{"id":2937,"date":"2016-01-08T11:24:39","date_gmt":"2016-01-08T02:24:39","guid":{"rendered":"http:\/\/serenegiant.com\/blog\/?p=2937"},"modified":"2017-01-06T15:08:45","modified_gmt":"2017-01-06T06:08:45","slug":"web%e3%82%ab%e3%83%a1%e3%83%a9%e3%81%8b%e3%82%89h264%e5%8b%95%e7%94%bb%e3%82%92%e5%8f%96%e5%be%97%e3%81%97%e3%81%9f%e3%80%9c%e3%81%84%e3%80%9c%e3%81%9d%e3%81%ae%ef%bc%92%e3%80%9c","status":"publish","type":"post","link":"https:\/\/serenegiant.com\/blog\/?p=2937","title":{"rendered":"Web\u30ab\u30e1\u30e9\u304b\u3089h264\u52d5\u753b\u3092\u53d6\u5f97\u3057\u305f\u301c\u3044\u301c\u305d\u306e\uff12\u301c"},"content":{"rendered":"

\u524d\u56de\u306f\u5358\u306a\u308b\u524d\u632f\u308a\u3067\u4e2d\u8eab\u30b7\u30e7\u30dc\u3063\u3063\u3066\u601d\u3063\u305f\u4eba\u3082\u3044\u308b\u304b\u3082(\u6c57)
\n\u4eca\u56de\u304b\u3089\u306f\u304c\u3063\u3064\u308a\u4e2d\u8eab\u3060\u3088\u3049(^^)v \u3082\u3063\u3068\u3082\u4e00\u5ea6\u3082UVC\u306e\u898f\u683c\u66f8\u898b\u305f\u3053\u3068\u7121\u3044\u4eba\u3084UVC\u95a2\u9023\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3057\u305f\u3053\u3068\u306e\u306a\u3044\u4eba\u306b\u306f\u3055\u3063\u3071\u308a\u3060\u3063\u305f\u308a\u3057\u3066^^;<\/p>\n

UVC\u898f\u683c\u3067\u306e\u6620\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3064\u3044\u3066<\/h3>\n

UVC\u898f\u683c\u3067\u306eh.264\u306e\u53d6\u308a\u6271\u3044\u306b\u3064\u3044\u3066\u66f8\u304f\u524d\u306b\u3001UVC\u898f\u683c\u3067\u306e\u6620\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n

USB\u898f\u683c\u306b\u6e96\u62e0\u3057\u305f\u6a5f\u5668\u3067\u306f\u3001\u305d\u306e\u6a5f\u5668\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u6a5f\u80fd\u306b\u3064\u3044\u3066\u30c7\u30d0\u30a4\u30b9\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3068\u547c\u3070\u308c\u308b\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u306f\u5927\u304d\u304f\u5206\u3051\u3066\u6b21\u306e\uff13\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  1. USB\u6a5f\u5668\u5171\u901a\u306e\u6a19\u6e96\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf(Standard Descriptor)<\/li>\n
  2. \u30c7\u30d0\u30a4\u30b9\u30af\u30e9\u30b9\u56fa\u6709\u306e\u30af\u30e9\u30b9\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf(Class Specific Descriptor)<\/li>\n
  3. \u30d9\u30f3\u30c0\u30fc\u304c\u72ec\u81ea\u306b\u5b9a\u7fa9\u3057\u305f\u30d9\u30f3\u30c0\u30fc\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf(Vendor Specific Descriptor)<\/li>\n<\/ol>\n

    \u305d\u308c\u305e\u308c\u306e\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u306f\u66f4\u306a\u7d30\u304b\u304f\u5206\u985e\u3055\u308c\u308b\u306e\u3067\u3059\u304c\u3001UVC(=USB Video Class)\u6a5f\u5668\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u6620\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u30af\u30e9\u30b9\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf(Payload Format Descriptor)\u3068\u30d3\u30c7\u30aa\u30d5\u30ec\u30fc\u30e0\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf(Video Frame Descriptor)\u3092\u89e3\u6790\u3059\u308b\u3053\u3068\u3067\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n

    UVC1.5\u898f\u683c\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3067\u306f\u6b21\u306e11\u7a2e\u985e\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

