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		<title><![CDATA[Ensemble Designs Forum]]></title>
		<link>http://forum.ensembledesigns.com/</link>
		<description><![CDATA[The most recent topics at Ensemble Designs Forum.]]></description>
		<lastBuildDate>Thu, 05 May 2011 17:40:04 +0000</lastBuildDate>
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			<title><![CDATA[TBC for HD]]></title>
			<link>http://forum.ensembledesigns.com/topic/66/tbc-for-hd/new/posts/</link>
			<description><![CDATA[Hi there,

I'm trying to use an unlocked HD/Sdi video feed as part of my workflow.  Without tying up any of my other playout kit, is there a way I can sync the feed before it gets to my downstream keyer.  If I was working with an analogue feed there would be any number of TBCs to choose from, but I can't seem to spot any product that can take in HD/Sdi and tri-level sync and output a timed HD/SDi feed.

Any help would be appreciated.

Thanks,

Thom]]></description>
			<author><![CDATA[dummy@example.com (mondae)]]></author>
			<pubDate>Thu, 05 May 2011 17:40:04 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/66/tbc-for-hd/new/posts/</guid>
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			<title><![CDATA[3D TV is Coming…]]></title>
			<link>http://forum.ensembledesigns.com/topic/36/3d-tv-is-coming/new/posts/</link>
			<description><![CDATA[Great overview from Arstechnica about the 3D display technologies show at CES:

[url]http://arstechnica.com/gadgets/news/2010/01/3d-tv-is-coming-ready-or-not.ars[/url]

It's clear that 3D is the what the TV manufacturers are hoping to use to drive the next round of TV sales (after everyone has a HDTV). The article discusses the subjective differences between the different approaches shown at CES, and makes some predictions about what market penetration for this new technology is likely to be.]]></description>
			<author><![CDATA[dummy@example.com (Jeremy)]]></author>
			<pubDate>Mon, 11 Jan 2010 05:58:50 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/36/3d-tv-is-coming/new/posts/</guid>
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			<title><![CDATA[Closed Captions in the Digital Era]]></title>
			<link>http://forum.ensembledesigns.com/topic/33/closed-captions-in-the-digital-era/new/posts/</link>
			<description><![CDATA[At our Closed Caption Event and SMPTE meeting on 21 Oct 09, Jack Davis, Director of Engineering at KTXL-TV Fox 40 in Sacramento discussed closed caption compliance for broadcasters and exactly how Fox 40 has implemented closed captioning technology. In addition to his engineering responsibilities at the station, Davis fields calls from viewers who have trouble with their captions at home. Often the user settings in the TV set are the culprit. For example, if Spanish captions are displaying instead of English, or vice-versa, the TV set may need to be changed from CC1 (service1) to CC2 (service 2) in order to display the desired language.]]></description>
			<author><![CDATA[dummy@example.com (cindy)]]></author>
			<pubDate>Thu, 22 Oct 2009 23:25:05 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/33/closed-captions-in-the-digital-era/new/posts/</guid>
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			<title><![CDATA[How are captions actually created, what is the process?]]></title>
			<link>http://forum.ensembledesigns.com/topic/32/how-are-captions-actually-created-what-is-the-process/new/posts/</link>
			<description><![CDATA[At our Closed Caption Event and SMPTE meeting on 21 Oct 09, many interesting questions were posed. How are captions actually created, what is the process? What decisions does a caption editor make?

There are two kinds of captioning: offline and realtime. Offline captioning is used for prerecorded programming. Realtime caption writers caption for live events (e.g. sports, Presidential addresses) and need to have skills similar to court reporters.

Emily Bell of CaptionMax demonstrated offline captioning, the kind used for shows like 30 Rock and Law and Order. To create caption text and timing the caption writer watches a movie or program and types in dialog and descriptions of sound effects and music. Caption writers also do lots of research on every topic imaginable, often needing to look up the correct spelling of proper nouns and the exact wording of idioms.

The caption writers at CaptionMax ([url]http://captionmax.com/[/url]) use SoftTel Swift software, one of several caption creation software programs made for professional applications. After entering all of the captions and description data, a closed caption data file is exported. The caption creation and export process is the same for SD (standard definition) and HD (high definition) applications.

The data file and the TV program are both sent to an encoder where they are combined. Caption services businesses or post production houses handle the encoding process for most television networks.

CEA-708 closed caption data is carried as ancillary data in an HD (high-definition) video signal while CEA-608 closed caption data is carried on line 21 of an SD (standard definition) video signal.

The caption encoder software takes care of the CEA-608 or CEA-708 closed caption requirements as needed for outputting SD or HD. The output of the encoder is generally recorded onto video tape and is delivered to the network.

More on the CEA-708 standard at: [url]http://www.ce.org/Standards/browseByCommittee_2525.asp[/url]]]></description>
			<author><![CDATA[dummy@example.com (cindy)]]></author>
			<pubDate>Thu, 22 Oct 2009 23:23:06 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/32/how-are-captions-actually-created-what-is-the-process/new/posts/</guid>
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			<title><![CDATA[Why do I see green sparkles in my video?]]></title>
			<link>http://forum.ensembledesigns.com/topic/11/why-do-i-see-green-sparkles-in-my-video/new/posts/</link>
			<description><![CDATA[I recently fielded a call from a CE at a TV station. He said, "Why do I see green sparkles in my video?"

I checked in with my engineering colleagues and they had some good info. In the case of a bad connector, part of the signal is not getting through to the input. When the connector is bad and the deserialiser can't detect TRS, the deserializer mutes the output to 0. It can't build black because it doesn't know the relationship between Y, Cr, and Cb so it just outputs 0s. 0 is the default output when no signal is detected. Then you would see green.

Since green and magenta are opposite from each other on the vector scope, if you go past green and wrap around, you get to magenta, and vice-versa. Magenta's value is close to (just short of) 3FF, green's value is close to (just bit bit more than) zero.

0 is a special number limited to TRS and the ancillary pre-amble where TRS is 3FF | 000 | 000 and pre-amble is 000 | 3FF | 3FF. Anytime our gear sees a 0 that is not TRS or pre-amble we turn it into a 4 (an 8-bit 1). The closest legal signal to 0 is 4. A value of 4 would look like green on the monitor.]]></description>
			<author><![CDATA[dummy@example.com (PL)]]></author>
			<pubDate>Tue, 28 Jul 2009 20:32:58 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/11/why-do-i-see-green-sparkles-in-my-video/new/posts/</guid>
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			<title><![CDATA[Test Pattern Pillow]]></title>
			<link>http://forum.ensembledesigns.com/topic/13/test-pattern-pillow/new/posts/</link>
			<description><![CDATA[I saw this a few days ago—it's a test pattern pillow. Perfect for that couch you've got in master control, or wherever.

[img]http://cache.gawker.com/assets/images/4/2009/03/504x_pillownew2.jpg[/img]

[url]http://gizmodo.com/5162625/color-tv-would-not-exist-without-the-test-pattern-pillow[/url]]]></description>
			<author><![CDATA[dummy@example.com (Jeremy)]]></author>
			<pubDate>Wed, 13 May 2009 17:25:25 +0000</pubDate>
			<guid>http://forum.ensembledesigns.com/topic/13/test-pattern-pillow/new/posts/</guid>
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