The Voronoi omnidirectional video metrics have the best correlation between test scores and subjective ratings than all measured 2D and 3D metrics according to its inventors. It’s an open-source metric you can download and learn to use below. I’ll be discussing the Voronoi metric in my upcoming talk on 2D and 3D video quality metrics…
Author’s note: When this post was written, the Zeranoe FFmpeg Windows download didn’t include VMAF, so you had to either download this version or compile your own. Now the Zeranoe version does include VMAF support; all you need to do is download the models and run the correct command strings. To learn how to do…
FFMPEG is a free command-line utility that serves as the engine for most of the largest cloud encoding farms in the world, public and private. But it also performs many simple and essential tasks that crop up in a studio or encoding facility, particularly if you do performance or benchmark testing. In this article, I’ll…
At its most basic level, streaming media is the delivery of audio and video files from a server to a client over the internet or a cellular data network. The first streaming audio was delivered in 1995, while the first streaming video followed two years later; you can read more about the early history of…
I’m pulling together some materials for my pre-conference session at Streaming Media West (November 18-20 in Los Angeles) entitled Objective Quality Metrics 2D & 3D: What They Are, How To Compute Them, & How To Use Them. One lesson talks about “tuning” when encoding files to be measured with metrics like PSNR, VMAF, and SSIM.…
According to Bitmovin’s “Video Developer Report 2019,” latency was a concern of 54% of all its survey participants. Digging into the numbers, subsequent questions revealed that almost 50% of survey participants planned to implement a low-latency technology over the next 1–2 years, with over 50% seeking latency of under 5 seconds and 30% seeking latency…
I’m pulling together some materials for my pre-conference session at Streaming Media West (November 18-20 in Los Angeles) entitled Introduction to ABR Production and Delivery. One lesson shows the technology ecosystem needed to implement OTT streaming and identifies key vendors for each function. I figured I’d throw these slides out there to get comments on…
Reviewer Ian Kennedy recently reviewed Learn to Produce Video with FFmpeg on Amazon, and he hit the nail on the head in his five-star review, saying: Who this book is for: 1) The decision maker who may be skeptical about using FFmpeg in a production environment compared to a turn-key commercial solution. 2) The video-adjacent…
So, there I was downloading videos from YouTube to include in a PowerPoint for a training course I was producing. Unfortunately, my download tool, wondershare’s excellent video converter, downloaded separate audio and video streams, the video in an MP4 wrapper and the audio as an MP3 file. So I had to mux the two to…
Streaming Media West is coming up next month in the City of Los Angeles (as opposed to Huntington Beach where it’s been the last few years). Specifically, it’s at the Westin Bonaventure on November 19-20 (Tuesday/Wednesday) with pre-conference sessions on Monday the 18th. I’ll be my normal busy self with two pre-conference sessions and several…