However, the coding coding efficiency of VP9 is slightly inferior to HEVC (see the detailed differences between VP9 and HEVC). Due to the change, libvpx-vp9 can save about 20–50% bitrate compared to libx264 at the same quality, being one of the dominant video codecs for 4320P higher resolution. The biggest improvement of VP9 is the 64圆4 maximum block size. VP9 (.webm), the successor to VP8, is an open-source and royalty-free codec from Google for HD/UHD streaming and braodcasting. It is anticipated that the codec will reach any platforms by 2020.
If the UHD TVs are incapable of dealing AV1, the 8K video file extension can hardly be adopted widely as 8K UHD resolution requires bigger screen. Plus, Apple devices seem to involve around HEVC instead of AV1. But currently, almost all the newer TVs, cameras, mobiles have HEVC built-in, not AV1. Netflix, Amazon, BBC also guarantee the anticipated spread of AV1 on the video streaming services.
Having Google in the Alliance means the easy adoption of AV1 among Android devices. However, with AMD, Intel and Nvidia all on the list of AOM, AV1 hardware acceleration won't be long (anticipated in 2020).ĪV1 is quite new. In other words, AV1 places high requirements on the hardware level. On the contrary, there is no GPU acceleration support for the 8K video format AV1, which is encoded and decoded on CPU. By offloading the HEVC processing to GPU, the whole process is accelerated without giving too much burden on CPU. HEVC is not a problem because of the support of HEVC hardware support. > AV1 or HEVC, Which is the Better Codec? Though the requirements are predicated to drop to 8-32 cores. Initial demonstrations indicated that 200 virtual CPU cores are required to encode and stream one AV1 video channel. And compared with HEVC, AV1 will see 3-5x computing energy for decoding and encoding. For example, AV1 outperforms VP9 by 17.1% in bit rate savings, which requires a huge amount of increase in computational complexity. Therefore, AV1 was designed to better handle higher resolution videos, being an ideal video codec supporting 8K UHD resolutions.Ĩk supported codecs require large amount of computing power due to their complicated algorithm to hold 7680x4320 pixels at smaller size. It's 30% more efficient than VP9 and 20% than HEVC. According to AOM, AV1 achieves gains of 50.3%, 46.2% and 34.0%, compared to x264 main profile, x264 high profile and libvpx-vp9, respectively.
More services & devices are catching on.ĪV1 (also known as AOMedia Video 1) is an open-source, royalty-free video format from the Alliance for Open Media, a group counts big names like Amazon, AMD, Facebook, Google, Intel, Microsoft and Netflix. In fact, HEVC H.265 is becoming ubiquitous on Android 5.0, iOS 11 mobiles, newer cameras.
However, to promote the adoption of this 8K video format, the patent pool has eliminated the royalty free for "subscription" and "title-by-title" content distribution and reduced the royalty rates. The royalty fee for HEVC is priced at 0.5% of content owner revenue. HEVC users have to pay royalty fees to HEVC Advance. AMD Radeon R9 Fury, R9 Fury X, R9 Nano, or newer graphics card AMD 6th generation "Carizzo" or newer APUs NVIDIA GeForce GTX 950, 960, or newer graphics cards Intel 6th generation "Skylake" or newer CPUs ** To utilize hardware acceleration for 8K HEVC video, you computer will need: Check how GPU acceleration speeds up HEVC processing.
The solution is to have a capable graphics card and software that supports HEVC hardware processing to load off the 8K HEVC transcoding tasks to GPU. When you play, edit or stream 8K HEVC format video, it may stutter or get stuck. The complicated compression algorithm provides flexible coding design and higher coding performance, while requires 10x more computing power. HEVC H.265 applies larger prediction units, quad-tree based structure of CUs, enhanced coding to deliver a small size.
HEVC makes it possible to stream, download or store 8K contents within the bandwidth. Considering that at least 15Mbps is recommended to stream a 4K Netflix movie, 8K asks 50Mbps or higher. It generates 40~50% bit rate reduction over H.264, namely 50% smaller size at the same quality level. HEVC offers a much more efficient compression than H.264 by increasing the maximum size of macro blocks from 16x16 to 64圆4. HEVC (High Efficiency Video Coding), also known as H.265, is the successor to MPEG4 AVC/H.264.