Summary: AV1 is royal free while hevc is not.ĪOMedia Video 1 (AV1) is the successor to VP9, developed by the Alliance for Open Media, a consortium of the largest tech companies including Intel, Amazon, Apple, Facebook, Google, Microsoft, Mozilla, and Netflix (see all the members below). You may be also intertested in: AV1 vs VVC, HEVC vs VVC, H.265 (HEVC) vs H.264 (AVC) 1. The support for AV1 decoding is already here but the AV1 encoding is by far supported by Nvidia and Intel only. HEVC is supported by GPU/CPU from AMD, Nvidia, Intel, Apple, Qualcomm, etc.AV1 requires more powerful hardware to decode, and it takes much longer time to decode than HEVC.AV1 can save up to 30% file size than HEVC for the same image quality.AV1 is royalty-free while HEVC is royalty bearing.Despite the impressive tech on offer, only time will tell whether it’ll become the dominant global video compression format.įor more explanatory guides, see what all this fuss is about with Nvidia’s DLSS, which is capable of drastically increasing your gaming frame rate without overheating your PC.If you don't want to bother with the detailed discussion, check the AV1 vs HEVC conclusion below: One thing’s for sure: H.266 hasn’t had quite as smooth a ride in terms of adoption as its predecessor. AV1 isn’t as effective at compression as H.266 but isn’t as locked down when it comes to license fees and patenting. Microsoft, meanwhile, seems to be more interested in the royalty-free Aomedia Video 1 (AV1) codec, and late last year rolled out support for it. For now, Apple’s iPhone and iPad operating system, iOS, still stores all video files in H.265. H.266 also has dedicated support for HDR video and 360-degree videos – two vital modern techs that weren’t specifically supported by H.265. Currently, only a handful of cameras can even produce 8K video, and very few monitors can display that kind of resolution. With H.266, video can be encoded at up to 8K UHD or 8192 pixels × 4320 pixels. The world is becoming higher-res, and H.266 supports that. What does this mean in real terms? It means the process of encoding and decoding takes quite a bit longer, which makes it a less attractive proposition for operating systems and other software to take it on. Yes, it offers considerably better compression than its predecessor, but it’s also significantly more complex to encode and a little bit more complex to decode. It’s all very fine stuff, but it’s essentially refining the compression process. H.266 improves over H.265 by accommodating an MV resolution as granular as 1/16 luma-samples compared to the 1/4 offered in H.265. H.266 brings with it some impressive new tools to improve interframe prediction, which allows for higher compression rates by essentially working out what the next frame will look like based on its preceding frame. While H.265 had 35 intra prediction modes, H.266 has an impressive 67. Improved motion prediction means improved file size and compression quality.Īlongside the improved compression standards in H.266, we also find major improvements in motion prediction and compensation. When there’s no change in a pixel, a video codec can save space by referencing it rather than reproducing it. Video compression relies on predicting motion between frames. H.265 allows for 64 x 64 pixel macroblocks, while H.266 provides for 128 x 128 pixel macroblocks (now called coding tree units or CTUs), allowing for greater encoding efficiency at all resolutions. Part of this improvement comes from an increased macroblock size. With H.266, a video of the same apparent visual quality would take up only half as much space.Īlternatively, a video of the same file size and bit rate could be significantly better looking. The newer codec can achieve about 50% more compression than its predecessor. H.266 offers massively improved compression over H.265. There are far more improvements that we can cover here, but these are the highlights for consumers. The H.266 codec offers some major improvements over the H.265 codec, which was first developed in the hazy days of 2013.
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