Shulou(Shulou.com)06/03 Report--

With the development of LVB technology and competition within the industry, the technical requirements of LVB app software development are gradually increasing. When developing LVB app software, we often reserve the bitrate switching feature in the system backend to facilitate the operation team to adjust frame rate and bitrate, and coordinate clarity, fluency and bandwidth charges.

Definition commonly used in developing LVB app software:

Live app software is commonly used in fluency, high definition (720p, 1080i and 1080p) and ultra definition (3840mm 2160 and higher resolution). In fact, there are Blu-ray 4m (4000 bitrate), 8m (8000bitrate) and 10m (10000 bitrate). However, Blu-ray image quality is generally only available for primary VJs, while secondary VJs are usually only allowed to use fluent picture quality. It is said that video definition is an important indicator of user experience. Why are some live streaming software so stingy in terms of definition?

Why not pursue ultra-clear? what's wrong with super-clear?

In the development of live app software technology, ultra-high definition video technology has long been mature, but ultra-high definition brings not only the praise of users, but also the pressure on hardware equipment and huge traffic charges.

The definition of the video is related to the resolution and bit rate of the video itself. with high resolution, the more pixels of the picture, the higher the bit rate, and the frame rate determines the visual fluency, and each frame needs a higher bit rate to display the image. the more frames, the higher the bit rate to ensure video fluency and sharpness. at the same time, the larger the bit rate, the larger the video file, the larger the bandwidth usage, and the bandwidth cost will be increased.

How to ensure the clarity and fluency of live video

First of all, in order to provide high-speed video processing and transcoding services, we can make extensive use of GPU transcoding and decoding when developing LVB app software, which means that VJs need a high-configuration computer (or video card).

Second, the distribution function of CDN can help video transmission, faster transmission means better fluency, distributed nodes always have edge servers closer to users.

Finally, appropriately increase the budget on the bandwidth cost, which is the guarantee of smoother and clearer video.

Why does the live broadcast platform restrict the definition of live broadcasting?

Usually, LVB platforms impose definition restrictions on novice VJs. The primary reason for this is to save bandwidth costs. A bitrate of about 2000 is enough for talent VJs, but LVB viewers have high requirements for definition. Changing LVB app for 8000 bitrates occurs from time to time.

Even if the platform bleeds to set UHD for each VJ, it is useless if the VJ's network environment and hardware such as acquisition devices and computer graphics cards are not supported. Similarly, if the viewer's network environment is unstable or the home broadband is not enough to support the UHD of LVB, Catton's LVB screen will "persuade" users back to fluency.

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