{"id":973,"date":"2011-04-24T12:14:07","date_gmt":"2011-04-24T04:14:07","guid":{"rendered":"http:\/\/blogs.openfoundry.org\/florenceko\/?p=973"},"modified":"2011-04-24T12:14:07","modified_gmt":"2011-04-24T04:14:07","slug":"%e8%ab%87%e5%bd%b1%e9%9f%b3%e7%b7%a8%e7%a2%bc%e7%9a%84%e9%96%8b%e6%94%be%e5%b0%88%e5%88%a9%e8%88%87%e5%95%86%e6%a5%ad%e6%87%89%e7%94%a8%ef%bc%9a%e5%be%9e-webm-%e8%88%87-h-264-%e6%a0%bc%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/florenceko.me\/?p=973","title":{"rendered":"\u8ac7\u5f71\u97f3\u7de8\u78bc\u7684\u958b\u653e\u5c08\u5229\u8207\u5546\u696d\u61c9\u7528\uff1a\u5f9eWebM\u8207H.264\u683c\u5f0f\u7684\u6bd4\u8f03\u89c0\u9ede\u51fa\u767c"},"content":{"rendered":"

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Google \u5728 2010 \u5e74\u555f\u52d5 WebM \u8a08\u756b\uff08\u8a3b\u4e00\uff09\uff0c\u9019\u662f\u4e00\u5957\u958b\u653e\u3001\u514d\u8cbb\u7684\u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\uff0c\u4e0d\u50c5\u5176\u4e2d\u7684\u7a0b\u5f0f\u78bc\u63a1\u7528\u81ea\u7531\u8edf\u9ad4\u6388\u6b0a\u689d\u6b3e\u91cb\u51fa\uff0c\u5176\u4e2d\u7684\u5c08\u5229\u6280\u8853\u4e5f\u63a1\u7528\u516c\u773e\u6388\u6b0a\u7684\u65b9\u5f0f\u958b\u653e\u4ed6\u4eba\u514d\u8cbb\u5229 \u7528\uff0cGoogle \u4e26\u5728 2011 \u5e74 1 \u6708\u8868\u793a\u6703\u65bc Chrome \u700f\u89bd\u5668\u88e1\u79fb\u9664\u5c0d\u65bc H.264 \u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\u7684\u652f\u63f4\uff08\u8a3b\u4e8c\uff09\uff0c\u64f4\u5927\u5ba3\u793a\u671d\u8457\u958b\u653e\u5f71\u97f3\u683c\u5f0f\u7684\u653f\u7b56\u9081\u9032\u3002\u4f46\u8207 WebM \u6709\u7af6\u722d\u95dc\u4fc2\u7684 H.264 \u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\u5176\u5be6\u4e5f\u5728\u53bb\u5e74\u5ba3\u4f48\uff0c\u5c0d\u65bc\u514d\u8cbb\u7db2\u7ad9\u63a1\u53d6\u6c38\u4e45\u4e0d\u6536\u53d6\u6388\u6b0a\u91d1\u7684\u653f\u7b56\uff08\u8a3b\u4e09\uff09\uff0c\u4e4d\u770b\u4e4b\u4e0b\uff0c\u9019\u4f3c\u4e4e\u4e5f\u662f\u4e00\u7a2e\u53e6\u985e\u7684\u958b\u653e\u5c08\u5229\u6388\u6b0a\u3002\u4f46\u662f\uff0c\u9019\u4e9b\u5c08\u5229\u5f71\u97f3\u7de8\u78bc \u683c\u5f0f\u5728\u6388\u6b0a\u653f\u7b56\u4e0a\u7684\u8b8a\u52d5\uff0c\u771f\u7684\u6703\u5982\u540c\u8868\u9762\u4e0a\u6240\u770b\u5230\u90a3\u6a23\u958b\u653e\u8207\u7f8e\u597d\uff1f\u53ea\u8981\u662f\u61c9\u7528\u5728\u514d\u8cbb\u7db2\u7ad9\u4e0a\uff0c\u7db2\u7ad9\u7d93\u71df\u8005\u5c31\u53ef\u4ee5\u96a8\u610f\u9078\u64c7 WebM \u6216 H.264 \u683c\u5f0f\u4f86\u5be6\u4f5c\u5230\u5f71\u97f3\u8edf\u9ad4\u4e2d\uff0c\u800c\u7121\u9808\u64d4\u5fc3\u4efb\u4f55\u5f8c\u7e8c\u53ef\u80fd\u7522\u751f\u7684\u5c08\u5229\u6388\u6b0a\u554f\u984c\uff1f\u91dd\u5c0d\u9019\u4e9b\u7591\u554f\uff0c\u672c\u6587\u5c07\u6703\u52a0\u4ee5\u8aaa\u660e\uff0c\u4e26\u63d0\u51fa\u4e00\u4e9b\u5efa\u8b70\u63aa\u65bd\u3002<\/p>\n

