{"id":10,"date":"2015-09-08T13:59:00","date_gmt":"2015-09-08T13:59:00","guid":{"rendered":""},"modified":"2015-10-08T07:03:15","modified_gmt":"2015-10-08T07:03:15","slug":"mpeg-encodingnew-entropy-coding-technology","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/mpeg-encodingnew-entropy-coding-technology\/","title":{"rendered":"MPEG encoding:New entropy coding technology"},"content":{"rendered":"<div class=\"aayvh6a0dad6f4f59e\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '61e5902552e2353963d8d2f1bd1f4a8f',\n\t\t'format' : 'iframe',\n\t\t'height' : 250,\n\t\t'width' : 300,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/61e5902552e2353963d8d2f1bd1f4a8f\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.aayvh6a0dad6f4f59e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.aayvh6a0dad6f4f59e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.aayvh6a0dad6f4f59e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.aayvh6a0dad6f4f59e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.aayvh6a0dad6f4f59e {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h4 align=\"justify\">New entropy coding technology<\/h4>\n<p align=\"justify\">The final stage in the compression process is entropy coding. Here, AVC adds two alternative methods for a more powerful entropy coding compared with the variable length coding, VLC used in MPEG-2. These are <i>context adaptive variable length coding <\/i>(CAVLC) and <i>context adaptive binary arithmetic coding <\/i>(CABAC).  <\/p>\n<p align=\"justify\">Recall the VLC employed in MPEG-2 which provides an extremely effi- cient coding scheme based on a table indicating which symbols are much more likely to occur than others. The CAVLC process is a more refined version of this coding method employing a number of codeword tables to encode transform coefficients. The difference is that the best table is selected adaptively based upon statistics of already processed data.  <\/p>\n<p align=\"justify\">The CABAC process offers substantial gains of about 20% compared with VLC at the expense of intensive computing power for both the encoder and decoder. It continually updates the statistics of the incoming data and adaptively adjusts the algorithm in real time.  <\/p><div class=\"nqhus6a0dad6f4f6b0\" ><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-0778475562755157\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- 300x600 television-and-video -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:600px\"\n     data-ad-client=\"ca-pub-0778475562755157\"\n     data-ad-slot=\"6549443290\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.nqhus6a0dad6f4f6b0 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.nqhus6a0dad6f4f6b0 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.nqhus6a0dad6f4f6b0 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.nqhus6a0dad6f4f6b0 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.nqhus6a0dad6f4f6b0 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"hznvw6a0dad6f4f634\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '0c1eb4c533eaedb7b996f49a5a4983a9',\n\t\t'format' : 'iframe',\n\t\t'height' : 300,\n\t\t'width' : 160,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/0c1eb4c533eaedb7b996f49a5a4983a9\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.hznvw6a0dad6f4f634 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.hznvw6a0dad6f4f634 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.hznvw6a0dad6f4f634 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.hznvw6a0dad6f4f634 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.hznvw6a0dad6f4f634 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\"><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-content\/uploads\/2015\/09\/High-definition-television-0541_thum.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-right-width: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"High definition television-0541\" border=\"0\" alt=\"High definition television-0541\" src=\"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-content\/uploads\/2015\/09\/High-definition-television-0541_thum-300x156.jpg\" width=\"372\" height=\"195\" \/><\/a>  <\/p>\n<p align=\"justify\">\n<p align=\"justify\">\n<p align=\"justify\">\n","protected":false},"excerpt":{"rendered":"<p>New entropy coding technology The final stage in the compression process is entropy coding. Here, AVC adds two alternative methods for a more powerful entropy coding compared with the variable length coding, VLC used in MPEG-2. These are context adaptive variable length coding (CAVLC) and context adaptive binary arithmetic coding (CABAC). Recall the VLC employed [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/mpeg-encodingnew-entropy-coding-technology\/\" class=\"more-link\" >Continue reading&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":463,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"views":987,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/10"}],"collection":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/comments?post=10"}],"version-history":[{"count":1,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/10\/revisions"}],"predecessor-version":[{"id":464,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/10\/revisions\/464"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media\/463"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=10"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=10"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}