    UVC1.5 Specification\uff1aTable3-16 Payload Format Descriptor\u304b\u3089<\/h5>\n
      \n
    1. Uncompressed Video<\/li>\n
    2. MJPEG Video<\/li>\n
    3. MPEG1-SS<\/li>\n
    4. MPEG2-PS<\/li>\n
    5. MPEG-2 TS<\/li>\n
    6. H.264<\/li>\n
    7. VP8(UVC1.1\u3067\u306f\u672a\u5b9a\u7fa9)<\/li>\n
    8. SMTPE VC1<\/li>\n
    9. MPEG-4 SL<\/li>\n
    10. DV<\/li>\n
    11. Vendor Defined<\/li>\n<\/ol>\n

      \u307e\u305f\u3001UVC1.5\u898f\u683c\u306e\u30d3\u30c7\u30aa\u30d5\u30ec\u30fc\u30e0\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3067\u306f\u6b21\u306e4\u7a2e\u985e\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

      UVC1.5 Specification\uff1aTable3-17 Defined Video Frame Descriptor Resources\u304b\u3089<\/h5>\n
        \n
      1. Uncompressed<\/li>\n
      2. MJPEG<\/li>\n
      3. Generic Frame-Based<\/li>\n
      4. H.264(UVC1.1\u3067\u306f\u672a\u5b9a\u7fa9)<\/li>\n
      5. VP8(UVC1.1\u3067\u306f\u672a\u5b9a\u7fa9)<\/li>\n<\/ol>\n

        \u305d\u308c\u305e\u308c\u306e\u5b9a\u7fa9\u306e\u8a73\u7d30\u306f\u7701\u7565\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u304c\u3001UVC\u898f\u683c\u306b\u5bfe\u5fdc\u3057\u305f\u307b\u307c\u3059\u3079\u3066\u306eWeb\u30ab\u30e1\u30e9\u3067\u975e\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8(Uncompressed Video)\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u591a\u304f\u306e\u5834\u5408MJPEG Video\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

        \u975e\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8(Uncompressed Video)\u3068\u3057\u3066\u306fYUY2, NV12, M420, I420\u306e4\u7a2e\u985e\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u975e\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u8a00\u3044\u306a\u304c\u3089\u5b9f\u969b\u306b\u306f\u30d4\u30af\u30bb\u30eb\u5358\u4f4d\u3067\u5727\u7e2e\u3055\u308c\u305f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306a\u306e\u3067\u3059\u3002\u3068\u306f\u8a00\u3046\u3082\u306e\u306e\u4f8b\u3048\u3070YUY2\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u5834\u5408\u306f1\u30d4\u30af\u30bb\u30eb\u3042\u305f\u308a2\u30d0\u30a4\u30c8\u5fc5\u8981\u3067\u89e3\u50cf\u5ea6\u304c1280×720\u3067\u306f1\u30d5\u30ec\u30fc\u30e0\u3042\u305f\u308a\u7d041.800\u30e1\u30ac\u30d0\u30a4\u30c8\u30011920×1080\u3060\u3068\u7d044\u30e1\u30ac\u30d0\u30a4\u30c8\u3092\u6bce\u30d5\u30ec\u30fc\u30e0\u8ee2\u9001\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3067\u3059\u306e\u3067\u89e3\u50cf\u5ea6\u306e\u5927\u304d\u306a\u6620\u50cf\u3092\u9ad8\u30d5\u30ec\u30fc\u30e0\u30ec\u30fc\u30c8\u3067\u8ee2\u9001\u3059\u308b\u306e\u306b\u306f\u5411\u304d\u307e\u305b\u3093\u3002
        \n\u305d\u3053\u3067\u4f7f\u308f\u308c\u308b\u306e\u304cMJPEG Video\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001\u30d5\u30ec\u30fc\u30e0\u6bce\u306bJPEG\u5727\u7e2e\u3057\u305f\u6620\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002\u8a2d\u5b9a\u306b\u3088\u308a\u307e\u3059\u304c\u5c11\u306a\u304f\u3068\u3082\u975e\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e1\/4\u301c1\/5\u7a0b\u5ea6\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306b\u306a\u308b\u306e\u3067\u3088\u308a\u9ad8\u89e3\u50cf\u5ea6\u306e\u6620\u50cf\u3092\u9ad8\u30d5\u30ec\u30fc\u30e0\u30ec\u30fc\u30c8\u3067\u8ee2\u9001\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n