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WebM \u662f Google \u91cb\u51fa\u7684\u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\uff0c\u5176\u63a1\u7528 BSD License \u7684\u65b9\u5f0f\u91cb\u51fa\uff08\u8a3b\u56db\uff09\uff0c\u4e26\u91dd\u5c0d\u5176\u4e2d VP8 \u7de8\u78bc\u76f8\u95dc\u6280\u8853\u6dfb\u9644\u7279\u8a31\u7684\u5c08\u5229\u9069\u7528\u689d\u6b3e\uff08\u8a3b\u4e94\uff09\u3002Google \u4e4b\u6240\u4ee5\u5927\u529b\u63a8\u52d5 WebM \u683c\u5f0f\uff0c\u4e26\u4e14\u9858\u610f\u63a1\u7528\u516c\u773e\u6388\u6b0a\u4f86\u958b\u653e\u516c\u773e\u5229\u7528 WebM \u7a0b\u5f0f\u78bc\u8207\u5c08\u5229\u6280\u8853\uff0c\u63a8\u4f30\u5f71\u97ff\u56e0\u7d20\u6709\u4e8c\uff1a\u4e00\u65b9\u9762\u662f\u5207\u5408 Google \u81ea\u5bb6\u700f\u89bd\u5668 Chrome \u7684\u958b\u767c\u8da8\u52e2\uff0c\u81ea\u884c\u638c\u63e1\u7db2\u8def\u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\u4f86\u6276\u52a9 Chrome \u7684\u672a\u4f86\u767c\u5c55\uff1b\u800c\u53e6\u4e00\u65b9\u9762\uff0c\u76ee\u524d\u4e16\u4e0a\u6700\u5927\u7684\u7dda\u4e0a\u5f71\u97f3\u5a92\u9ad4\u7db2\u7ad9 YouTube \u70ba\u5176\u6240\u6709\uff0c\u4f46 H.264 \u7684\u6240\u6709\u6a5f\u69cb MPEG LA\uff08\u8a3b\u516d\uff09\u5728\u5c08\u5229\u6388\u6b0a\u898f\u7bc4\u8207\u6536\u8cbb\u6a19\u6e96\u614b\u5ea6\u4e00\u76f4\u4e0d\u660e\u78ba\uff0c\u82e5\u662f\u65e5\u5f8c MPEG LA \u7684\u5c08\u5229\u6388\u6b0a\u614b\u5ea6\u65e5\u8da8\u8f49\u56b4\uff0c\u52e2\u5fc5\u5c0d\u65bc YouTube \u7684\u670d\u52d9\u9020\u6210\u6975\u5927\u7684\u885d\u64ca\uff0c\u56e0\u6b64 Google \u6210\u7acb\u8207\u63a8\u52d5 WebM \u5c08\u6848\u8207\u683c\u5f0f\uff0c\u4ee5\u4fbf\u672a\u4f86\u53ef\u4ee5\u9069\u6642\u5730\u5c07\u5176\u6240\u63d0\u4f9b\u7684\u7dda\u4e0a\u5f71\u97f3\u683c\u5f0f\uff0c\u8f49\u70ba WebM \u7de8\u78bc\u4e4b\u5f8c\u518d\u884c\u4f9b\u61c9\uff0c\u4ee5\u907f\u9664\u65e5\u5f8c\u53ef\u80fd\u5f97\u53d7\u5236\u65bc H.264 \u9ad8\u984d\u5c08\u5229\u6388\u6b0a\u91d1\u4e0b\u7684\u4e0d\u78ba\u5b9a\u98a8\u96aa\u3002<\/p>\n

\u4e0d\u904e MPEG LA \u5df2\u7d93\u65bc\u53bb\u5e74\u8868\u793a\uff0c\u91dd\u5c0d\u514d\u8cbb\u7db2\u7ad9\u5c07\u6c38\u4e45\u4e0d\u6703\u6536\u53d6\u5c08\u5229\u6388\u6b0a\u91d1\uff0cYouTube \u76ee\u524d\u6240\u63d0\u4f9b\u7684\u5f71\u97f3\u670d\u52d9\u4e5f\u662f\u514d\u8cbb\u7684\uff0c\u61c9\u8a72\u53ef\u4ee5\u5b89\u5fc3\u5730\u7e7c\u7e8c\u5229\u7528 H.264 \u683c\u5f0f\u5728\u5176\u5f71\u97f3\u670d\u52d9\u4e2d\uff0c\u7136\u800c Google \u4ecd\u7136\u7e7c\u7e8c\u64f4\u5927\u5c0d WebM \u5c08\u6848\u7684\u63a8\u5ee3\uff0c\u4e26\u4e14\u5ba3\u4f48\u5728 Chrome \u700f\u89bd\u5668\u7684\u672a\u4f86\u958b\u767c\u88e1\uff0c\u505c\u6b62\u5c0d\u65bc H.264 \u7684\u652f\u63f4\uff0c\u7a76\u5176\u8981\u7406\uff0c\u6cf0\u534a\u662f\u56e0\u70ba MPEG LA \u6240\u63d0\u51fa\u4e0d\u6536\u53d6\u5c08\u5229\u6388\u6b0a\u91d1\u7684\u653f\u7b56\uff0c\u5176\u5be6\u4e26\u4e0d\u5982\u8868\u9762\u4e0a\u6240\u611f\u89ba\u5230\u7684\u90a3\u6a23\u7f8e\u597d\u3002<\/p>\n

\u3010\u76ee\u524d\u7684 H .264 \u5c08\u5229\u6388\u6b0a\u653f\u7b56\u5728\u5167\u6db5\u4e0a\u8207\u820a\u6709\u7684\u5dee\u7570\u4e0d\u5927\u3011<\/strong><\/p>\n

