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

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'...

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 tran...

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 ...

Technical Brief: Switch from CBR to VBR to Improve Overall Quality and Avoid Transient Quality Issues

This article explores the differences between constant bitrate encoding (CBR) and variable bitrate encoding (VBR) and recommends that producers still using CBR should switch to 110% constrained VBR to improve overall quality and avoid transient quality issues with CBR. 

Five Signs Your Encoding Ladder May Be Obsolete

Your encoding ladder is the set of encoding parameters that you use to create the various files that you deliver adaptively to your web viewers. These encoding parameters can live in your on-premise encoder, in your cloud encoder, or in your online video platform (OVP). This article describes five signs that indicate that you may need to revisit your encoding ladder. 

Editing Technique: Restoring A/V Sync in Premiere Pro

Executive Summary: A common problem with footage created using iPhones, screencam tools, Wirecast, and Skype is a loss of A/V sync when importing the video into Premiere Pro. This video tutorial presents a simple fix using Handbrake. You can read a t...

Encoding Brief: Phase Out Low Quality Streams in Your Encoding Ladder

Executive Summary: Now might be the time to consider phasing out the lowest quality streams in your encoding ladder to reduce encoding and storage costs. Check your server logs to determine consumption of these streams before doing so.  Overview an...

Encoding Brief: The Benefit of B-frames

Executive Summary: B-frames increase compression efficiency, particularly at lower bitrates. However, not all video encoders deliver the requested number of B-frames when encoding using default parameters. Telestream Switch is a software program that...

Preliminary Survey Results - CBR, VBR and Capped CRF - $100 Amazon Gift Card Incentive

On January 13th, 2016, I launched a survey to determine the bitrate control techniques most commonly used by streaming producers. Some preliminary results are in, but the number of respondents is too small to draw any conclusions. I wanted to publis...

Survey: CBR, VBR, or Other for ABR Streaming

The recommended bit rate control technique for VOD files produced for adaptive streaming is one of the most fundamental decisions encoding professionals make, but in my view also one of the most confusing. If you scan the white papers on the topic, m...