%87%e3%82%aa-%e3%82%b3%e3%83%a9%e3%83%9c\/"},"modified":"2019-06-26T08:48:47","modified_gmt":"2019-06-26T15:48:47","slug":"%e3%83%aa%e3%82%a2%e3%83%ab%e3%82%bf%e3%82%a4%e3%83%a0-av1-%e3%82%b3%e3%83%bc%e3%83%87%e3%83%83%e3%82%af%e3%81%ab%e3%82%88%e3%82%8b-h-264-%e3%83%93%e3%83%87%e3%82%aa-%e3%82%b3%e3%83%a9%e3%83%9c","status":"publish","type":"post","link":"https:\/\/blog.webex.com\/ja\/collaboration\/video-conferencing\/%e3%83%aa%e3%82%a2%e3%83%ab%e3%82%bf%e3%82%a4%e3%83%a0-av1-%e3%82%b3%e3%83%bc%e3%83%87%e3%83%83%e3%82%af%e3%81%ab%e3%82%88%e3%82%8b-h-264-%e3%83%93%e3%83%87%e3%82%aa-%e3%82%b3%e3%83%a9%e3%83%9c\/","title":{"rendered":"\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0 AV1 \u30b3\u30fc\u30c7\u30c3\u30af\u306b\u3088\u308b H.264 \u30d3\u30c7\u30aa \u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u4e00\u65b0"},"content":{"rendered":"

\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0 AV1 \u30b3\u30fc\u30c7\u30c3\u30af\u306b\u3088\u308b\u30d3\u30c7\u30aa \u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3<\/h2>\n

\u4eca\u65e5\u30cb\u30e5\u30fc\u30e8\u30fc\u30af\u306e Big Apple Video \u4f1a\u8b70\u3067\u3001Cisco \u306f\u30d3\u30c7\u30aa\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u9ad8\u54c1\u8cea\u306a AV1 <\/a>\u3092\u767a\u8868\u3057\u3001\u5e2f\u57df\u5e45\u3092\u524a\u6e1b\u3057\u3001\u6b21\u4e16\u4ee3\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53ef\u80fd\u306b\u3057\u3001HEVC aka H.265 \u306e\u5c0e\u5165\u3092\u4fc3\u9032\u3059\u308b\u7279\u8a31\u554f\u984c\u3092\u56de\u907f\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u904e\u53bb 16 \u5e74\u9593\u3067\u5927\u304d\u306a\u5909\u5316\u304c\u751f\u3044\u307e\u3057\u305f\u3002 \u5f53\u793e\u306b\u306f\u81ea\u52d5\u8eca\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u3001\u4eee\u60f3\u73fe\u5b9f\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30d3\u30c7\u30aa\u5727\u7e2e\u306b\u306f\u5f15\u304d\u7d9a\u304d H.264 \u3092\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f 2003 \u5e74\u306b\u5c0e\u5165\u3055\u308c\u3001\u73fe\u5728\u305d\u306e\u6642\u4ee3\u3092\u793a\u3059\u6280\u8853\u3067\u3059\u3002\u00a0<\/a> <\/a> \u30b8\u30e7\u30ca\u30b5\u30f3\u30fb\u30ed\u30ba\u30aa\u306e\u8a73\u7d30(\u3053\u3053\u3068\u3053\u3053)\u3068\u3057\u3066\u3001HEVC (aka H.265) \u3067\u306e\u3053\u308c\u3089\u306e\u554f\u984c\u3078\u306e\u5bfe\u5fdc\u306b\u306f\u3001\u8a8d\u3081\u3089\u308c\u306a\u3044\u7279\u8a31\u30b3\u30b9\u30c8\u3001\u30ea\u30b9\u30af\u3001\u6050\u308c\u304c\u3042\u308b\u3002<\/p>\n

AV1 \u306f\u3001Google\u3001Mozilla\u3001Cisco\u3001Microsoft\u3001Net of\u3001Amazon\u3001Intel \u306b\u3088\u308a 2015 \u5e74\u306b\u8a2d\u7acb\u3055\u308c\u305f\u30aa\u30fc\u30d7\u30f3 \u30e1\u30c7\u30a3\u30a2 (AOM)<\/a>\u306e\u63d0\u643a\u306e\u88fd\u54c1\u3067\u3042\u308a\u3001\u4eca\u65e5\u3067\u306f\u4e3b\u8981\u306a\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u4f01\u696d\u306e\u5927\u304d\u306a\u4e00\u90e8\u3092\u53d6\u308a\u8fbc\u3080\u3002\u00a0AV1 \u306e\u958b\u767a\u4e2d\u3001\u304a\u3088\u3073\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6280\u8853\u306e\u5bc4\u4e0e\u306b\u8ca2\u732e\u3059\u308b\u9593\u3001Cisco \u306f AOM \u30d1\u30fc\u30c8\u30ca\u30fc\u3068\u5354\u529b\u3057\u3066\u3001AV1 \u304c\u5c06\u6765\u306e\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u7279\u306b\u4f4e\u9045\u5ef6\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3001\u30a8\u30e9\u30fc\u5fa9\u5143\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