H.264 \u5c08\u5229\u7de8\u78bc\u683c\u5f0f\u662f\u7531\u4e00\u5bb6\u5c08\u5229\u6388\u6b0a\u516c\u53f8 MPEG LA \u6240\u64c1\u6709\uff0c\u9019\u500b\u7de8\u78bc\u683c\u5f0f\u4e0d\u4f46\u53ef\u4ee5\u52a0\u5f37\u7dda\u4e0a\u5f71\u97f3\u5132\u653e\u4e0a\u7684\u58d3\u7e2e\u6548\u7387\uff0c\u9084\u80fd\u5728\u5404\u7a2e\u7db2\u8def\u74b0\u5883\u4e0b\u9032\u884c\u61c9\u7528\uff0c\u6240\u4ee5\u88ab\u5927\u91cf\u904b\u7528\u65bc\u7dda\u4e0a\u5f71\u97f3\u64ad\u653e\u7db2\u7ad9\u4e0a\uff0c\u76ee\u524d YouTube \u4e0a\u5927\u90e8\u4efd\u7684\u7dda\u4e0a\u5f71\u97f3\u6a94\u6848\u5373\u662f\u63a1\u7528 H.264 \u70ba\u5176\u7de8\u78bc\u683c\u5f0f\u3002\u904e\u53bb MPEG LA \u539f\u672c\u662f\u63a1\u53d6\u9ad8\u984d\u7684\u5c08\u5229\u6388\u6b0a\u91d1\u653f\u7b56\uff0c\u4e0d\u904e\u4e4b\u5f8c\u8abf\u6574\u614b\u5ea6\uff0c\u91dd\u5c0d\u7d42\u7aef\u4f7f\u7528\u8005\u514d\u8cbb\u4f7f\u7528\u5f71\u97f3\u670d\u52d9\u7684\u7db2\u7ad9\uff0c\u627f\u8afe\u5230 2010 \u5e74\u5e95\u4e0d\u6536\u53d6\u5c08\u5229\u6388\u6b0a\u91d1\uff0c\u5f8c\u4f86\u9019\u500b\u671f\u9650\u53c8\u5ef6\u9577\u5230 2015 \u5e74\uff0c\u5230\u4e86 2011 \u5e74\u521d\u53c8\u516c\u4f48\u5c07\u671f\u9593\u6539\u70ba\u6c38\u4e45\uff08\u8a3b\u4e03\uff09\u3002\u5f9e\u9019\u4e00\u9023\u4e32\u6388\u6b0a\u653f\u7b56\u7684\u6539\u8b8a\uff0c\u53ef\u4ee5\u770b\u7684\u51fa\u4f86 MPEG LA \u57fa\u672c\u4e0a\u4ecd\u7136\u662f\u8981\u8cfa\u53d6\u5c08\u5229\u6388\u6b0a\u91d1\u7684\u6536\u76ca\uff0c\u53ea\u662f\u5728\u514d\u8cbb\u7db2\u7ad9\u65b9\u9762\u63a1\u53d6\u5bec\u9b06\u7684\u614b\u5ea6\u800c\u5df2\uff0c\u91dd\u5c0d DVD \u64ad\u653e\u5668\u3001\u5f71\u97f3\u64ad\u653e\u8edf\u9ad4\u7b49\u5546\u54c1\uff0cMPEG LA \u9084\u662f\u7e7c\u7e8c\u6536\u53d6\u76f8\u7576\u6578\u984d\u7684\u5c08\u5229\u6388\u6b0a\u91d1\u3002<\/p>\n

\u800c\u5c0d\u65bc\u975e\u71df\u5229\u6027\u8cea\u7684\u7dda\u4e0a\u5f71\u97f3\u7db2\u7ad9\u800c\u8a00\uff0cH.264 \u5c08\u5229\u683c\u5f0f\u7684\u5f71\u97ff\u672c\u4f86\u4fbf\u4e0d\u5927\uff0c\u56e0\u70ba\u5c08\u5229\u6b0a\u662f\u767c\u63ee\u5728\u5546\u696d\u884c\u70ba\u4e0a\u7684\u5c08\u9580\u71df\u5229\u6b0a\uff0c\u6240\u4ee5\u4f7f\u7528\u975e\u71df\u5229\u7684\u65b9\u5f0f\u7814\u7a76\u6216\u662f\u5229\u7528\u4ed6\u4eba\u5c08\u5229\uff0c\u539f\u5247\u4e0a\u4e26\u4e0d\u4e00\u5b9a\u6703\u4fb5\u72af\u5230\u5c08\u5229\u6b0a\u4eba\u7684\u6b0a \u5229\u3002\u6240\u4ee5\u76ee\u524d\u7db2\u969b\u7db2\u8def\u4e0a\u8a31\u591a\u514d\u8cbb\u8b93\u4f7f\u7528\u8005\u4e0a\u50b3\u8207\u89c0\u770b\u7684\u5f71\u97f3\u4e32\u6d41\u670d\u52d9\uff0c\u672c\u4f86\u5c31\u4e0d\u6703\u76f4\u63a5\u53d7\u5230 H.264 \u683c\u5f0f\u65e5\u5f8c\u6536\u8cbb\u7684\u76f4\u63a5\u885d\u64ca\uff0c\u800c MPEG LA \u4e5f\u9806\u61c9\u9019\u500b\u539f\u7406\uff0c\u800c\u505a\u51fa\u4e86\u4e0a\u8ff0\u4e0d\u6536\u53d6\u5c08\u5229\u6b0a\u6388\u6b0a\u91d1\u7684\u8072\u660e\uff0c\u6240\u4ee5\u9019\u4e9b\u514d\u8cbb\u6388\u6b0a\u7684\u5ba3\u544a\uff0c\u4e5f\u88ab\u90e8\u4efd\u7684\u8a55\u8b70\u8005\u8a8d\u70ba\u662f\u540a\u990c\u884c\u70ba\uff08\u8a3b\u516b\uff09\uff0c\u56e0\u70ba\uff0c\u7121\u8ad6\u662f\u66ab\u6642\u6216\u662f\u6c38\u9060\u7684 \u514d\u8cbb\uff0c\u5176\u53d7\u76ca\u5c0d\u8c61\u90fd\u4fb7\u9650\u5728\u975e\u5546\u696d\u4f7f\u7528\u7684\u514d\u8cbb\u7db2\u7ad9\uff0c\u4e5f\u5c31\u662f\u90a3\u4e9b\u4f9d\u7167\u5c08\u5229\u6b0a\u6cd5\u7406\u672c\u4f86\u5c31\u4e0d\u5fc5\u7136\u9700\u8981\u652f\u4ed8\u6388\u6b0a\u91d1\u7684\u4f7f\u7528\u8005\uff0c\u9019\u6a23\u7684\u8072\u660e\u8207\u653f\u7b56\uff0c\u4e26\u6c92\u6709\u771f\u6b63\u6539\u8b8a\u73fe\u72c0\u3002<\/p>\n

