Lesson of the Week: Why BD-Rate is a Poor Predictor of Real-World Bandwidth Savings

Jan Ozer April 24, 2021 Encoding, Metrics, Video lessons Leave a comment 1,564 Views

BD-Rate computations are a valuable metric when comparing theoretical codec performance. But just because they prove that HEVC is 40% more efficient than H.264 doesn’t mean that you’ll save 40% of your bandwidth if you switch to HEVC.

This 6-minute video lesson explains why and suggests a better alternative for estimating real-world benefits. I include a link to the presentation below.

For more on the courses mentioned in the video, click here for Streaming Media 101.

Click here for Computing and Using Video Quality Metrics.

Click here to download the presentation.

About Jan Ozer

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I help companies train new technical hires in streaming media-related positions; I also help companies optimize their codec selections and encoding stacks and evaluate new encoders and codecs. I am a contributing editor to Streaming Media Magazine, writing about codecs and encoding tools. I have written multiple authoritative books on video encoding, including Video Encoding by the Numbers: Eliminate the Guesswork from your Streaming Video (https://amzn.to/3kV6R1j) and Learn to Produce Video with FFmpeg: In Thirty Minutes or Less (https://amzn.to/3ZJih7e). I have multiple courses relating to streaming media production, all available at https://bit.ly/slc_courses. I currently work as www.netint.com as a Senior Director in Marketing.

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