This is another high-efficiency codec that’s open-source and royalty-free. This has prevented many browsers and device vendors from supporting the codec.īesides H.265, many broadcasters are turning to AV1 as a future codec. H.265 is a proprietary codec like H.264, but there are several patent pools and the licensing fees are often much higher. The primary roadblock for adoption has been a complicated and expensive patenting scheme. While the initial version of H.265 was ratified in early 2013, adoption has been slow. H.265 also has an improved deblocking filter and an additional filter to reduce artifacts at block edges called sample-adaptive offset filtering. This is possible due to the codec’s coding tree units (CTUs) approach for processing information. H.265 achieves greater efficiency than H.264 by supporting larger macroblocks up to 64 pixels and more precisely predicting motion vectors during encoding. Deblocking also helps to smooth out the colors between the macroblocks to reduce pixelation. The codec can also predict the direction macroblocks are moving and encode this as a motion vector as well. If these macroblocks are the same over several frames, the information can be eliminated to save data. Similar to H.264 and other block-oriented codecs, H.265 divides video frames into macro-blocks or groups of pixels. More specifically, H.265 uses a technique known as motion compensation prediction. JCT-VC’s collaborative team of video encoding experts created the new standard to substantially reduce the file size and bitrate and in turn, the costs, associated with 4K and 8K video content. The concept for H.265 was largely an extension of H.264, but introduces numerous improvements during the encoding process. The Joint Collaborative Team on Video Coding (JCT-VC) developed HEVC with the hope of achieving twice the compression efficiency as H.264. Compression can dramatically reduce the size of videos without impacting the perceived quality of the content.
That’s because high-quality videos have larger file sizes and higher bitrates, which requires more bandwidth to stream to end-users. In fact, H.265 is more efficient than H.264, which is its predecessor and currently the most widely used codec by broadcasters.Īs video resolutions and quality expectations continue to increase, achieving greater compression efficiency is crucial for over-the-top (OTT) streaming.
High Efficiency Video Coding (HEVC), also known as H.265, is a video codec or compression standard that’s steadily growing in adoption.
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