\u6b64 \u5916\uff0c\u63d0\u4f9b\u7d42\u7aef\u4f7f\u7528\u8005\u514d\u8cbb\u670d\u52d9\u7684\u5f71\u97f3\u7db2\u7ad9\uff0c\u5728\u754c\u5b9a\u4e0a\u53ef\u80fd\u6703\u7522\u751f\u554f\u984c\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u96d6\u7136\u7dda\u4e0a\u5f71\u97f3\u7db2\u7ad9\u63d0\u4f9b\u4e00\u822c\u4f7f\u7528\u8005\u514d\u8cbb\u4e0a\u50b3\u8207\u700f\u89bd\u5f71\u7247\u7684\u670d\u52d9\uff0c\u4e0d\u904e\u4e5f\u540c\u6642\u63d0\u4f9b\u4ed8 \u8cbb\u7684\u9032\u968e\u670d\u52d9\uff0c\u8b93\u4ed8\u8cbb\u6703\u54e1\u53ef\u4ee5\u4eab\u6709\u66f4\u5927\u7684\u4e0a\u50b3\u7a7a\u9593\u3001\u4e0a\u50b3\u756b\u8cea\u66f4\u70ba\u7d30\u7dfb\u7684\u5f71\u7247\uff0c\u53c8\u6216\u8005\u53ef\u4ee5\u7dda\u4e0a\u89c0\u8cde\u51fa\u79df\u5f71\u7247\uff0c\u9019\u6a23\u9032\u968e\u7684\u6536\u8cbb\u884c\u70ba\u662f\u5426\u5b8c\u5168\u7b26\u5408\u300c\u514d\u8cbb\u63d0\u4f9b\u7d42\u7aef \u4f7f\u7528\u8005\u670d\u52d9\u300d\u7684\u689d\u4ef6\uff0c\u662f\u6709\u7591\u554f\u7684\uff1b\u53c8\u6216\u8005\uff0c\u7db2\u7ad9\u696d\u8005\u63d0\u4f9b\u7279\u6b8a\u7684\u5ee3\u544a\u65b9\u6848\uff0c\u8b93\u4f7f\u7528\u8005\u53ef\u4ee5\u5728\u652f\u4ed8\u82e5\u5e72\u8cbb\u7528\u5f8c\uff0c\u5c07\u7522\u54c1\u6216\u662f\u96fb\u5f71\u7684\u5ba3\u50b3\u5f71\u7247\u653e\u5728\u7db2\u7ad9\u4e0a\uff0c\u8b93\u4eba\u514d\u8cbb\u700f \u89bd\uff0c\u9019\u6a23\u7684\u71df\u5229\u6a21\u5f0f\u662f\u5426\u4e5f\u53ef\u4ee5\u7b26\u5408\u300c\u514d\u8cbb\u63d0\u4f9b\u7d42\u7aef\u4f7f\u7528\u8005\u670d\u52d9\u300d\u7684\u689d\u4ef6\u5462\uff1f\u7531\u65bc\u7db2\u7ad9\u670d\u52d9\u65e5\u8da8\u591a\u5143\u5316\uff0c\u6536\u8cbb\u6a21\u5f0f\u4e5f\u56e0\u800c\u591a\u6a23\u5316\uff0c\u4ec0\u9ebc\u7684\u7db2\u7ad9\u670d\u52d9\u53ef\u4ee5\u6b78\u5165\u300c\u514d\u8cbb\u63d0 \u4f9b\u7d42\u7aef\u4f7f\u7528\u8005\u670d\u52d9\u300d\u7684\u7bc4\u7587\uff0c\u4ecd\u662f\u500b\u6709\u5f85\u7406\u8ad6\u8207\u5be6\u52d9\u4f86\u5171\u540c\u88dc\u5145\u7684\u7070\u8272\u5730\u5e36\u3002<\/p>\n

