<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>https://wiki.multimedia.cx/index.php?action=history&amp;feed=atom&amp;title=MPEG-4_SLS</id>
	<title>MPEG-4 SLS - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.multimedia.cx/index.php?action=history&amp;feed=atom&amp;title=MPEG-4_SLS"/>
	<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;action=history"/>
	<updated>2026-08-22T04:39:38Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.39.5</generator>
	<entry>
		<id>https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=12479&amp;oldid=prev</id>
		<title>AConverse: update link</title>
		<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=12479&amp;oldid=prev"/>
		<updated>2010-04-03T16:53:54Z</updated>

		<summary type="html">&lt;p&gt;update link&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:53, 3 April 2010&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Company: [[Moving Picture Experts Group|MPEG]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Company: [[Moving Picture Experts Group|MPEG]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Whitepaper: http://&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;www&lt;/del&gt;.chiariglione.org/mpeg&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;/technologies&lt;/del&gt;/mp04-sls/index.htm&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Whitepaper: http://&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mpeg&lt;/ins&gt;.chiariglione.org&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;/technologies&lt;/ins&gt;/mpeg&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;-4&lt;/ins&gt;/mp04-sls/index.htm&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/c052968_ISOIEC_14496-5_2001_Amd_10_2007_Cor_3_2009_Reference_Software.zip&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/c052968_ISOIEC_14496-5_2001_Amd_10_2007_Cor_3_2009_Reference_Software.zip&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>AConverse</name></author>
	</entry>
	<entry>
		<id>https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11916&amp;oldid=prev</id>
		<title>AConverse: 14496-3:2009</title>
		<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11916&amp;oldid=prev"/>
		<updated>2009-08-29T01:49:01Z</updated>

		<summary type="html">&lt;p&gt;14496-3:2009&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:49, 28 August 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l3&quot;&gt;Line 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/c052968_ISOIEC_14496-5_2001_Amd_10_2007_Cor_3_2009_Reference_Software.zip&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/c052968_ISOIEC_14496-5_2001_Amd_10_2007_Cor_3_2009_Reference_Software.zip&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Specification: ISO/IEC 14496-3:&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2005/Amd.2:2006 &lt;/del&gt;([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n6475t.doc Draft])&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Specification: ISO/IEC 14496-3:&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2009 &lt;/ins&gt;([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n6475t.doc Draft])&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;SLS is MPEG-4's hybrid lossless audio codec. It uses a standard MPEG-4 GA core layer. Valid cores include [[AAC]]-LC, AAC Scalable (without LTP), ER AAC LC, ER AAC Scalable, and ER BSAC. It can also operate without a core layer. The core layer is decoded with a fixed integer approximation. Then one of more Lossless enhancement layers may be added. Lossless enhancement layers are entropy coded with either Bit-Plane Golomb Codes (BPGC) or Context Based Arithmetic Codes (CBAC) and Low Energy Mode Codes (LEMC). SLS can also oversample the core coder by up to a factor of 2 or 4.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;SLS is MPEG-4's hybrid lossless audio codec. It uses a standard MPEG-4 GA core layer. Valid cores include [[AAC]]-LC, AAC Scalable (without LTP), ER AAC LC, ER AAC Scalable, and ER BSAC. It can also operate without a core layer. The core layer is decoded with a fixed integer approximation. Then one of more Lossless enhancement layers may be added. Lossless enhancement layers are entropy coded with either Bit-Plane Golomb Codes (BPGC) or Context Based Arithmetic Codes (CBAC) and Low Energy Mode Codes (LEMC). SLS can also oversample the core coder by up to a factor of 2 or 4.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>AConverse</name></author>
	</entry>
	<entry>
		<id>https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11578&amp;oldid=prev</id>
		<title>AConverse: New refsoft</title>
		<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11578&amp;oldid=prev"/>
		<updated>2009-05-14T13:58:34Z</updated>

