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Archive for July, 2008

What is HD video? Even Mark Cuban gets it wrong

Posted by New Media Specialist July - 17 - 2008 - Thursday Comments Off

Tekzilla screen grab

Mark Cuban has lots of ideas. His best one was back in the late ’90s when he decided to create a webcasting business that was ultimately sold for millions of dollars to Yahoo! Cuban may well have another great idea to save Internet video, but I’ll leave commenting on his ideas to a possible future post. Mark should know something about HD video. He is the Chairman of HDNet, a cable television network that broadcasts exclusively in high definition (HD).

HDNet is one of the few networks that has original HD programming, and by that I mean an independent network broadcasting exclusively in HD. HDNet’s Dan Rather Reports is an example of original HD programming. Depending on who your cable provider is, you may or may not have HDNet available to you. Without getting into the sordid details about why, you likely will have either HDNet or a network known as Mojo available with your cable or satellite provider, or with fiber-optic systems such as Verizon’s FiOS, or AT&T’s U-verse.

So Mark Cuban started a business and is one of the leaders of a company that produces HD video. It is with that knowledge that makes this statement so confusing:

100pct (sic) of the internet video that you see offered on the net as HD, is not HD. Plain and simple.

He then offers the following definition (of sorts):

What is HD video ? HD Vidoe (sic) is video you can watch on a screen of ANY size and say…”that looks good, almost as good as it can get “.

My purpose here is not to picks nits, but if that is his definition of HD video, then by who’s standard do we define “looks good” and “as good as it can get”? Look, there are lots of sites, services, and networks trying to distribute HD video on the Internet, or at least what they self-define as HD video. I should also point out that high definition video on the web is mostly a buzzword, and Cuban’s definition doesn’t help.

Here, let me define HD video. It is digital video that is represented by the minimum dimensions of 1280×720 pixels (720p). Now was that so hard? You can also take a look at the Wikipedia entry for high definition video for many more details. Having tendered those definitions, it should also be said that like all things digital, there is a quality factor that can affect how good HD video looks.  It is generally represented by what is known as bit rate. It is also something that most directly relates to the fudge factor that gets used on some supposed HD video sites. Again, the details start to get way too complicated in terms of what makes good (and bad) HD video, so let’s just stop before we hurt ourselves.

What makes Cuban so wrong is that there are good, and successful, attempts at providing HD video through the web. The screen grab at the top of this post is from one of these Internet TV networks called Revision3. The show is called Tekzilla, and by every measurement that I know of it is high definition. The basic specs of the video are, 1280×720 pixels (again 720p), h.264 video codec, AAC audio. It’s video quality that I’ve raved about before.

There’s a great way to check out more HD content by using software called Miro. It is similar to iTunes, but geared toward online video, and it provides good quality HD programming. If you check out their Miro Guide, you can check out some of the HD choices. I use it on my home theater PC which is connected to my Pioneer Plasma and it looks good, almost as good as it can get. Oh, sorry. That definition is taken. So what’s with Cuban’s 100% not HD statement? Is it because it’s not Blu-ray quality? Well, it will be a while before we are downloading 20GB files to watch on our HDTVs. Is it because it isn’t the same quality as HDNet? Well, no, Tekzilla probably doesn’t use XDCAM HD (cameras that still sell for over $20,000). However, it looks as good as a lot of the broadcast HD content out there, because it not further compressed by the cable or satellite company. All of this technology (do I have to say it?) is constantly improving. Codecs are being developed that will surpass what we have today that will deliver higher quality at equivalent bit rates. Cuban’s standard sounds like something that we may never achieve, and when it comes down to the basic definition of HD video, he’s wrong.

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I need some AIR

Posted by New Media Specialist July - 8 - 2008 - Tuesday Comments Off

I thought about several ways to begin this post, and I was hoping the title wouldn’t scare people off thinking that I was going to vent. No, it’s not that kind of air. It’s actually Adobe’s AIR, or Adobe Integrated Runtime (yes, I’ll just use AIR from now on). AIR has actually been around for well over a year now. I first used it at the 2007 Faculty Academy here at UMW for a program called Twittercamp, which is a program that would aggregate “tweets” from Twitter and display them on a screen (preferably a large flat panel screen). Alan Levine and I have been using it for the conferences we’ve been involved in the past two years, including this year’s Faculty Academy and the NMC event in Princeton. AIR programs function like Flash programs do on the web, only you download them to your computer. You first need the Adobe AIR “runtime” program, then you can install and use all of the AIR apps you want, even use them simultaneously. There’s no need to open a web browser to use these programs.

The question for a while now has been is it worth downloading the AIR “player” and then installing the individual programs? Is there anything compelling out there to use? I can now say that it’s a definitive YES! The point of these programs is that they are small, and quickly installed. To use the programs, they require that you have a live connection to the Internet, but they function on the idea of working “in the cloud“. So after you get Adobe AIR installed on your computer, go install the following programs:

 

tweetdeck

TweetDeck - I’m getting the feeling that this is going to be the next “must have” program, next to using Twitter of course. TweetDeck is one of the many (thousands?) Twitter intermediaries that pull in Twitter posts (tweets) and display them in a unique way. It’s still in early beta (0.151b as of this writing), but it already has some uniquely great features. It allows you to get a handle on how tweets get viewed. TweetDeck sets up as many columns as you need to view your tweets how you want to. The first column is usually the “all tweets” column, but you can move the columns around. You can set up groups by picking individuals that you follow and giving that group a name. Then you see their tweets in another column. You can create another column that is a search term. I used the term “edupunk” and now I get a column that updates automatically with tweets that have the word edupunk in them. You can have still more columns with replies to you, or direct messages. A recent new feature is the ability to collapse the view to a single column. I expect great things from this program.

 

adobemediaplayer

Adobe Media Player - Now you might be saying, “who needs another media player?”, and you’re right. However, this is well done, and if you use Adobe software on a regular basis, there is enough Adobe content to make it worth it. Add to that clips from TV shows and some “HiDef” content, and it makes for a worthwhile download.

 

destroyflickr

Destroy Flickr - OK, I don’t get why there’s the hostile name because DF is all about a pretty interface for viewing Flickr photos. Photos just look better on a dark neutral grey background, as opposed to Flickr’s all too white web page. Again, it’s a quick install of an Adobe AIR program and you have the many viewing options, called canvases. It remembers where you have been and saves those views in a history, called workspaces. You also have control of uploading and downloading photos to and from your Flickr account.

If you want to check out other AIR applications go to freshAIRapps and see just what the potential for the AIR platform is. Note: Because of a current negotiation with Adobe of the use of AIR in their website’s domain, another location for the FreshAIRApps may be at Refreshingapps.com.

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About us

Welcome to the University of Mary Washington New Media Center. The UMWNMC is a sub-division of the Division of Teaching and Learning Technologies (DTLT), and as part of its mission, provides research, oversees development, and offers production assistance and consultation for new media approaches to supporting technology-enhanced and online learning at UMW.

The University of Mary Washington is a member of the New Media Consortium, which we joined in 2007. The NMC provides programs and services that foster the exploration of new media and new technologies. The NMC provides an annual Horizon Project that reports on the emerging technologies in education.

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