Jan Ozer

 

Jan has worked in digital video since 1990, and is the author of over 20 books related to video technolgy, including Producing Streaming Video for Multiple Screen Delivery and the Premiere Pro CC: Visual QuickStart Guide. Jan currently writes for Streaming Media Magazine and Streaming Media Producer, and consults widely on streaming media-related topics.

Content Posted by Jan Ozer

Everything You Ever Wanted to Know About IDR Frames but Were Afraid to Ask

Depending upon your encoding tool, you may have access to a checkbox or number box that controls something called IDR frames. What are these creatures and what is their significance? More imporantantly, what's the optimal setting? Well, let's just say that if you're seeing anything like the random blockiness in the picture below when you drag the playhead back and forth within your video, (click the figure to see it at full resolution in a separate window), you're probably using the wrong value.

IDR-ugly.jpg

Read on and I'll tell you why and identify the correct value.

HLS Presets in Compressor Defective: Download New Presets Here

I was noodling around in Compressor 4's presets, and noticed the presets for HTTP Live Streaming. "Hmmm," I thought, "I wonder if Apple chunks the files and creates the required manifest files?" (Didn't in my tests). Then I pondered, "I wonder if Apple's presets match their recommendations in Technical Note TN2224?" So, I opened all the presets, recorded their encoding parameters and compared them to the Tech Note. That's when things got interesting and I found (what I think are) errors in two of the presets.

Cool Flash Widget at the Economist (How far behind is Mitt Romney?)

Sometimes I get so caught up in Flash video that I forget that Flash does many other things, from serving as the environment for the WeVideo editor to enabling sites like the Economist to present interactive data relating to the upcoming presidential...

HP EliteBook 8760w: A Notebook for Demanding Video Producers

Few things in life are more fun than playing with the latest, greatest notebook computer. For the last few months, I've had the pleasure of working with HP's EliteBook 8760w, which is the most powerful notebook I've ever tested. It's a highly potent ...

The Secret to Go Daddy's Video Success...

Danica.jpg...is NOT how they encode their video. But, they do a lot of other things right with their streaming video as you can read below. 

GoDaddy.com aggressively advertises videos on television to convince you to visit their web site. With celebrities Danica Patrick and Jillian Michaels on board, it’s a pretty good strategy. Of course, when most viewers see these TV commercials, they probably wonder how it ends, and how close the two beauties come to baring all. Me? I wonder how Go Daddy is encoding their video and how social media-savvy they are when it comes to their player.

Interested in online video editing? Check out my review of WeVideo

Here's the introduction. The referenced video on YouTube details the 28 hours I spent in Manhattan with my girlies last September, including our visit to the Empire State Building, Times Square and the Today Show, plus a clip of my daughter subway su...

MPEG Ratifies Draft Standard for DASH

DASH stands for Dynamic Adaptive Streaming over HTTP, and it's MPEG spec that was unanimously ratified on December 2, 2011. What is DASH? As I open in my article What is MPEG DASH for Streaming Media Magazine: MPEG DASH (Dynamic Adaptive Streaming ov...

Average US Broadcasters Streaming at 837 kbps Total Data Rate

I track the data rate and video configuration used by broadcast sites since they indicate the types of streams that their mass market audiences can retrieve and play, and also the quality of streams that web video consumers are used to viewing. In my latest survey, the average video configuration was very close to 640x360, with a combined audio/video data rate of 837 kbps (758 kbps video, 79 kbps audio). This computes to an average bits per pixel value of .115. If videos posted on your site are lower than these figures, you're probably being unnecessarily conservative.

To view the groupings and individual sites used in my analysis, click over to the main story.

ESPN Chooses Elemental for On-Demand Streaming

I don't spend a lot of time in the big-iron encoding space, but I was pleasantly surprised a few weeks ago when I saw Elemental Technologies, who sells GPU-based hardware encoders, written about in BusinessWeek. So when the company approached Streami...

Configuring Your Streaming Video (for Newbies)

Configuring your video streams properly requires an understanding of three concepts; data rate, resolution and frame rate. In this article, I'll define these terms and discuss the influences that impact your choices for each parameter. Then, at the end, I'll walk you through a decision matrix designed to help you choose the optimal parameters for your streaming video.

While this is designed for newbies, the concepts discussed will be valuable to all streaming producers, particularly the information regarding the average bitrates used by broadcast, business-to-consumer and business-to-business sites. Sound interesting? Well then, click over the main article to get started.