\u5f9e\u4ee5\u4e0a\u7684\u5206\u6790\u53ef\u4ee5\u4e86\u89e3\u5230\uff0c\u76ee\u524d H.264 \u7684\u5c08\u5229\u6388\u6b0a\u653f\u7b56\uff0c\u8207\u4e4b\u524d\u7684\u5dee\u7570\u4e26\u4e0d\u5927\uff0c\u4e26\u4e14\u9084\u6d89\u53ca\u5230\u5b9a\u7fa9\u6a21\u7cca\u4e0d\u6e05\u7684\u300c\u514d\u8cbb\u63d0\u4f9b\u7d42\u7aef\u4f7f\u7528\u8005\u670d\u52d9\u300d\u7684\u6982\u5ff5\uff0c\u986f\u793a MPEG LA \u5728\u672c\u8cea\u4e0a\u91dd\u5c0d\u5546\u696d\u5229\u7528\u884c\u70ba\u6536\u53d6\u5c08\u5229\u6388\u6b0a\u91d1\u7684\u614b\u5ea6\u4e26\u6c92\u6709\u6539\u8b8a\uff0c\u56e0\u6b64 Google \u5728\u555f\u52d5 WebM \u8a08\u756b\u4e4b\u5f8c\uff0c\u4ea6\u540c\u6b65\u65bc Chrome \u700f\u89bd\u5668\u88e1\u79fb\u9664\u5c0d\u65bc H.264 \u5f71\u97f3\u7de8\u78bc\u683c\u5f0f\u7684\u652f\u63f4\uff0c\u9019\u4e9b\u90fd\u662f\u53ef\u9810\u6e2c\u7684\u5408\u7406\u884c\u70ba\u8207\u63aa\u65bd\u3002<\/p>\n

\u3010\u4ee5 GIF \u8207 PNG \u683c\u5f0f\u7684\u6b77\u53f2\u767c\u5c55\u70ba\u4ed6\u5c71\u4e4b\u77f3\u3011<\/strong><\/p>\n

\u5176\u5be6 H.264 \u8207 WebM \u4e4b\u9593\u7684\u6388\u6b0a\u5206\u6790\u6bd4\u8f03\uff0c\u5728\u6b77\u53f2\u7684\u8108\u7d61\u88e1\u53ef\u4ee5\u63f4\u5f15 GIF \u8207 PNG \u4f5c\u70ba\u5f88\u597d\u7684\u5c0d\u7167\u4f8b\u5b50\u3002<\/p>\n

GIF \u9019\u500b\u52d5\u614b\u5716\u7247\u7684\u5132\u5b58\u683c\u5f0f\uff0c\u5176\u5167\u542b LZW (Lempel-Ziv-Welch) \u5c08\u5229\u58d3\u7e2e\u6f14\u7b97\u6cd5\uff0c\u9019\u500b\u512a\u79c0\u7684\u6f14\u7b97\u6cd5\u8b93 GIF \u683c\u5f0f\u7684\u5716\u7247\u4f54\u7528\u5f88\u5c0f\u7684\u5132\u5b58\u7a7a\u9593\uff0c\u4f46\u5728\u52d5\u756b\u986f\u793a\u4e0a\u537b\u7d72\u6beb\u4e0d\u5f71\u97ff\u5230\u8272\u5f69\u8207\u6d41\u66a2\u5ea6\u7684\u8868\u73fe\uff0c\u5176\u5c08\u5229\u6b0a\u4eba UniSys \u521d\u671f\u5c07\u6b64\u683c\u5f0f\u63d0\u4f9b\u4e88\u516c\u773e\u81ea\u7531\u4f7f\u7528\uff0c\u5176\u5f8c\u537b\u7a81\u7136\u6539\u5f26\u6613\u8f4d\u5927\u8209\u5fb5\u6536\u5c08\u5229\u6388\u6b0a\u8cbb\u7528\uff0c\u5f9e\u800c\u5f15\u8d77\u81ea\u7531\u8edf\u9ad4\u754c\u7684\u7fa4\u8d77\u64bb\u4f10\uff0c\u4e26\u50ac\u751f\u51fa PNG \u5716\u7247\u7684\u683c\u5f0f\u4ee5\u70ba\u66ff\u4ee3\u4f7f\u7528\u7684\u65b9\u6848\u3002H.264 \u8207 WebM \u7684\u95dc\u4fc2\u8207\u767c\u5c55\u6a21\u5f0f\uff0c\u8207 GIF \u8207 PNG \u76f8\u7576\u8fd1\u4f3c\uff0c\u6240\u4ee5\u5408\u7406\u7684\u63a8\u4f30\u3001\u524d\u8eca\u53ef\u9451\uff0cMPEG LA \u5c31 H.264 \u683c\u5f0f\u7684\u6388\u6b0a\u91d1\u7b56\u7565\u4e26\u4e0d\u6703\u5b8c\u5168\u8d70\u4e0a LZW \u7684\u820a\u8def\uff0c\u5176\u6703\u63a2\u6c42\u8f03\u70ba\u5408\u7406\u4e14\u7de9\u9032\u7684\u5c08\u5229\u6388\u6b0a\u91d1\u71df\u6536\u6a21\u5f0f\uff0c\u4f46\u7121\u8ad6\u5982\u4f55\uff0c\u5f8c\u7e8c\u5fc5\u7136\u9084\u662f\u6703\u671d\u8457\u9010\u6b65\u589e\u52a0\u5c08\u5229\u6388\u6b0a\u8cbb\u7528\u7684\u6a21\u5f0f\u524d\u9032\uff0c\u540c\u6a23\u5730\uff0cGoogle \u4e5f\u4e86\u89e3\u9019\u6a23\u7684\u9053\u7406\uff0c\u56e0\u6b64\u672a\u4f86\u5fc5\u7136\u6703\u6301\u7e8c\u5c0d WebM \u5f71\u97f3\u683c\u5f0f\u9032\u884c\u63a8\u5ee3\uff0c\u4ee5\u907f\u514d\u672a\u4f86\u9677\u65bc\u53d7\u5236\u4ed6\u4eba\u5c08\u5229\u6280\u8853\u7684\u7a98\u5883\u3002<\/p>\n

