{"id":478065,"date":"2023-08-09T09:26:45","date_gmt":"2023-08-09T09:26:45","guid":{"rendered":""},"modified":"2023-09-05T11:16:00","modified_gmt":"2023-09-05T11:16:00","slug":"mp4","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/mp4\/","title":{"rendered":"MP4"},"content":{"rendered":"<p>MP4 \u306f MPEG-4 Part 14 \u306e\u7565\u3067\u3001\u30d3\u30c7\u30aa\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u305d\u306e\u4ed6\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30b8\u30bf\u30eb \u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30ca\u5f62\u5f0f\u3067\u3059\u30022003 \u5e74\u306b Motion Picture Experts Group (MPEG) \u3068\u56fd\u969b\u6a19\u6e96\u5316\u6a5f\u69cb (ISO) \u306b\u3088\u3063\u3066\u521d\u3081\u3066\u6a19\u6e96\u5316\u3055\u308c\u307e\u3057\u305f\u3002MP4 \u306f\u3001\u9ad8\u54c1\u8cea\u306e\u518d\u751f\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u30d5\u30a1\u30a4\u30eb\u3092\u52b9\u7387\u7684\u306b\u5727\u7e2e\u3059\u308b\u305f\u3081\u3001\u4e16\u754c\u4e2d\u3067\u6700\u3082\u4eba\u6c17\u306e\u3042\u308b\u30d3\u30c7\u30aa\u5f62\u5f0f\u306e 1 \u3064\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u305d\u306e\u6c4e\u7528\u6027\u3068\u5e45\u5e83\u3044\u4e92\u63db\u6027\u306b\u3088\u308a\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001\u30d3\u30c7\u30aa\u5171\u6709\u3001\u30e2\u30d0\u30a4\u30eb \u30c7\u30d0\u30a4\u30b9\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u4e0d\u53ef\u6b20\u306a\u5f62\u5f0f\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>MP4\u306e\u8d77\u6e90\u3068\u305d\u306e\u6700\u521d\u306e\u8a00\u53ca\u306e\u6b74\u53f2<\/h2>\n<p>MP4 \u306e\u958b\u767a\u306f\u3001\u3088\u308a\u9ad8\u5ea6\u3067\u52b9\u7387\u7684\u306a\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30ca\u5f62\u5f0f\u306b\u5bfe\u3059\u308b\u30cb\u30fc\u30ba\u304c\u9ad8\u307e\u3063\u305f 1990 \u5e74\u4ee3\u5f8c\u534a\u306b\u59cb\u307e\u308a\u307e\u3057\u305f\u3002MP4 \u4ee5\u524d\u306f\u3001AVI \u3084 MPEG-2 \u306a\u3069\u306e\u5f62\u5f0f\u304c\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30d5\u30a1\u30a4\u30eb \u30b5\u30a4\u30ba\u3068\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u6a5f\u80fd\u306e\u70b9\u3067\u5236\u9650\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>1998 \u5e74\u3001MPEG \u59d4\u54e1\u4f1a\u306f\u3001\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u5727\u7e2e\u3068\u67d4\u8edf\u6027\u306e\u5411\u4e0a\u3092\u76ee\u7684\u3068\u3057\u305f\u65b0\u3057\u3044\u6a19\u6e96\u3067\u3042\u308b MPEG-4 \u306e\u958b\u767a\u3092\u958b\u59cb\u3057\u307e\u3057\u305f\u3002MP4 \u306f\u3001\u4ee5\u524d\u306e\u5f62\u5f0f\u306e\u6b20\u70b9\u3092\u88dc\u3046\u305f\u3081\u306b MPEG-4 \u30b9\u30a4\u30fc\u30c8\u306e\u4e00\u90e8\u3068\u3057\u3066\u8a2d\u8a08\u3055\u308c\u307e\u3057\u305f\u3002MP4 \u304c\u521d\u3081\u3066\u8a00\u53ca\u3055\u308c\u305f\u306e\u306f\u30012001 \u5e74\u306b\u56fd\u969b\u6a19\u6e96\u5316\u6a5f\u69cb\u306b\u3088\u3063\u3066\u516c\u958b\u3055\u308c\u305f\u3001MPEG-4 Part 14 \u5f62\u5f0f\u306e\u6280\u8853\u4ed5\u69d8\u3092\u8a73\u8ff0\u3057\u305f\u6587\u66f8\u3067\u3057\u305f\u3002<\/p>\n<h2>MP4\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>MP4 \u306f\u3001\u3082\u3068\u3082\u3068 Apple \u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u305f QuickTime \u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u306b\u57fa\u3065\u3044\u3066\u69cb\u7bc9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5f62\u5f0f\u306f\u3001H.264 (AVC) \u3084 AAC \u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u54c1\u8cea\u3092\u5927\u5e45\u306b\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u30d3\u30c7\u30aa\u3068\u30aa\u30fc\u30c7\u30a3\u30aa\u3092\u52b9\u7387\u7684\u306b\u5727\u7e2e\u3067\u304d\u308b\u305f\u3081\u3001\u4eba\u6c17\u3092\u535a\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30aa\u30f3\u30e9\u30a4\u30f3 \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3068\u30ed\u30fc\u30ab\u30eb \u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u4e21\u65b9\u306b\u6700\u9069\u3067\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001MP4 \u30d5\u30a1\u30a4\u30eb\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7d4c\u7531\u3067\u7c21\u5358\u306b\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3067\u304d\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30d0\u30a4\u30b9\u3068\u4e92\u63db\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5e45\u5e83\u3044\u30e6\u30fc\u30b6\u30fc\u304c\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u5b57\u5e55\u3001\u30c1\u30e3\u30d7\u30bf\u30fc \u30de\u30fc\u30ab\u30fc\u3092\u542b\u3081\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc \u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u3055\u3089\u306b\u5411\u4e0a\u3057\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u5185\u306e\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u3082\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>MP4\u306e\u5185\u90e8\u69cb\u9020: MP4\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>MP4 \u30d5\u30a1\u30a4\u30eb\u306f\u3001\u30d3\u30c7\u30aa\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u5b57\u5e55\u30c8\u30e9\u30c3\u30af\u306a\u3069\u8907\u6570\u306e\u30c7\u30fc\u30bf \u30b9\u30c8\u30ea\u30fc\u30e0\u3067\u69cb\u6210\u3055\u308c\u3001\u3059\u3079\u3066 1 \u3064\u306e\u30b3\u30f3\u30c6\u30ca\u30fc\u5185\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u30fc\u5f62\u5f0f\u306b\u3088\u308a\u3001\u3053\u308c\u3089\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u540c\u671f\u3057\u3066\u518d\u751f\u3067\u304d\u308b\u305f\u3081\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u3068\u30d3\u30c7\u30aa\u3092\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u7d71\u5408\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>MP4 \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u90e8\u69cb\u9020\u306f\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u5185\u306e\u30c7\u30fc\u30bf\u306e\u57fa\u672c\u7684\u306a\u69cb\u6210\u8981\u7d20\u3067\u3042\u308b\u30a2\u30c8\u30e0\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30a2\u30c8\u30e0\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>ftyp (\u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7\u30dc\u30c3\u30af\u30b9):<\/strong> \u30d5\u30a1\u30a4\u30eb\u306e\u7a2e\u985e\u3068\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u8b58\u5225\u3057\u307e\u3059\u3002<\/li>\n<li><strong>moov\uff08\u30e0\u30fc\u30d3\u30fc\u30dc\u30c3\u30af\u30b9\uff09\uff1a<\/strong> \u30e1\u30c7\u30a3\u30a2\u306b\u95a2\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3068\u91cd\u8981\u306a\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<li><strong>mdat (\u30e1\u30c7\u30a3\u30a2\u30c7\u30fc\u30bf\u30dc\u30c3\u30af\u30b9):<\/strong> \u30d3\u30c7\u30aa \u30d5\u30ec\u30fc\u30e0\u3084\u30aa\u30fc\u30c7\u30a3\u30aa \u30d5\u30ec\u30fc\u30e0\u306a\u3069\u306e\u5b9f\u969b\u306e\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n<li><strong>trak\uff08\u30c8\u30e9\u30c3\u30af\u30dc\u30c3\u30af\u30b9\uff09\uff1a<\/strong> \u500b\u3005\u306e\u30e1\u30c7\u30a3\u30a2 \u30c8\u30e9\u30c3\u30af (\u30d3\u30c7\u30aa\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u306a\u3069) \u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002<\/li>\n<li><strong>mdia\uff08\u30e1\u30c7\u30a3\u30a2\u30dc\u30c3\u30af\u30b9\uff09:<\/strong> \u30b3\u30fc\u30c7\u30c3\u30af\u3084\u30bf\u30a4\u30df\u30f3\u30b0\u306a\u3069\u306e\u30e1\u30c7\u30a3\u30a2\u56fa\u6709\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>MP4 \u30d5\u30a1\u30a4\u30eb\u3092\u518d\u751f\u3059\u308b\u5834\u5408\u3001\u30d7\u30ec\u30fc\u30e4\u30fc\u306f\u307e\u305a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b moov \u30a2\u30c8\u30e0\u3092\u8aad\u307f\u53d6\u308a\u307e\u3059\u3002mdat \u30a2\u30c8\u30e0\u306b\u306f\u5727\u7e2e\u3055\u308c\u305f\u30e1\u30c7\u30a3\u30a2 \u30c7\u30fc\u30bf\u81ea\u4f53\u304c\u542b\u307e\u308c\u3001trak \u30a2\u30c8\u30e0\u306b\u306f\u5404\u30e1\u30c7\u30a3\u30a2 \u30c8\u30e9\u30c3\u30af\u306e\u7279\u6027\u304c\u8a18\u8ff0\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>MP4\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n<p>MP4 \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u6570\u591a\u304f\u306e\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u308b\u305f\u3081\u3001\u63a8\u5968\u3055\u308c\u308b\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30ca\u5f62\u5f0f\u3068\u3057\u3066\u969b\u7acb\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u9ad8\u3044\u5727\u7e2e\u52b9\u7387:<\/strong> MP4 \u306f H.264 \u306a\u3069\u306e\u9ad8\u5ea6\u306a\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3001\u54c1\u8cea\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u30e1\u30c7\u30a3\u30a2 \u30d5\u30a1\u30a4\u30eb\u3092\u5727\u7e2e\u3059\u308b\u305f\u3081\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u914d\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u591a\u7528\u9014\u6027:<\/strong> \u3053\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30aa\u30fc\u30c7\u30a3\u30aa\u3001\u30d3\u30c7\u30aa\u3001\u5b57\u5e55\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u4f5c\u6210\u3068\u6d88\u8cbb\u306e\u67d4\u8edf\u6027\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u30b5\u30dd\u30fc\u30c8:<\/strong> MP4 \u30d5\u30a1\u30a4\u30eb\u306b\u306f\u3001\u30bf\u30a4\u30c8\u30eb\u3001\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u3001\u8457\u4f5c\u6a29\u60c5\u5831\u306a\u3069\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u57cb\u3081\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc \u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3001\u30e1\u30c7\u30a3\u30a2\u306e\u6574\u7406\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u6a5f\u80fd:<\/strong> \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7d4c\u7531\u3067\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3067\u304d\u308b\u305f\u3081\u3001MP4 \u306f\u30aa\u30f3\u30e9\u30a4\u30f3 \u30d3\u30c7\u30aa \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3084\u30e9\u30a4\u30d6\u653e\u9001\u306b\u6700\u9069\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u4e92\u63db\u6027:<\/strong> MP4 \u30d5\u30a1\u30a4\u30eb\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30bf\u30d6\u30ec\u30c3\u30c8\u3001\u30b2\u30fc\u30e0\u6a5f\u3001\u30b9\u30de\u30fc\u30c8\u30c6\u30ec\u30d3\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30d0\u30a4\u30b9\u3067\u518d\u751f\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>MP4\u306e\u7a2e\u985e<\/h2>\n<p>MP4 \u306b\u306f\u3001\u4f7f\u7528\u3055\u308c\u308b\u30b3\u30fc\u30c7\u30c3\u30af\u3068\u6a5f\u80fd\u306b\u5fdc\u3058\u3066\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u4e00\u822c\u7684\u306a MP4 \u306e\u7a2e\u985e\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u30bf\u30a4\u30d7<\/strong><\/th>\n<th><strong>\u8aac\u660e<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H.264 \u4ed8\u304d MP4<\/td>\n<td>\u6700\u3082\u4e00\u822c\u7684\u306a\u30bf\u30a4\u30d7\u3002H.264 \u30d3\u30c7\u30aa \u30b3\u30fc\u30c7\u30c3\u30af\u3068 AAC \u30aa\u30fc\u30c7\u30a3\u30aa \u30b3\u30fc\u30c7\u30c3\u30af\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>HEVC \u4ed8\u304d MP4<\/td>\n<td>\u9ad8\u52b9\u7387\u30d3\u30c7\u30aa\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0 (HEVC) \u30b3\u30fc\u30c7\u30c3\u30af\u3092\u63a1\u7528\u3057\u3001\u5727\u7e2e\u52b9\u7387\u304c\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>MPEG-2 \u3092\u4f7f\u7528\u3057\u305f MP4<\/td>\n<td>\u5727\u7e2e\u80fd\u529b\u304c\u4f4e\u3044\u305f\u3081\u3042\u307e\u308a\u666e\u53ca\u3057\u3066\u3044\u306a\u3044\u3001\u53e4\u3044 MPEG-2 \u30d3\u30c7\u30aa \u30b3\u30fc\u30c7\u30c3\u30af\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u5b57\u5e55\u4ed8\u304dMP4<\/td>\n<td>\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u306e\u305f\u3081\u306b\u57cb\u3081\u8fbc\u307f\u5b57\u5e55\u307e\u305f\u306f\u30af\u30ed\u30fc\u30ba\u30c9 \u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>MP4\u306e\u4f7f\u3044\u65b9\u3001\u4f7f\u7528\u4e0a\u306e\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n<p>MP4 \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30c7\u30aa\u5171\u6709:<\/strong> YouTube \u3084 Vimeo \u306a\u3069\u306e\u4eba\u6c17\u306e\u30d3\u30c7\u30aa\u5171\u6709\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u306f\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u6a5f\u80fd\u3068\u5e45\u5e83\u3044\u4e92\u63db\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u914d\u4fe1\u306b\u306f\u4e3b\u306b MP4 \u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d3\u30c7\u30aa\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9:<\/strong> Netflix \u3084 Amazon Prime Video \u306a\u3069\u306e\u4e3b\u8981\u306a\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0 \u30b5\u30fc\u30d3\u30b9\u306f\u3001\u4f55\u767e\u4e07\u4eba\u3082\u306e\u52a0\u5165\u8005\u306b\u9ad8\u54c1\u8cea\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u914d\u4fe1\u3059\u308b\u305f\u3081\u306b MP4 \u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\uff1a<\/strong> MP4 \u306f\u3001\u54c1\u8cea\u3068\u30d5\u30a1\u30a4\u30eb \u30b5\u30a4\u30ba\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u53d6\u308c\u3066\u304a\u308a\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3084\u30bf\u30d6\u30ec\u30c3\u30c8\u3067\u30b9\u30e0\u30fc\u30ba\u306b\u518d\u751f\u3067\u304d\u308b\u305f\u3081\u3001\u30e2\u30d0\u30a4\u30eb \u30c7\u30d0\u30a4\u30b9\u306b\u9069\u3057\u305f\u5f62\u5f0f\u3067\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u305d\u306e\u5229\u70b9\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30e6\u30fc\u30b6\u30fc\u306f MP4 \u30d5\u30a1\u30a4\u30eb\u306b\u95a2\u3057\u3066\u6b21\u306e\u3088\u3046\u306a\u554f\u984c\u306b\u906d\u9047\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u518d\u751f\u306e\u554f\u984c:<\/strong> \u4e00\u90e8\u306e\u30e1\u30c7\u30a3\u30a2 \u30d7\u30ec\u30fc\u30e4\u30fc\u3067\u306f\u3001\u30b3\u30fc\u30c7\u30c3\u30af\u306e\u4e92\u63db\u6027\u306e\u554f\u984c\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e MP4 \u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30b3\u30fc\u30c9\u306b\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8150\u6557\uff1a<\/strong> MP4 \u30d5\u30a1\u30a4\u30eb\u304c\u7834\u640d\u3059\u308b\u3068\u3001\u518d\u751f\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u308a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3055\u307e\u3056\u307e\u306a\u89e3\u6c7a\u7b56\u3092\u63a1\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u30b3\u30fc\u30c7\u30c3\u30af\u30d1\u30c3\u30af:<\/strong> \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306b\u30b3\u30fc\u30c7\u30c3\u30af \u30d1\u30c3\u30af\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3068\u3001\u30e1\u30c7\u30a3\u30a2 \u30d7\u30ec\u30fc\u30e4\u30fc\u306e\u4e92\u63db\u6027\u304c\u5411\u4e0a\u3057\u3001\u518d\u751f\u304c\u6539\u5584\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4fee\u5fa9\u30c4\u30fc\u30eb:<\/strong> \u5c02\u7528\u306e MP4 \u4fee\u5fa9\u30c4\u30fc\u30eb\u306f\u3001\u7834\u640d\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u4fee\u5fa9\u3057\u3001\u5931\u308f\u308c\u305f\u30c7\u30fc\u30bf\u3092\u56de\u5fa9\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<p>MP4 \u3068\u4ed6\u306e\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30b3\u30f3\u30c6\u30ca\u5f62\u5f0f\u3068\u306e\u6bd4\u8f03\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u7279\u5fb4<\/strong><\/th>\n<th><strong>MP4<\/strong><\/th>\n<th><strong>\u52d5\u753b<\/strong><\/th>\n<th><strong>\u52d5\u753b<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30d3\u30c7\u30aa\u30b3\u30fc\u30c7\u30c3\u30af\u306e\u30b5\u30dd\u30fc\u30c8<\/td>\n<td>H.264\u3001HEVC\u3001MPEG-2<\/td>\n<td>\u69d8\u3005\u306a<\/td>\n<td>\u69d8\u3005\u306a<\/td>\n<\/tr>\n<tr>\n<td>\u30aa\u30fc\u30c7\u30a3\u30aa\u30b3\u30fc\u30c7\u30c3\u30af\u306e\u30b5\u30dd\u30fc\u30c8<\/td>\n<td>MP3\u3001AAC\u3001MP3<\/td>\n<td>\u69d8\u3005\u306a<\/td>\n<td>\u69d8\u3005\u306a<\/td>\n<\/tr>\n<tr>\n<td>\u5b57\u5e55\u30b5\u30dd\u30fc\u30c8<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u6a5f\u80fd<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u9650\u5b9a<\/td>\n<td>\u9650\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u52b9\u7387<\/td>\n<td>\u9ad8\u3044<\/td>\n<td>\u4e2d\u304f\u3089\u3044<\/td>\n<td>\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u30b5\u30dd\u30fc\u30c8<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u9650\u5b9a<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>MP4\u306b\u95a2\u3059\u308b\u4eca\u5f8c\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u6280\u8853\u304c\u9032\u6b69\u3059\u308b\u306b\u3064\u308c\u3066\u3001MP4 \u306e\u5c06\u6765\u306f\u3055\u3089\u306b\u6539\u5584\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6f5c\u5728\u7684\u306a\u958b\u767a\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u62e1\u5f35\u30b3\u30fc\u30c7\u30c3\u30af:<\/strong> \u30d3\u30c7\u30aa\u304a\u3088\u3073\u30aa\u30fc\u30c7\u30a3\u30aa \u30b3\u30fc\u30c7\u30c3\u30af\u306e\u9032\u6b69\u306b\u3088\u308a\u3001\u5727\u7e2e\u52b9\u7387\u304c\u3055\u3089\u306b\u9ad8\u307e\u308a\u3001\u9ad8\u54c1\u8cea\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u30d5\u30a1\u30a4\u30eb \u30b5\u30a4\u30ba\u304c\u524a\u6e1b\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>360\u5ea6\u30d3\u30c7\u30aa\u306e\u30b5\u30dd\u30fc\u30c8:<\/strong> MP4 \u306f\u3001\u9032\u5316\u3059\u308b\u30e1\u30c7\u30a3\u30a2\u6d88\u8cbb\u7fd2\u6163\u306b\u5bfe\u5fdc\u3057\u3001\u4eee\u60f3\u73fe\u5b9f\u3084 360 \u5ea6\u30d3\u30c7\u30aa\u306a\u3069\u306e\u65b0\u305f\u306a\u30c8\u30ec\u30f3\u30c9\u306b\u9069\u5fdc\u3059\u308b\u3068\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u6a5f\u80fd:<\/strong> MP4 \u306e\u5c06\u6765\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u8981\u7d20\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3001\u3088\u308a\u9b45\u529b\u7684\u306a\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2 \u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u5b9f\u73fe\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3092MP4\u3067\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u307e\u305f\u306fMP4\u3068\u95a2\u9023\u4ed8\u3051\u308b\u65b9\u6cd5<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001MP4 \u30b3\u30f3\u30c6\u30f3\u30c4\u914d\u4fe1\u306e\u6700\u9069\u5316\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u3068\u30d3\u30c7\u30aa \u30b5\u30fc\u30d0\u30fc\u9593\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u3088\u308a\u52b9\u7387\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u914d\u4fe1\u3057\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u6b21\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u5f79\u306b\u7acb\u3061\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3092\u9ad8\u901f\u5316:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u8fd1\u304f\u306b MP4 \u30d5\u30a1\u30a4\u30eb\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3067\u3001\u30d3\u30c7\u30aa \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u4e2d\u306e\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3068\u9045\u5ef6\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u533f\u540d\u30a2\u30af\u30bb\u30b9:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u7279\u5b9a\u306e\u5730\u57df\u5236\u9650\u3092\u56de\u907f\u3057\u3066\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u78ba\u4fdd\u3057\u3001\u533f\u540d\u3067 MP4 \u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5e2f\u57df\u5e45\u306e\u7bc0\u7d04:<\/strong> ISP \u3084\u30b3\u30f3\u30c6\u30f3\u30c4 \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f MP4 \u30d5\u30a1\u30a4\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u5e2f\u57df\u5e45\u3092\u7bc0\u7d04\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>MP4 \u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/MPEG-4_Part_14\" target=\"_new\" rel=\"noopener nofollow\">MPEG-4 \u30d1\u30fc\u30c8 14 \u2013 Wikipedia<\/a><\/li>\n<li><a href=\"https:\/\/www.lifewire.com\/mp4-file-4143568\" target=\"_new\" rel=\"noopener nofollow\">MP4 \u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u3068\u306f\u4f55\u304b\u3001\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b?