What does RMVB mean? What does RMVB mean?

What is RMVB

The VB in RMVB refers to VBR, which is the abbreviation of Variable Bit Rate, which means variable bit rate in Chinese. Generally speaking, a 700MB ***rip uses an average bitrate of 450kbps compression, and the generated rmvb size is only 400MB, but the image quality has not changed much. This technology has been applied as early as ***, and now with the launch of REAL's Helix Producer 9, it has also been applied to the ** field.

The so-called RMVB format is an upgrade and extension of the RM video format of the streaming **. VB stands for VBR, which is the English abbreviation of Variable Bit Rate. When we are in the common RM format movies in the past, we can see the words 225kbps in the lower left corner of the device, which is the bit rate.

The requirements for compressed sample rates are different for still and moving images, and if you always maintain a fixed bitrate, it will be a waste of film quality.

On the other hand, RMVB breaks the original RM format with an average compression sampling method, and sets a maximum sampling rate value that is generally twice the average sampling rate on the basis of ensuring the average compression ratio. The higher bitrate is used for complex dynamic pictures (singing and dancing, speeding cars, wars, etc.), and in the static pictures, it is flexibly converted to a lower sampling rate, and the bitrate resources are reasonably used, so that RMVB can minimize the size of the film at the expense of a small number of video quality that you can't perceive, and finally have an almost perfect audio-visual effect close to *** quality, as shown in Figure 1 is the RMVB format of "Saint Seiya Hades". It can be described as "the best of both worlds" in terms of volume and clarity, and its development prospects should not be underestimated.

Compared with ***RIP, the advantages of RMVB are self-evident. First of all, on the premise of ensuring the overall audio-visual effect of the film, the size of the RMVB is only about 300 450MB (calculated based on a 90-minute standard movie), while ***RIP requires 700MB or more; Secondly, the subtitles of RMVB are embedded subtitles, unlike ***rip, which requires the installation and debugging of subtitle plug-in software, and sometimes there will be garbled characters; What's more, the video and audio of RMVB** only need to install the decoder at one time, and there is no need to debug the video or sound effects in the future. However, there are a lot of audio decoding, and improper settings will also cause the sound and picture to be out of sync, and the screen is out of voice.

RMVB format: This is a new ** format extended by the RM** format upgrade, its advancement is that the RMVB** format breaks the original RM format that kind of average compression sampling method, on the basis of ensuring the average compression ratio of reasonable use of bitrate resources, that is, the picture scene with less static and action scenes adopts a lower encoding rate, which can leave more bandwidth space, and these bandwidths will be used when there is a fast-moving picture scene. In this way, on the premise of ensuring the quality of the still picture, the image quality of the moving image is greatly improved, so that the image quality and file size are delicately balanced.

In addition, compared with the RIP format, RMVB** also has obvious advantages, a *** film with a size of about 700MB, if it is transcribed into the same audio-visual quality RMVB format, its size is about 400MB at most. Not only that, but this format also has unique advantages such as built-in subtitles and no plug-in support. To get this format, you can use or add the decoder to the previous version.

MP4 is the most basic audio ** file format (which means that it can be opened under most machines) Zi Dan disadvantages,The trace family to**Chi Ye to a lot of space。 Whereas, RMVB is smaller because it can only be opened by specific programs. MP4 can be opened by many programs, look.