In a blog full of wonky compression articles, this could be the wonkiest article of all. If you’re not using capped CRF encoding, or considering the same, it’s almost certainly not of interest. If you are using capped CRF encoding (for constant rate factor), however, you almost certainly will find it interesting and perhaps even illuminating. A quick background note. …

It’s always good to review which articles readers found valuable over the past year to help focus on producing similar content in the future. By publishing the top ten, hopefully, those reading this article will see some articles they might find useful. So, without further ado, here were the top ten articles from the Streaming Learning Center blog in 2019. …

Author’s note: This is a very simple automation technique for FFmpeg beginners. I’m sure there are much more efficient ways to script this project, but this represents my baby steps in FFmpeg automation. I recently started a consulting project that involved encoding multiple files to multiple CRF values to create rate-distortion curves and BD-Rate computations. I’m testing three codecs with …

Nine members of the MPEG LA HEVC patent pool are leaving the pool and now will be included within the HEVC Advance HEVC pool. This changes the balance of power between these two pools, though licensees who signed with the MPEG LA pool before the departures will continue to have coverage for these patents going forward. The MPEG LA pool, which has more …

Any book author will tell you that while the revenue is nice, hearing from readers that find your book useful is even better. In this regard, I’m excited to blog about the following new five-star review of my book Encoding by the Numbers. What I tried to do in Encoding by the Numbers was to tie all configuration decisions to …

This article defines open and closed GOPs, identifies why closed GOPs are better, and details how to produce closed GOPs in FFmpeg with x264 and x265. The level of testing and analysis detailed here is consistent with the instruction in my book, Learn to Produce Videos with FFmpeg In 30 Minutes or Less ($34.95), and my course, FFmpeg for Adaptive …

On September 11, 2019, Streaming Media Magazine published an article entitled Hardware-Based Transcoding Solutions Roundup: Testing Performance, that compared various H.264 and HEVC encoders using objective and subjective testing. The HEVC encoders tested included Intel’s SVT (Scalable Video Technology)-HEVC, a software-based codec; NGCodec’s FPGA-based HEVC encoder (now owned by Xilinx) and x265 using the medium and veryfast presets. After the …

Recently, video quality metrics have gotten a lot of hate, primarily from codec vendors. For example, yesterday on LinkedIn, respected Beamr CTO Dror Gill wrote, “everyone agrees that subjective (human) testing is the only accurate way to measure true perceptual quality.” After I pointed out industry support for using video quality metrics, Gill graciously changed this to “everyone agrees that …

I know Thanksgiving was a couple of weeks ago, but as we close out the year, I want to say thank you to the three suppliers of codec-related usage data—Bitmovin, Encoding.com, and LiveU—and summarize the data they supplied us in 2019. This will put the stamp on what we know this year and set the stage for 2020. I’ll discuss …

My Streaming Media session on using video quality metrics is now available for replay immediately below. You can download the handout here. Here’s the session description. T101. HOW-TO: Fine-Tuning Your Encoding With Objective Quality Metrics Tuesday, November 19: 10:30 a.m. – 11:15 a.m. Choosing the number of streams in an adaptive group and configuring them is usually a subjective, touchy-feely …