Real comparison of H265 and H264, two formats for measuring the same bit rate

Why choose 2M stream? In fact, this is because this is the limit of what most cities call "broadband." Do not assume that your home is 8 trillion. The knowledge of large KB and small Kb to be reduced by 8 times is not popular here.

Let's take a look at the comparison of several real videos

You can see that all are basically the same code rate

However, the comparison of the picture quality is obvious.

Compared to H.264, the biggest advantage of H.265 is that it has a higher compression rate. This point can be seen from the name of H.265, H.265 also known as HEVC (High Efficiency Video Coding, high efficiency Video Coding), its main purpose is to further reduce the required flow of the film to reduce storage and The cost of transmission. Taking H.265 as the three most important of the 27 proposals as an example, H.265 requires that in the best encoding profile, the H.264 compressed 1080P video can be saved while maintaining the same PSNR. About the amount of data is about %, and can further increase the savings to 50% when the image quality is almost the same. Therefore, in order to achieve this goal, H.265 uses a more advanced and flexible coding unit than H.264.

By comparing the pictures, we can see that in the case of the same code rate, the upper part of the figure is a video compressed by H.264 encoding. The following figure shows the H.265 encoding format video. Compared with the original H.264 encoding format, the H.265 definition is improved in terms of picture detail performance, especially in the details of human facial expression.

Of course, there are still not enough sources of light, and H.265 needs support from hardware manufacturers for it to be popular.

Rockchip walked in front of the public chip manufacturers - its RK3188 quad-core chip solution became the first ARM chip solution to support H.265 - with quad-core A9, Mail-400MP4 (quadruplex) The triple advantage of GPU and 28nm process is enough to meet the demand of H.265, obviously ahead of other chip makers. Relative to these video service providers, fast broadcast companies are not satisfied with the force only in the video side, this artifact recently began to exert power in the box side, trying to achieve a certain rivers and lakes status in Internet TV. This is not, fast broadcast launch of the first use of RK3188 chip, support for H265's fast broadcast box has been listed, the future is believed to be a video player for male otaku.