        \u3068\u3053\u308d\u3067\u3001\u5148\u307b\u3069\u306e\uff12\u3064\u306e\u30ea\u30b9\u30c8\u306b\u306f\u300cH.264\u300d\u3068\u9805\u76ee\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u306a\u306e\u3067\u3053\u308c\u3060\u3051\u3092\u898b\u308b\u3068YUY2\u3084MJPEG\u3068\u540c\u3058\u3088\u3046\u306b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3068\u30d5\u30ec\u30fc\u30e0\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3092\u89e3\u6790\u3059\u308c\u3070H.264\u3067\u6620\u50cf\u53d6\u5f97\u3067\u304d\u308b\u3093\u3084\u306a\u3001\u3068\u601d\u3063\u3066\u3057\u307e\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u301c\u3057\u305d\u308c\u306f\u7518\u3044\u8003\u3048\u306a\u306e\u3067\u3059\u3002\u30c1\u30f3\u30b9\u30b3\u30a6\u306e\u3088\u3046\u306b\u7518\u3044\u306e\u3067\u3059\u3002<\/p>\n

        UVC\u898f\u683c\u3067\u306eH.264\u5bfe\u5fdc\u306b\u3064\u3044\u3066<\/h3>\n

        \u4f8b\u3048\u3070\u81ea\u5206\u3082\u6301\u3063\u3066\u3044\u308bLogicool C930e\u306fH.264\u306e\u30cf\u30fc\u30c9\u30a6\u30a8\u30a2\u5727\u7e2e\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002H.264\u3092\u4f7f\u3048\u3070MJPEG\u3088\u308a\u3082\u66f4\u306b\u6570\u5206\u306e1\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3067\u8ee2\u9001\u3067\u304d\u307e\u3059\u3002\u306a\u306e\u3067\u305c\u3072\u3068\u3082\u4f7f\u3044\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u3068\u3044\u3046\u304b\u305d\u306e\u305f\u3081\u306b\u308f\u3056\u308f\u3056C930e\u3092\u8cb7\u3063\u305f\u306e\u3067\u3057\u305f\u3002<\/p>\n

        \u3057\u304b\u3057\u3069\u301c\u3093\u306a\u306b\u9811\u5f35\u3063\u3066\u3082H.264\u7528\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3082\u30d5\u30ec\u30fc\u30e0\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3082\u898b\u3064\u304b\u308a\u307e\u305b\u3093(\u00b4\u30fb\u03c9\u30fb\uff40)<\/p>\n

        Logicool\u306e\u5c02\u7528\u30c9\u30e9\u30a4\u30d0\u3092\u5165\u308c\u305fPC\u3067\u3057\u304b\u30a2\u30af\u30bb\u30b9\u51fa\u6765\u306a\u3044\u60aa\u3044\u3084\u3064\u306a\u306e\u304b\u3001\u3044\u3048\u3044\u3048\u305d\u3093\u306a\u4e8b\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u306fUVC\u898f\u683c\u3067\u306eH.264\u5bfe\u5fdc\u65b9\u6cd5\u306b\u306f2\u7a2e\u985e\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n

          \n
        1. YUY2\u3084MJPEG\u3068\u540c\u69d8\u306b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3068\u30d5\u30ec\u30fc\u30e0\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3092\u4f7f\u3046\u65b9\u6cd5
          \n\tUVC1.5\u898f\u683c\u3067\u306eH.264\u5bfe\u5fdc\n\t<\/li>\n
        2. MJPEG\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u306b\u57cb\u3081\u8fbc\u3093\u3067\u8ee2\u9001\u3059\u308b\u65b9\u6cd5
          \n\tUVC1.1\u898f\u683c\u3067\u306eH.264\u5bfe\u5fdc\n\t<\/li>\n<\/ol>\n

          C930e\u306e\u5834\u5408\u306b\u306f2\u3064\u76ee\u306eMJPEG\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u306b\u57cb\u3081\u8fbc\u3093\u3067\u8ee2\u9001\u3059\u308b\u65b9\u6cd5\u3067\u306e\u307fH.264\u3067\u5727\u7e2e\u3055\u308c\u305f\u6620\u50cf\u3092\u53d6\u5f97\u3067\u304d\u308b\u306e\u3067\u3057\u305f\u3002\u3057\u304b\u3082\u3053\u306e\u65b9\u6cd5\u306f\u304b\u306a\u308a\u9762\u5012\u306a\u3053\u3068\u3092\u3057\u306a\u3044\u3068H.264\u3067\u5727\u7e2e\u3055\u308c\u305f\u6620\u50cf\u3092\u53d6\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3089\u306a\u3044\u306e\u3067\u3059(\u00b4\u30fb\u03c9\u30fb\uff40)<\/p>\n

          \u7d9a\u304f^^\/<\/p>\n","protected":false},"excerpt":{"rendered":"

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