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What is H.265 Codec and the Advantage of H.265 over H.264?

What is H.265 codec? What upsides does H.265 have over H.264?

Recently, I have seen quite a few articles titled "H.265 and H.264" on the internet, which confuses me a little bit as I know what H.264 or AVC means, but don't have the slightest idea about what H.265 codec is. Is there anyone who can tell me something about it, such as its definition, history or advantages? Thanks in advance.

Best Answer:

As the biggest contributor to the globe prevalence of 1080p videos, h.264 can no longer carry on the task to popularize 4K video worldwide due to its low compression ratio. Therefore, here comes H.265.

Definition of H.265 Codec
What is H.265 codec? Let me tell you. H.265, or High Efficiency Video Coding, is a new video coding standard that specifies how to decode video, which is the successor to Advanced Video Coding (AVC), also known as H.264.

It is developed by the Joint Collaborative Team on Video Coding (JCT-VC), and the first version of the standard was completed, approved, and published in 2013. The second version was completed and approved in 2014 and published in early 2015, and includes format range extensions, scalable coding extensions (SHVC), and multi-view extensions (MV-HEVC).

Advantages of H.265 Codec
Now you have learned about the definition of H.265 codec, and it is time to move onto the advantages of H.265. HEVC was developed with the goal of providing twice the compression efficiency of the previous standard, H.264 / AVC. Although compression efficiency results vary depending on the type of content and the encoder settings, at typical consumer video distribution bit rates HEVC is typically able to compress video twice as efficiently as AVC. End-users can take advantage of improved compression efficiency in one of two ways (or some combination of both):

Definition of H.265 Codec
1. At an identical level of visual quality, H.265 codec enables video to be compressed to a file that is about half the size (or half the bit rate) of H.264,
2. When compressed to the same file size or bit rate as H.264, H.265 delivers significantly better visual quality.

However, it is worth noting that H.265 format is not supported by all the mainstream devices, which makes playing H.265 files on incompatible devices impossible unless you have a professional H. 265 video converter.