\u3010\u7dda\u4e0a\u5f71\u97f3\u7db2\u7ad9\u7684\u672a\u4f86\u767c\u5c55\u8207\u5efa\u8b70\u3011<\/strong><\/p>\n

\u5f9e WebM \u8207 H.264 \u683c\u5f0f\u7684\u6bd4\u8f03\u89c0\u9ede\u51fa\u767c\uff0c\u5982\u679c\u4f7f\u7528\u8005\u6240\u67b6\u8a2d\u7684\u7dda\u4e0a\u5f71\u97f3\u7db2\u7ad9\u7d14\u7cb9\u63d0\u4f9b\u514d\u8cbb\u7684\u5f71\u97f3\u670d\u52d9\uff0c\u81ea\u7136\u53ef\u4ee5\u4f9d\u7167\u5c08\u5229\u6b0a\u7684\u4f7f\u7528\u539f\u5247\u8207 MPEG LA \u7684\u5ba3\u7a31\uff0c\u6c38\u4e45\u514d\u8cbb\u7684\u4f7f\u7528 H.264 \u70ba\u5176\u7dda\u4e0a\u5f71\u97f3\u5a92\u9ad4\u7684\u58d3\u7e2e\u683c\u5f0f\uff0c\u4f46\u82e5\u662f\u7db2\u7ad9\u6709\u5ee3\u544a\u6536\u76ca\u65e5\u589e\u7684\u73fe\u8c61\uff0c\u6216\u662f\u65e5\u5f8c\u6709\u6280\u8853\u6388\u6b0a\u79fb\u8f49\u3001\u6539\u8b8a\u71df\u904b\u6a21\u5f0f\u7684\u6253\u7b97\uff0c\u5247\u7b46\u8005\u63d0\u4f9b\u4e0b\u5217\u4e8c\u9ede\u5efa\u8b70\u4f5c\u70ba\u53c3\u8003\uff0c\u4ee5\u63d0\u9192\u7db2 \u7ad9\u7684\u7d93\u71df\u8005\u53ef\u4ee5\u5373\u65e9\u898f\u5283\u5f71\u97f3\u7de8\u78bc\u5c08\u5229\u7684\u904b\u7528\u7b56\u7565\uff0c\u964d\u4f4e\u7121\u9810\u8b66\u8cbb\u7528\u652f\u51fa\u8207\u5f8c\u7e8c\u6cd5\u5f8b\u7cfe\u7d1b\u767c\u751f\u7684\u98a8\u96aa\uff1a<\/p>\n

(1) \u9010\u6b65\u4ee5 WebM \u683c\u5f0f\u4e4b\u6a94\u6848\u4ee3\u63db H.264 \u683c\u5f0f\u4e4b\u7dda\u4e0a\u5f71\u97f3\u6a94\u6848<\/strong><\/p>\n