AV1 \u306f\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u5897\u3048\u7d9a\u3051\u308b\u554f\u984c\u306b\u53d6\u308a\u5354\u529b\u3057\u307e\u3059\u3002 \u9ad8\u54c1\u8cea\u304a\u3088\u3073\u65b0\u898f\u30b5\u30fc\u30d3\u30b9\u306b\u5bfe\u3059\u308b\u9700\u8981\u306f\u3001\u4eca\u307e\u3067\u4ee5\u4e0a\u306b\u62e1\u5927\u3057\u3001\u3088\u308a\u5927\u304d\u306a\u8ca0\u8377\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p><\/blockquote>\n

\u00a0<\/p>\n

\u6b21\u4e16\u4ee3\u30d3\u30c7\u30aa\u5727\u7e2e\u6280\u8853<\/h2>\n

\u30a8\u30a4\u30b8\u30ea\u30f3\u30b0H.264\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u65b0\u3057\u3044\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u63a1\u7528\u3059\u308b\u5fc5\u8981\u306f\u3001\u3053\u306e\u9700\u8981\u3092\u7ba1\u7406\u3059\u308b\u4e0a\u3067\u307e\u3059\u307e\u3059\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n

AV1 \u306f\u5358\u306a\u308b HEVC \u4ee3\u66ff\u54c1\u3060\u3051\u3067\u306a\u304f\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u62e1\u5927\u4e2d\u306e\u554f\u984c\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002 \u9ad8\u54c1\u8cea\u304a\u3088\u3073\u65b0\u898f\u30b5\u30fc\u30d3\u30b9\u306b\u5bfe\u3059\u308b\u9700\u8981\u306f\u3001\u4eca\u307e\u3067\u4ee5\u4e0a\u306b\u62e1\u5927\u3057\u3001\u3088\u308a\u5927\u304d\u306a\u8ca0\u8377\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002 \u30a8\u30a4\u30b8\u30f3\u30b0\u3055\u308c\u308bH.264\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u65b0\u3057\u3044\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u63a1\u7528\u3059\u308b\u5fc5\u8981\u306f\u3001\u3053\u306e\u9700\u8981\u3092\u7ba1\u7406\u3059\u308b\u4e0a\u3067\u307e\u3059\u307e\u3059\u4e0d\u53ef\u6b20\u3067\u3059\u3002 AV1 \u306b\u306f\u6700\u5148\u7aef\u306e\u5727\u7e2e\u6027\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u975e\u5e38\u306b\u5e83\u7bc4\u56f2\u306a\u30c4\u30fc\u30eb\u30bb\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002 AOM \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u8907\u96d1\u3055\u3092\u793a\u3059\u306e\u306f\u3001AV1 \u304c\u5b9f\u969b\u7684\u306b\u306f\u9045\u3059\u304e\u308b\u3068\u3044\u3046\u5fc3\u914d\u306b\u3064\u306a\u304c\u3063\u3066\u3044\u307e\u3059\u3002 \u305d\u306e\u5f8c\u3001AV1 \u5c0e\u5165\u6642\u306e\u901f\u5ea6\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3057\u305f\u304c\u3001\u8ab0\u3082\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306b\u8fd1\u4ed8\u3044\u3066\u3044\u307e\u3057\u305f\u304c\u3001AV1 \u3092\u4f7f\u7528\u3057\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0 \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306f\u53ef\u80fd\u3067\u3059\u304b?<\/p>\n

