<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>http://debianws.lexgopc.com/wiki143/index.php?action=history&amp;feed=atom&amp;title=MPEG_user_data</id>
	<title>MPEG user data - Revision history</title>
	<link rel="self" type="application/atom+xml" href="http://debianws.lexgopc.com/wiki143/index.php?action=history&amp;feed=atom&amp;title=MPEG_user_data"/>
	<link rel="alternate" type="text/html" href="http://debianws.lexgopc.com/wiki143/index.php?title=MPEG_user_data&amp;action=history"/>
	<updated>2026-05-10T22:01:40Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.1</generator>
	<entry>
		<id>http://debianws.lexgopc.com/wiki143/index.php?title=MPEG_user_data&amp;diff=5542908&amp;oldid=prev</id>
		<title>imported&gt;SchlurcherBot: Bot: http → https</title>
		<link rel="alternate" type="text/html" href="http://debianws.lexgopc.com/wiki143/index.php?title=MPEG_user_data&amp;diff=5542908&amp;oldid=prev"/>
		<updated>2025-11-16T10:17:38Z</updated>

		<summary type="html">&lt;p&gt;Bot: http → https&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;← Previous 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 10:17, 16 November 2025&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-l15&quot;&gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&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;== External links ==&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;== External links ==&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;*[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http&lt;/del&gt;://www.atsc.org/ ATSC]&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;*[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https&lt;/ins&gt;://www.atsc.org/ ATSC]&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;*[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http&lt;/del&gt;://www.dvb.org/ DVB]&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;*[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https&lt;/ins&gt;://www.dvb.org/ DVB]&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;&amp;lt;!-- * [http://www.nds.com/ NDS] --&amp;gt;&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;&amp;lt;!-- * [http://www.nds.com/ NDS] --&amp;gt;&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;/table&gt;</summary>
		<author><name>imported&gt;SchlurcherBot</name></author>
	</entry>
	<entry>
		<id>http://debianws.lexgopc.com/wiki143/index.php?title=MPEG_user_data&amp;diff=973920&amp;oldid=prev</id>
		<title>imported&gt;Wbm1058: redirect bypass from Active Format Descriptor to Active Format Description using popups</title>
		<link rel="alternate" type="text/html" href="http://debianws.lexgopc.com/wiki143/index.php?title=MPEG_user_data&amp;diff=973920&amp;oldid=prev"/>
		<updated>2024-03-27T10:58:35Z</updated>

		<summary type="html">&lt;p&gt;redirect bypass from &lt;a href=&quot;/wiki143/index.php?title=Active_Format_Descriptor&quot; class=&quot;mw-redirect&quot; title=&quot;Active Format Descriptor&quot;&gt;Active Format Descriptor&lt;/a&gt; to &lt;a href=&quot;/wiki143/index.php?title=Active_Format_Description&quot; title=&quot;Active Format Description&quot;&gt;Active Format Description&lt;/a&gt; using &lt;a href=&quot;/wiki143/index.php?title=En:Wikipedia:Tools/Navigation_popups&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;En:Wikipedia:Tools/Navigation popups (page does not exist)&quot;&gt;popups&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Refimprove|date=January 2012}}&lt;br /&gt;
&lt;br /&gt;
The &amp;#039;&amp;#039;&amp;#039;[[MPEG]] user data&amp;#039;&amp;#039;&amp;#039; feature provides a means to inject application-specific data into an MPEG [[elementary stream]]. User data can be inserted on three different levels:&lt;br /&gt;
*The sequence level&lt;br /&gt;
*The [[group of pictures]] (GOP) level&lt;br /&gt;
*The picture data level&lt;br /&gt;
Applications that process MPEG data do not need to be able to understand data encapsulated in this way, but should be able to preserve it.&lt;br /&gt;
&lt;br /&gt;
Examples of information embedded in MPEG streams as user data are:&lt;br /&gt;
*[[Aspect ratio (image)|Aspect ratio]] information&lt;br /&gt;
*&amp;quot;Hidden&amp;quot; information per the [[Active Format Description]] specification&lt;br /&gt;
*[[Closed captions|Closed captioning]] per the [[EIA-708]] standard&lt;br /&gt;
&lt;br /&gt;
&amp;lt;!-- www.nds.com uses user data for their captions, but it looks proprietary --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
*[http://www.atsc.org/ ATSC]&lt;br /&gt;
*[http://www.dvb.org/ DVB]&lt;br /&gt;
&amp;lt;!-- * [http://www.nds.com/ NDS] --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
[[Category:ATSC]]&lt;br /&gt;
[[Category:Digital television]]&lt;br /&gt;
[[Category:MPEG]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
{{tech-stub}}&lt;/div&gt;</summary>
		<author><name>imported&gt;Wbm1058</name></author>
	</entry>
</feed>