		<summary type="html">&lt;p&gt;New refsoft&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 06:58, 14 May 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Company: [[Moving Picture Experts Group|MPEG]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Company: [[Moving Picture Experts Group|MPEG]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Whitepaper: http://www.chiariglione.org/mpeg/technologies/mp04-sls/index.htm&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Whitepaper: http://www.chiariglione.org/mpeg/technologies/mp04-sls/index.htm&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;c050830_ISO_IEC_14496&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;5_2001_Amd_10_2007_Cor_1_2008_Reference_Software&lt;/del&gt;.zip&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;c052968_ISOIEC_14496&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;5_2001_Amd_10_2007_Cor_3_2009_Reference_Software&lt;/ins&gt;.zip&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Specification: ISO/IEC 14496-3:2005/Amd.2:2006 ([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n6475t.doc Draft])&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;*Specification: ISO/IEC 14496-3:2005/Amd.2:2006 ([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n6475t.doc Draft])&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>AConverse</name></author>
	</entry>
	<entry>
		<id>https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11409&amp;oldid=prev</id>
		<title>Vitor: Category:Formats missing in FFmpeg</title>
		<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11409&amp;oldid=prev"/>
		<updated>2009-03-22T18:20:24Z</updated>

		<summary type="html">&lt;p&gt;&lt;a href=&quot;/index.php/Category:Formats_missing_in_FFmpeg&quot; title=&quot;Category:Formats missing in FFmpeg&quot;&gt;Category:Formats missing in FFmpeg&lt;/a&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 11:20, 22 March 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l18&quot;&gt;Line 18:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 18:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Audio Codecs]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Audio Codecs]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Lossless Audio Codecs]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Lossless Audio Codecs]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Formats missing in FFmpeg]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Vitor</name></author>
	</entry>
	<entry>
		<id>https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11407&amp;oldid=prev</id>
		<title>AConverse at 17:21, 22 March 2009</title>
		<link rel="alternate" type="text/html" href="https://wiki.multimedia.cx/index.php?title=MPEG-4_SLS&amp;diff=11407&amp;oldid=prev"/>
		<updated>2009-03-22T17:21:30Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;*Company: [[Moving Picture Experts Group|MPEG]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;br /&gt;
*Whitepaper: http://www.chiariglione.org/mpeg/technologies/mp04-sls/index.htm&lt;br /&gt;
*Reference Software: http://standards.iso.org/ittf/PubliclyAvailableStandards/c050830_ISO_IEC_14496-5_2001_Amd_10_2007_Cor_1_2008_Reference_Software.zip&lt;br /&gt;
*Samples: sls* files at ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/compressedMp4/&lt;br /&gt;
*Specification: ISO/IEC 14496-3:2005/Amd.2:2006 ([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n6475t.doc Draft])&lt;br /&gt;
&lt;br /&gt;
SLS is MPEG-4's hybrid lossless audio codec. It uses a standard MPEG-4 GA core layer. Valid cores include [[AAC]]-LC, AAC Scalable (without LTP), ER AAC LC, ER AAC Scalable, and ER BSAC. It can also operate without a core layer. The core layer is decoded with a fixed integer approximation. Then one of more Lossless enhancement layers may be added. Lossless enhancement layers are entropy coded with either Bit-Plane Golomb Codes (BPGC) or Context Based Arithmetic Codes (CBAC) and Low Energy Mode Codes (LEMC). SLS can also oversample the core coder by up to a factor of 2 or 4.&lt;br /&gt;
&lt;br /&gt;
The pre-standardized name for SLS was Advanced Audio Zip (AAZ).&lt;br /&gt;
&lt;br /&gt;
== HD-AAC ==&lt;br /&gt;
*Company: [[Moving Picture Experts Group|MPEG]]/[[Fraunhofer]]/Infocomm Research (I&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;R)&lt;br /&gt;
*Homepage: http://www.iis.fraunhofer.de/EN/bf/amm/projects/lossless/&lt;br /&gt;
*Specification: ISO/IEC 14496-3:2009/Amd.1 ([http://www.itscj.ipsj.or.jp/sc29/open/29view/29n10159t.doc Draft])&lt;br /&gt;
&lt;br /&gt;
The HD-AAC Profile is a limited subset of MPEG-4 SLS in an effort to gain commercial adoption. HD-AAC limits SLS to an AAC-LC core and BPGC with LEMC entropy coding. &lt;br /&gt;
&lt;br /&gt;
[[Category:Audio Codecs]]&lt;br /&gt;
[[Category:Lossless Audio Codecs]]&lt;/div&gt;</summary>
		<author><name>AConverse</name></author>
	</entry>
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