<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: 1080p Math</title>
	<atom:link href="http://nslog.com/2006/11/18/1080p_math/feed" rel="self" type="application/rss+xml" />
	<link>http://nslog.com/2006/11/18/1080p_math</link>
	<description>The Weblog of Erik J. Barzeski</description>
	<lastBuildDate>Tue, 07 Feb 2012 16:40:07 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.3.1</generator>
	<item>
		<title>By: Luposian</title>
		<link>http://nslog.com/2006/11/18/1080p_math#comment-44277</link>
		<dc:creator>Luposian</dc:creator>
		<pubDate>Sat, 10 Nov 2007 18:05:46 +0000</pubDate>
		<guid isPermaLink="false">http://nslog.com/2006/11/18/1080p_math/#comment-44277</guid>
		<description>An even simpler way of &quot;doing the math&quot;:

*1080p Uncompressed Video Bandwidth*

1920x1080 resolution = 2,073,600 pixels

2,073,600 pixels @ 24bpp = 49,766,400 bits (49Mbits)

49,766,400 bits / 8Mbits (8Mbits per Megabyte) = 6,220,800 bytes (6.2Mbytes)

So, 6.2Mbytes per frame.

6,220,800 bytes x 30 fps = 186,624,000 bytes/sec (187Mbytes/sec)
6,220,800 bytes x 60 fps = 373,248,000 bytes/sec (373Mbytes/sec)</description>
		<content:encoded><![CDATA[<p>An even simpler way of "doing the math":</p>
<p>*1080p Uncompressed Video Bandwidth*</p>
<p>1920x1080 resolution = 2,073,600 pixels</p>
<p>2,073,600 pixels @ 24bpp = 49,766,400 bits (49Mbits)</p>
<p>49,766,400 bits / 8Mbits (8Mbits per Megabyte) = 6,220,800 bytes (6.2Mbytes)</p>
<p>So, 6.2Mbytes per frame.</p>
<p>6,220,800 bytes x 30 fps = 186,624,000 bytes/sec (187Mbytes/sec)<br />
6,220,800 bytes x 60 fps = 373,248,000 bytes/sec (373Mbytes/sec)</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Erik J. Barzeski</title>
		<link>http://nslog.com/2006/11/18/1080p_math#comment-24077</link>
		<dc:creator>Erik J. Barzeski</dc:creator>
		<pubDate>Sun, 19 Nov 2006 23:23:23 +0000</pubDate>
		<guid isPermaLink="false">http://nslog.com/2006/11/18/1080p_math/#comment-24077</guid>
		<description>[quote comment=&quot;24031&quot;]I believe only the &#039;i&#039; specs go up to 60fps. 1080p only goes up to 30fps. Recalc in order.

Reference &lt;a href=&quot;http://en.wikipedia.org/wiki/1080p&quot;&gt;here&lt;/a&gt;.[/quote]

From that same source:

&lt;blockquote&gt;&lt;p&gt;If the standard MPEG-2 compression is used, versions with higher frame rate such as 1080p50 and 1080p60 could only be sent over higher-bandwidth channels; to send these over normal-bandwidth channels, a more modern codec such as the H.264/MPEG-4 AVC codec must be used. Higher frame rates such as 1080p50 and 1080p60 are foreseen as the future broadcasting standard for production&lt;/p&gt;&lt;/blockquote&gt;

No new math needed. Simply changing to 48-bit color from 24-bit and moving from 60 FPS to 30 keeps the results the same. Otherwise, divide or multiply by two.</description>
		<content:encoded><![CDATA[<p class="quote_header"><a  href="http://nslog.com/2006/11/18/1080p_math#comment-24031">JW said</a> on November 19, 2006:</p>
<blockquote cite="http://nslog.com/2006/11/18/1080p_math#comment-24031"><p>
I believe only the 'i' specs go up to 60fps. 1080p only goes up to 30fps. Recalc in order.</p>
<p>Reference <a  href="http://en.wikipedia.org/wiki/1080p">here</a>.</p>
</blockquote>
<p>From that same source:</p>
<blockquote><p>If the standard MPEG-2 compression is used, versions with higher frame rate such as 1080p50 and 1080p60 could only be sent over higher-bandwidth channels; to send these over normal-bandwidth channels, a more modern codec such as the H.264/MPEG-4 AVC codec must be used. Higher frame rates such as 1080p50 and 1080p60 are foreseen as the future broadcasting standard for production</p>
</blockquote>
<p>No new math needed. Simply changing to 48-bit color from 24-bit and moving from 60 FPS to 30 keeps the results the same. Otherwise, divide or multiply by two.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: JW</title>
		<link>http://nslog.com/2006/11/18/1080p_math#comment-24031</link>
		<dc:creator>JW</dc:creator>
		<pubDate>Sun, 19 Nov 2006 16:20:08 +0000</pubDate>
		<guid isPermaLink="false">http://nslog.com/2006/11/18/1080p_math/#comment-24031</guid>
		<description>I believe only the &#039;i&#039; specs go up to 60fps. 1080p only goes up to 30fps. Recalc in order.

Reference &lt;a href=&quot;http://en.wikipedia.org/wiki/1080p&quot;&gt;here&lt;/a&gt;.</description>
		<content:encoded><![CDATA[<p>I believe only the 'i' specs go up to 60fps. 1080p only goes up to 30fps. Recalc in order.</p>
<p>Reference <a  href="http://en.wikipedia.org/wiki/1080p">here</a>.</p>
]]></content:encoded>
	</item>
</channel>
</rss>

