HEVC/H.265 in 2021

1 minute read

The HEVC/H.265 standard was formally published by the ITU-T on June 7, 2013, and by the ISO/IEC on November 25, 2013. Now is a better time than ever to use this codec. Why?

Same size, more bitrate/higher resolution. Or same bitrate/resolution, smaller size

Although the storage is cheaper and internet speed is faster year after year, we use more and more videos in Bible teaching and conversation. HEVC/H.265 allows for further reduced file size, which means reduced required bandwidth. Smaller size or better quality videos are good for senders and receivers.

Smart use of macroblocks

Instead of 16×16 macroblocks like in AVC/H.264 and VP9, HEVC/H.265 divides pictures into “coding tree blocks” (CTBs). Each CTB can be split recursively in a quad-tree structure of 64x64, 32×32, 16×16, and 8×8 sub-regions, called coding units (CUs). Multi-size CTB works perfectly for sign language videos as many areas in the video could be unchanged for minutes.

https://sonnati.wordpress.com/2014/06/20/h265-part-i-technical-overview/

Hardware requirements

  • Intel 6th generation “Skylake” or newer CPUs (2015)
  • AMD 6th generation “Carrizo” or newer APUs (2015)
  • NVIDIA GeForce GTX 950, 960, or newer graphics cards (2015)
  • AMD Radeon R9 Fury, R9 Fury X, R9 Nano, or newer graphics cards (2015)
  • Qualcomm Snapdragon 805, 610, 410, 208 or newer (2014/2015)
  • Apple A8 or newer (2014)
  • Samsung Exynos 5 Octa 5430 or newer (2014)
  • Some MediaTek SoCs from mid-2014 onwards1

Operating system requirements

  • macOS High Sierra, iOS 11, tvOS 11 or newer (2017)
  • Android 5.0 or newer (2014)
  • Windows 10 1709 or newer (2017)23

JW Library 12.5.x are the last versions to support iOS 9, 10, and 11. To keep JW Library and JW Library Sign Language up-to-date, the users should have at least Windows 10 19H1, Android 6.0, and iOS 12. Those OSes are all supporting HEVC/H.265 encoding.

Yes. We are ready for HEVC/H.265.

To decode videos into HEVC/H.265, you can use FFMPEG4, Handbrake, or Apple Compressor5.


  1. https://www.techspot.com/article/1131-HEVC/H.265-h256-enconding-playback/ 

  2. Windows release HEVC/H.265 support as a separate, paid download from the Microsoft Store. 

  3. To get the HEVC/H.265 video extension for free, copy and paste this link to the browser ms-windows-store://pdp/?ProductId=9n4wgh0z6vhq

  4. My suggestion is ffmpeg -i input -c:v libx265 -preset fast -crf 23 -tag:v hvc1 -c:a eac3 output

  5. Convert video to HEVC/H.265 using Apple Compressor on Apple Silicon macs is super duper fast 😉.