\u4eca\u65e5\u3067\u306f\u3001Big Apple \u30d3\u30c7\u30aa\u4f1a\u8b70\u3067\u306e\u8a71\u306f\u3001\u305d\u308c\u304c\u6b21\u3060\u3068\u793a\u3057\u307e\u3057\u305f\u3002 \u79c1\u306e\u540c\u50da\u306eS\u4f7f\u7528\u30ea\u30f3\u30fbShen\u3068\u79c1\u306f\u3001Webex\u30d3\u30c7\u30aa\u30df\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u306e\u30e9\u30a4\u30d6\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0 AV1 \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3068\u4f1d\u9001\u3092\u3001720p30 \u304a\u3088\u3073\u9ad8\u30d5\u30ec\u30fc\u30e0\u30ec\u30fc\u30c8\u306e\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u5171\u6709(1080p30)\u3067\u30c7\u30e2\u3092\u884c\u3044\u307e\u3057\u305f\u3002 \u00a0\u4e16\u754c\u6700\u521d! \u3053\u3053\u304b\u3089\u8a71\u3057\u5408\u3044\u3092\u898b\u308b\u4e8b\u304c\u53ef\u80fd\u3067\u3059\u3002\u00a0\u5c0e\u5165\u306b\u306f\u30d5\u30eb \u30af\u30e9\u30a6\u30c9 \u30e1\u30c7\u30a3\u30a2 \u30b9\u30bf\u30c3\u30af\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001AV1 \u5bfe\u5fdc\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30b5\u30fc\u30d0\u30fc\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u5c55\u958b\u3055\u308c\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u901a\u8a71\u30b7\u30b0\u30ca\u30ea\u30f3\u30b0\u3068\u56de\u5fa9\u529b\u306e\u3042\u308b\u30e1\u30c7\u30a3\u30a2\u4f1d\u9001\u3092\u5099\u3048\u308b\u3002<\/p>\n

\u3053\u306e\u3088\u3046\u306a\u901f\u5ea6\u3067\u6700\u9ad8\u306e\u30b9\u30d4\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002 \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306f\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306e\u554f\u984c\u3067\u3059\u3002 \u8907\u96d1\u3055\u3092\u57fa\u6e96\u306b\u3057\u305f\u5727\u7e2e\u96fb\u529b\u306f\u3001CPU \u4f7f\u7528\u7387\u3068\u901f\u5ea6\u306e\u73fe\u5b9f\u7684\u306a\u30ec\u30d9\u30eb\u3067\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002 \u5225\u306e\u8cea\u554f\u306f\u3001Cisco AV1 \u304c\u9ad8\u901f\u306b\u884c\u304f\u969b\u306b\u5927\u5e45\u306a\u5727\u7e2e\u306e\u5897\u52a0\u3092\u751f\u307f\u51fa\u3059\u304b\u3069\u3046\u304b\u3067\u3059\u3002<\/p>\n

\u7e70\u308a\u8fd4\u3057\u307e\u3059\u304c\u3001\u56de\u7b54\u306f \u306f\u3044\u3067\u3059\u3002 \u5f53\u793e\u306e\u30c7\u30e2\u3067\u306f\u3001\u30e9\u30a4\u30d6 720p30 \u30ab\u30e1\u30e9 \u30d3\u30c7\u30aa\u3092 H.264 \u306e\u5e2f\u57df\u5e45\u306e\u534a\u5206\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3067\u304d\u308b\u3060\u3051\u3067\u306a\u304f\u3001H.264 \u30a8\u30f3\u30b3\u30fc\u30c9 720p30 \u306e\u30d3\u30c3\u30c8\u30ec\u30fc\u30c8\u306e\u7d04 2\/3 \u3092\u4f7f\u7528\u3057\u3066\u30011080p30 \u3067\u9ad8\u30d5\u30ec\u30fc\u30e0 \u30ec\u30fc\u30c8\u5171\u6709\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3092\u884c\u3044\u307e\u3057\u305f\u3002<\/p>\n

\u3064\u307e\u308a\u3001\u30d3\u30c3\u30c8\u3092\u7bc0\u7d04\u3057\u306a\u304c\u3089\u3001\u5927\u5e45\u306b\u54c1\u8cea\u3092\u5411\u4e0a\u3067\u304d\u308b\u4e00\u65b9\u3067\u3001\u3059\u3079\u3066\u975e\u5e38\u306b\u4f7f\u3048\u308b CPU \u30a8\u30ea\u30a2\u3067\u884c\u3048\u307e\u3059\u3002 AV1 \u306e\u5b9f \u4e16\u754c<\/em> \u5727\u7e2e\/\u901f\u5ea6\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306f\u5b9f\u969b\u306b\u512a\u308c\u3066\u3044\u308b\u4e0a\u3001HEVC \u3088\u308a\u512a\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u7d50\u679c\u304c\u51fa\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n

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