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Choosing the Optimal Segment Duration

SummaryWhen choosing an HLS or DASH segment duration for VOD video, the nature of the server/player connection is critical. For persistent connections, a segment size of two-three seconds produces good quality and optimal system throughput. For non-persistent connections, a segment size of six seconds produces the best overall throughput. With live video, if latency is ...Read more

By | 2017-02-23T00:47:34+00:00 August 4th, 2016|Blogs|Comments Off on Choosing the Optimal Segment Duration

HP Takes Z240 to 4.2 GHz; Makes Entire Workstation Line More Mac Friendly

One of the reasons I favor HP workstations is because HP practices the Japanese art of kaizen, or continuous small improvements. A great example is the recent update to HP’s entry level desktop tower, the Z240 (on the left, click to see full rez picture), which has been upgraded to accept CPUs running at up ...Read more

By | 2017-02-23T00:48:17+00:00 July 30th, 2016|Blogs|Comments Off on HP Takes Z240 to 4.2 GHz; Makes Entire Workstation Line More Mac Friendly

Per-Title Encoding: It’s Everywhere!

Netflix started the per-title encode optimization revolution in December 2015, and now per-title encoding is showing up in more and more places. Why? Because it improves the quality of hard-to-encode videos, and saves bandwidth costs on easier-to-encode videos. If per-title optimization is not available in your encoder or encoding service, it's time to start demanding ...Read more

By | 2017-02-23T00:48:49+00:00 July 28th, 2016|Blogs|Comments Off on Per-Title Encoding: It’s Everywhere!

How to Build Your Encoding Ladder, Bitrates and Resolution

Stephen Nathans-Kelly, a video producer at Streaming Media Magazine, is carving conference videos into short useful segments. Here are the first two videos on building your encoding ladder from my talk on how to use objective quality metrics you can watch in its entirety here, as well as download the handout. The first video covers ...Read more

By | 2017-02-23T00:48:12+00:00 June 25th, 2016|Blogs|Comments Off on How to Build Your Encoding Ladder, Bitrates and Resolution

Book Excerpt: VBV Buffer Explained

One of the topics I'm addressing in my upcoming book is the VBR rate control model, a very complicated concept. Here's the section in the book, which I'm making available for comments, corrections, and clarifications. I'm pretty sure the technical details about how the model works is correct, but I'm guessing the description and definition ...Read more

By | 2017-02-23T00:47:29+00:00 May 21st, 2016|Blogs|Comments Off on Book Excerpt: VBV Buffer Explained

The Four Pillars of Video Encoding

 Figure 1. The four critical aspects to consider when encoding a file.Executive Summary: While video quality is always top of mind, consider deliverability, compatibility, and playability before finalizing your encoding presets. Too often we look at video encoding with a single point of focus; achieving the best possible quality for the lowest possible data rate. However, ...Read more

By | 2017-02-23T00:49:16+00:00 May 15th, 2016|Blogs|Comments Off on The Four Pillars of Video Encoding

Encoding Brief: Apple Releases HLS Authoring Specification for Apple TV

Executive Summary: In October 2015, Apple released a  document entitled HLS Authoring Specifications for Apple TV (HLS stands for HTTP Live Streaming, the adaptive bit rate technology used to deliver video to Apple TV and other iOS devices). If you're producing for Apple TV, and aren't aware of these specs, you should review them immediately. ...Read more

By | 2017-02-23T00:47:46+00:00 March 30th, 2016|Blogs|Comments Off on Encoding Brief: Apple Releases HLS Authoring Specification for Apple TV

Netflix Admits to Throttling AT&T and Verizon Cellular Movies

Last week, Netflix admitted that they artificially throttle the data rate of videos transmitted over AT&T and Verizon cellular networks to limit bandwidth consumption and the associated overage charges. Netflix doesn't throttle video streams transmitted on other cellular networks like T-Mobile and Sprint that don’t charge for overages. The story was broken by the Wall ...Read more

By | 2017-02-23T00:48:38+00:00 March 29th, 2016|Blogs|Comments Off on Netflix Admits to Throttling AT&T and Verizon Cellular Movies

Webinar: Simplifying Encoder Purchase and Configuration Decisions with Real Time Quality Metrics

I'm participating in a webinar with IneoQuest on Thursday, March 31 at 2:00 PM EST as part of their launch of a new product with live, non-referential quality metrics. The bottom line is that if you're comparing real-time encoders to make a purchase decision, or configuring live encoders you already have, you can gauge the ...Read more

By | 2017-02-23T00:49:42+00:00 March 16th, 2016|Blogs|Comments Off on Webinar: Simplifying Encoder Purchase and Configuration Decisions with Real Time Quality Metrics

Webinar: Simplifying Encoder Purchase and Configuration Decisions with Real Time Quality Metrics

I'm participating in a webinar with IneoQuest on Thursday, March 31 at 2:00 PM EST as part of their launch of a new product with live, non-referential quality metrics. The bottom line is that if you're comparing real-time encoders to make a purchase decision, or configuring live encoders you already have, you can gauge the ...Read more

By | 2017-02-23T00:49:08+00:00 March 16th, 2016|Blogs|Comments Off on Webinar: Simplifying Encoder Purchase and Configuration Decisions with Real Time Quality Metrics