November, 2017

  • 8 November

    AV1 No Shows At Streaming Media West; Better in Stockholm?

    I’ve been bullish on AV1 since the start, but I’m starting to think the codec is both farther away and less useful than I initially thought. Here’s what’s happening. For Streaming Media East in June 2017, an AV1 member encoded four videos, totaling about 8.5 minutes, to five data rates …

  • 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

    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

  • 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

  • 21 August

    RealNetworks Launches New Video Codec

    RealNetworks is one of the most storied names in video streaming-if you’re on the wrong side of 40. If you’re younger, than odds are you never heard of the company. On Wednesday, August 16, RealNetworks announced an agreement to deploy Advanced RealMedia HD (RMHD) Technology in China. What do we …

  • 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, 2015

  • 27 January

    Beamr Technology Assessment

    I recently finished evaluating Beamr Video. The evaluation included analyzing the quality of the resulting clips using objective measures such as PSNR, SSIM and VQM, and conducting extensive viewing of the optimized clips, assessing their subjective quality compared to the original clips. Following this evaluation, I concluded that “for 99.99% …