<\/a><\/li>\n<li><a href=\"https:\/\/www.learningcontainer.com\/mp4-file-extension\/\" target=\"_new\" rel=\"noopener nofollow\">MP4 \u306e\u7d39\u4ecb: \u6b74\u53f2\u3001\u7528\u9014\u306a\u3069<\/a><\/li>\n<li><a href=\"https:\/\/mpeg.chiariglione.org\/\" target=\"_new\" rel=\"noopener nofollow\">MPEG \u2013 \u52d5\u753b\u5c02\u9580\u5bb6\u30b0\u30eb\u30fc\u30d7<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468947,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478065","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>MP4: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is MP4?","answer":"<p>MP4, short for MPEG-4 Part 14, is a digital multimedia container format used to store video, audio, and other multimedia content. It was standardized in 2003 by the Motion Picture Experts Group (MPEG) and the International Organization for Standardization (ISO). MP4 is widely popular for its efficient compression and compatibility, making it essential for video streaming, sharing, and mobile devices.<\/p>"},{"question":"How did MP4 originate, and when was it first mentioned?","answer":"<p>The development of MP4 began in the late 1990s when there was a need for a more advanced and efficient multimedia container format. The first mention of MP4 came in 2001 in a technical document released by the International Organization for Standardization (ISO) detailing the specifications of the MPEG-4 Part 14 format.<\/p>"},{"question":"How does MP4 work internally?","answer":"<p>MP4 files consist of atoms, which are basic building blocks of data in the format. The internal structure includes atoms like ftyp, moov, mdat, trak, and mdia, which store metadata, media content, and track information. When playing an MP4 file, the player reads the moov atom to decode and render the content.<\/p>"},{"question":"What are the key features of MP4?","answer":"<p>MP4 stands out for its high compression efficiency, versatility in supporting various codecs, metadata support, and seamless streaming capabilities. It is widely compatible with different devices, making it an ideal choice for content creators and consumers.<\/p>"},{"question":"What types of MP4 files exist?","answer":"<p>There are different types of MP4 files based on the codecs and features used. Some common types include MP4 with H.264, MP4 with HEVC, MP4 with MPEG-2, and MP4 with embedded subtitles.<\/p>"},{"question":"How is MP4 used, and what problems may arise?","answer":"<p>MP4 is used for online video sharing, streaming services, and on mobile devices due to its quality and compatibility. Problems with MP4 files may include playback issues or corruption. Solutions involve installing codec packs and using specialized repair tools.<\/p>"},{"question":"How does the future look for MP4?","answer":"<p>The future of MP4 involves enhanced codecs for better compression, support for emerging trends like 360-degree video, and potentially interactive features for more engaging experiences.<\/p>"},{"question":"How are proxy servers associated with MP4?","answer":"<p>Proxy servers optimize MP4 content delivery by caching files closer to users, accelerating streaming, enabling anonymous access, and saving bandwidth for content providers and ISPs.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478065\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/468947"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=478065"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}