FFmpeg

May, 2020

5 May
New Five-Star Review for FFmpeg Book

One thing that never gets old is a five-star review on Amazon. I just received another one for my book, Learn to Produce Video with FFmpeg: In Thirty Minutes or Less (2018 Edition), which is available on Amazon ($34.95) and for PDF download ($29.95). In this review from a verified …

17 April
Tuning for Metrics: What About VMAF and VP9?

If you’re comparing codecs with video quality metrics, you should consider tuning for that metric. However, x264 and x265 don’t have a VMAF tuning option. According to my analysis, it appears that tuning for PSNR is the best option and one you should strongly consider. When working with VP9, there’s …
9 April
Encoding VP9 in FFmpeg: An Update

This is a long post only of interest to those attempting to optimize their VP9 encodes. The three key takeaways are 1) use the command script shown on the bottom of the page, 2) a speed setting of 2 offers the optimal quality/performance tradeoff, and 3) the row-mt setting improves …
3 April
VMAF is Hackable: What Now?

Just a quick note to let you know about some recent findings relating to the Netflix VMAF metric. By way of background, VMAF launched in June 2016 as the metric that powered Netflix’s per-title encoding engine, replacing PSNR. The fact that Netflix created and used VMAF gave the metric tremendous …

9 March
Lesson of the Week: Computing VMAF with FFmpeg

This lesson teaches you how to compute VMAF with FFmpeg. It includes a download link to a specially compiled version of FFmpeg that can compute VMAF and to a zipped file that contains the batch files and input/output files shown in the lesson. I’m adding it as a lesson to …

23 January
The Ten Most Popular Articles from 2019

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 …
21 January
Using a Simple Wildcard Command in FFmpeg

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 …

8 November
Discover Six FFmpeg Commands You Can’t Live Without

This blog identifies six incredibly useful FFmpeg commands for transmuxing, extracting audio/video, converting to YUV/Y4M, and scaling to different resolutions. All commands are included in my book, Learn to Produce Videos with FFmpeg In 30 Minutes or Less ($34.95), and course, FFmpeg for Adaptive Bitrate Production ($29.95) (which includes a PDF …

21 October
An FFmpeg Script to Render and Package a Complete HLS Presentation

So, the object of the exercise is a single FFmpeg script that encodes your files and creates the necessary master and media playlists. I took an initial stab here, but wound up with a script, “as ugly as someone else’s baby, particularly the need to duplicate the input file four …

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