As Graphical User Interface (GUI), we suggest you to use x265vfw.
Its main purpose is to transfer the quality and speed of x264
to the H.265/HEVC compression standard.
X265 is the spearhead of the next generation of codecs.
This new codec is aimed at the HEVC standard, which stands for High Efficiency Video Coding.
This video compression standard is the successor of H.264/MPEG-4 AVC and it maintains the same level of video quality, while doubling the data compression ratio.
Or you can get improved video quality at the same bit rate.
Moreover, it supports resolutions of up to 8192x4320. HEVC was designed with the goal of obtaining data compression ratios of up to 1000:1.
This young format was first released in 2013, but there are already tools helping you to get the most out of it, such as the x265 Encoder.
This new codec is able to encode your videos to the HEVC format thanks to a variety of features, such as the one called motion estimation (breaking the image in blocks of various sizes depending on complexity of the areas).
The x265 is based on the x264 codec and borrows much of its technology, while it has also developed some concepts which are different from its predecessor. Some aspects, such as the wavefront processing, exceed H.264’s capabilities.
Other features of the x265 Encoder include full prediction and transform quad-tree recursion supported, CABAC entropy coding, adaptive B-frame placement, weighted prediction for P slices, multiple reference frames, scenecut detection, and rate control: constant quantizer, constant quality, single pass ABR, optional VBV.
x265 is available to anyone under the terms of the GNU GPL 2 license.
x265 is also available to commercial companies who wish to distribute x265 without the open-source restictions that the GPL license imposes.
x265 Encoder will definitely become a must as the HEVC standard will gain more and more popularity, but you can start enjoying its advantages right now, with the help of this amazing application.