BSD License \u5728\u89e3\u91cb\u4e0a\uff0c\u70ba\u4e00\u5177\u4e0d\u53ef\u64a4\u56de\u6027 (irrevocable) \u7684\u81ea\u7531\u8edf\u9ad4\u6388\u6b0a\u689d\u6b3e\uff0c\u4e5f\u5c31\u662f\u8aaa\uff0cWebM \u683c\u5f0f\u4ee5\u53d6\u5f97\u6388\u6b0a\u6642\u7684\u65e2\u6210 (as is) \u72c0\u614b\u5411\u5916\u91cb\u51fa\uff0c\u4e00\u65e6\u53d6\u5f97\u6388\u6b0a\u4e4b\u5f8c\uff0c\u5247\u6b64\u6388\u6b0a\u5c07\u4e0d\u6703\u56e0\u70ba\u5c08\u5229\u6b0a\u4eba\u7684\u4e8b\u5f8c\u53cd\u6094\uff0c\u800c\u5c0d\u4f7f\u7528\u8005\u672c\u4f86\u5df2\u7d93\u53d6\u5f97\u7684\u6388\u6b0a\u7522\u751f\u4efb\u4f55\u5f71\u97ff\uff08\u8a3b\u4e5d\uff09\u3002\u9019\u6a23\u7684\u6388\u6b0a\u65b9\u5f0f\uff0c\u5c07\u53ef\u4ee5\u4f7f \u7dda\u4e0a\u5f71\u97f3\u7db2\u7ad9\u65e5\u5f8c\u53d7\u5230\u5de8\u984d\u5c08\u5229\u6388\u6b0a\u91d1\u8981\u6c42\u7684\u98a8\u96aa\u6027\u964d\u81f3\u6700\u4f4e\u3002\u4f46\u53cd\u904e\u4f86\u8aaa\uff0c\u76ee\u524d WebM \u683c\u5f0f\u5f71\u97f3\u6a94\u6848\u5176\u58d3\u7e2e\u6548\u7387\u53ca\u64ad\u653e\u6548\u679c\uff0c\u8207 H.264 \u683c\u5f0f\u7684\u8868\u73fe\u4ecd\u6709\u76f8\u7576\u843d\u5dee\uff0c\u9078\u7528\u54ea\u4e00\u7a2e\u5f71\u97f3\u683c\u5f0f\u7684\u512a\u52a3\u5f97\u5931\uff0c\u4fbf\u8981\u7531\u7db2\u7ad9\u958b\u767c\u8005\u5c31\u73fe\u5be6\u72c0\u6cc1\u9032\u884c\u8861\u91cf\u8207\u5229\u5f0a\u8a55\u4f30\u4e4b\u5f8c\uff0c\u4f86\u52a0\u4ee5\u6c7a\u5b9a\u3002<\/p>\n

(2) \u660e\u793a\u6388\u6b0a\u544a\u77e5\u6e05\u55ae\u4e26\u4ee5\u4e4b\u70ba\u7db2\u7ad9\u6280\u8853\u79fb\u8f49\u5951\u7d04\u7684\u4e00\u90e8\u4efd<\/strong><\/p>\n

\u539f \u672c\u4e0d\u7528\u652f\u4ed8 MPEG LA \u5c08\u5229\u6388\u6b0a\u91d1\u7684\u7db2\u7ad9\uff0c\u6709\u53ef\u80fd\u56e0\u70ba\u8cb7\u8ce3\u6216\u8005\u6280\u8853\u79fb\u8f49\u7b49\u539f\u56e0\uff0c\u5c0e\u81f4\u7db2\u7ad9\u670d\u52d9\u578b\u614b\u8f49\u70ba\u6536\u8cbb\u5236\uff0c\u672c\u4f86\u4e26\u4e0d\u9700\u8981\u4ed8\u8cbb\u53d6\u5f97\u7684 H.264 \u5c08\u5229\u6388\u6b0a\uff0c\u6b64\u6642\u5373\u8f49\u70ba\u9700\u8981\u4ed8\u8cbb\u5f8c\u65b9\u53ef\u53d6\u5f97\uff0c\u6240\u4ee5\u5be6\u52d9\u4e0a\u6700\u53ef\u884c\u7684\u4f5c\u6cd5\u4e4b\u4e00\uff0c\u4fbf\u662f\u7531\u8ce3\u65b9\u6216\u6280\u8853\u79fb\u8f49\u51fa\u53bb\u7684\u4e00\u65b9\uff0c\u5217\u51fa\u4e00\u4efd\u65e5\u5f8c\u5fc5\u9808\u8981\u53e6\u884c\u53d6\u5f97\u6388\u6b0a\u7684\u667a\u6167\u8ca1\u7522\u6e05 \u55ae\uff0c\u7d66\u4e88\u8cb7\u65b9\u6216\u53d6\u5f97\u6280\u8853\u7684\u4e00\u65b9\uff0c\u4ee5\u76e1\u5176\u660e\u793a\u544a\u77e5\u4e4b\u7fa9\u52d9\uff0c\u540c\u6642\u5c07\u6b64\u4efd\u6e05\u55ae\u7d0d\u5165\u6210\u70ba\u5951\u7d04\u7684\u4e00\u90e8\u4efd\uff0c\u9019\u6a23\u4e00\u4f86\uff0c\u8cb7\u65b9\u6216\u662f\u53d6\u5f97\u6280\u8853\u7684\u4e00\u65b9\u5c31\u88ab\u660e\u793a\u544a\u77e5\uff0c\u9700\u8981\u4f9d\u6e05\u55ae \u7684\u6307\u793a\u53e6\u884c\u53d6\u5f97 H.264 \u5c08\u5229\u6388\u6b0a\u65b9\u53ef\u6536\u8cbb\u71df\u904b\u7db2\u7ad9\uff0c\u82e5\u5176\u6020\u65bc\u53d6\u5f97\u5c08\u5229\u6388\u6b0a\u4ee5\u81f4\u4e8b\u5f8c\u767c\u751f\u722d\u8a1f\uff0c\u5176\u640d\u5bb3\u4e4b\u7522\u751f\u8207\u5f8c\u7e8c\u6240\u751f\u7684\u8ce0\u511f\u8cac\u4efb\uff0c\u4fbf\u4e0d\u6703\u88ab\u6b78\u8cac\u65bc\u5df2\u5584\u76e1\u660e\u793a\u544a\u77e5\u7fa9\u52d9\u4e4b\u8ce3\u65b9\u6216\u79fb\u8f49\u6280 \u8853\u51fa\u53bb\u7684\u4e00\u65b9\u3002<\/p>\n

