November, 2017

  • 3 November

    Download Per-Title Encoding Handout

    Here’s the description: download handout below: Per-title encoding techniques customize the encoding ladder to match the encoding complexity of the source, saving bandwidth on easy-to-compress videos and ensuring the quality of more complex footage. This session compares the efficiency, implementation issues, and costs of multiple commercially available and open-source alternatives, …

  • 2 November

    D103 – HOW TO: Building a More Robust Cloud Encoder With FFMPEG & More

    Here’s the video and description; download handout below. With the speed of technology today, one of the most important parts of the software is adaptability. By taking control of your own encoding and packaging, you can greatly reduce cost and maintain high adaptability and agility to meet your needs now …

  • 1 November

    W4: Encoding Live and VOD for HEVC/HLS

    Here’s the description; you can download the handout below. Apple’s support for HEVC in HLS is a ground-breaking event that opens up hundreds of millions of HEVC capable players. If supporting this spec is on your short-term development schedule, you’ll want to check out this workshop. The workshop starts by …

  • 1 November

    W2: Encoding 2017: Codecs & Packaging for PCs, Mobile, & OTT/STB/Smart TVs

    My first session at Streaming Media West. Here’s the description, you can download the handout below. As video resolutions increase and target playback platforms multiply, video producers must leave their H.264/HLS/HDS comfort zone and expand into HEVC, VP9, and MPEG-DASH. This workshop is divided into multiple segments by target platform …

September, 2017

  • 18 September

    Apple Updates HLS Authoring Spec for 4K and HDR

    HLS just got really complicated. On September 9, 2017, Apple updated their HLS authoring requirements to include HDR and 4K recommendations. The updated ladder is shown below. Here are some of the new/updated requirements for HEVC and HDR. There are more in the spec, but these are the ones I wanted to …

  • 4 September

    Finding the Just Noticeable Difference with Netflix VMAF

    VMAF stands for Video Multimethod Assessment Fusion, but all you really need to know is that it’s the video quality metric co-invented by Netflix to replace the Peak Signal to Noise Ratio (PSNR) that used to fuel the company’s per-title encoding function. In the image above, which is courtesy of Netflix, you …

August, 2017

  • 20 August

    Apple’s Bitrate Control Strategy: Do as I Do, Not as I Say

    Apple’s HLS Authoring Specifications for Apple Devices approves up to 200% constrained VBR but Apple’s actual encodes are more like 110-120% constrained. What Apple Says As you probably know, Apple recently made sweeping changes to their HLS recommendations, including changing from 110% constrained VBR for VOD in TN2224, to 200% …

  • 1 August

    How PSNR Compares to VMAF and SSIMplus

    As quality metrics go, PSNR is considered a blunt tool obsoleted by higher end metrics like Netflix’s VMAF or SSIMwave’s SSIMplus. That said, it’s accessible and understood, and has been used for years. Of course, none of that matters if it delivers misleading results. So that’s what I decided to test …

January, 2017

  • 17 January

    Choosing the Data Rate for your Mezzanine Files

    (Note: This article was amended to show the comparative results at 6 mbps) Summary (The MPD) As more and more producers move their encoding to the cloud, or distributing via OVPs or other service providers, the data rate for the mezzanine files is significant factor for upload time and bandwidth …

October, 2016

  • 24 October

    Cloud Pricing Survey Shows Hybrik Least Expensive Option By Far

    I recently finished a white paper comparing the pricing for a new cloud encoding service named Hybrik with multiple cloud providers, including Amazon Elastic Transcoder, Microsoft Azure, Bitmovin, encoding.com, Telestream Cloud, and Zencoder. The white-paper was sponsored by Hybrik, and you can download it below. By way of background, I ran all …