\u8a3b\u4e00\uff1aWebM \u8a08\u756b\u7db2\u7ad9\uff1ahttp:\/\/www.webmproject.org\/<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u4e8c\uff1aHTML Video Codec Support in Chrome\uff0chttp:\/\/blog.chromium.org\/2011\/01\/html-video-codec-support-in-chrome.html<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u4e09\uff1aMPEG LA\u2019s AVC License Will Not Charge Royalties for Internet Video that is Free to End Users through Life of License\uff0c\u00a0<\/span>http:\/\/www.mpegla.com\/Lists\/MPEG%20LA%20News%20List\/Attachments\/231\/n-10-08-26.pdf<\/a><\/span>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u56db\uff1aNew and simplified BSD license\uff0chttp:\/\/www.webmproject.org\/license\/software\/<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u4e94\uff1aAdditional IP Rights Grant (Patents)\uff0chttp:\/\/www.webmproject.org\/license\/additional\/<\/a>\uff0c \u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002\u56e0\u70ba\u9810\u8a2d\u7684 BSD License \u4e26\u672a\u5c31\u5c08\u5229\u6388\u6b0a\u65b9\u9762\u6709\u6240\u63cf\u8ff0\uff0c\u6240\u4ee5 WebM \u4f7f\u7528\u6dfb\u52a0\u689d\u6b3e\u7684\u65b9\u5f0f\u5c07\u5c08\u5229\u6b0a\u4e00\u4f75\u6388\u6b0a\u51fa\u53bb\u8b93\u4e00\u822c\u4eba\u4f7f\u7528\u5176\u5c08\u5229\u683c\u5f0f\uff0c\u9019\u6a23\u7684\u6388\u6b0a\u653f\u7b56\u8b93 WebM \u6240\u5305\u542b\u7684\u7a0b\u5f0f\u78bc\u8457\u4f5c\u6b0a\u8207\u6280\u8853\u5c08\u5229\u6b0a\uff0c\u5168\u90e8\u90fd\u900f\u904e\u516c\u773e\u6388\u6b0a\u6a21\u5f0f\u4f86\u958b\u653e\u7d66\u6240\u6709\u4eba\u514d\u8cbb\u5229\u7528\u3002<\/p>\n

\u8a3b\u516d\uff1aMPEG LA \u7db2\u7ad9\uff1ahttp:\/\/www.mpegla.com\/<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u4e03\uff1a\u6f2b\u8ac7\u9ad8\u6e05\u7de8\u78bc\uff1aMPEG4\uff0cH.264 \u8207\u5fae\u8edf VC-1\uff0chttp:\/\/www.digiasia.com.tw\/?mid=Image_fabrication&listStyle=list&document_srl=1122&category=218&sort_index=readed_count&order_type=desc<\/a>\uff1bMPEG LA previously announced it would not charge royalties for such video through December 31, 2015\uff0c\u00a0<\/span>http:\/\/www.mpegla.com\/Lists\/MPEG%20LA%20News%20List\/Attachments\/226\/n-10-02-02.pdf<\/a><\/span>\u3002<\/p>\n

\u8a3b\u516b\uff1aMozilla shrugs off ‘forever free’ H.264 codec license, http:\/\/www.theregister.co.uk\/2010\/08\/26\/mozilla_on_h264\/<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p>\n

\u8a3b\u4e5d\uff1a\u81ea\u7531\u8edf\u9ad4\u57fa\u91d1\u6703\u5ba3\u4f48\u652f\u6301 WebM \u5c08\u6848\uff0chttp:\/\/www.openfoundry.org\/tw\/worldwide-news\/8259-fsf-announces-support-for-webm-project<\/a>\uff0c\u700f\u89bd\u65e5\u671f 2011 \u5e74 4 \u6708 20 \u65e5\u3002<\/p><\/blockquote>\n

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

\u9019\u7bc7\u6587\u7ae0\u539f\u672c\u662f\u5728 2011 \u5e74 4 \u6708 20 \u65e5\u767c\u8868\u65bc OpenFoundry \u7684\u6cd5\u5f8b\u5c08\u6b04\u4e2d\u3002\u5982\u843d\u843d\u9577\u7684\u984c\u76ee\u6240 … \u95b1\u8b80\u5168\u6587\u3008\u8ac7\u5f71\u97f3\u7de8\u78bc\u7684\u958b\u653e\u5c08\u5229\u8207\u5546\u696d\u61c9\u7528\uff1a\u5f9eWebM\u8207H.264\u683c\u5f0f\u7684\u6bd4\u8f03\u89c0\u9ede\u51fa\u767c\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,4],"tags":[38,57,289,74,117,123,154],"class_list":["post-973","post","type-post","status-publish","format-standard","hentry","category-foss-article","category-foss-legal-column","tag-codec","tag-encode","tag-foss","tag-h-264","tag-open-patent","tag-patent","tag-webm"],"_links":{"self":[{"href":"https:\/\/florenceko.me\/index.php?rest_route=\/wp\/v2\/posts\/973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/florenceko.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/florenceko.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/florenceko.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/florenceko.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=973"}],"version-history":[{"count":0,"href":"https:\/\/florenceko.me\/index.php?rest_route=\/wp\/v2\/posts\/973\/revisions"}],"wp:attachment":[{"href":"https:\/\/florenceko.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/florenceko.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/florenceko.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}