What is the format of RMVB? What about clarity?

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's Environment The RMVB tool is RealOne Player. Storm Video and so on are fine.

For more information, please refer to.

RMVB is a **file format,VB in RMVB refers to VBR,Variable bit rate (variable bit rate),Compared with the previous generation of RM format picture,The reason is to reduce the bitrate under the static picture,You can use RealPlayer**software**.

In general, clarity and format have nothing to do with each other, because clarity is determined by resolution and bitrate, and format is just an encapsule.

1. The code rate is proportional to the mass, but the volume of the Wen macro is also proportional to the bit rate.

2. If the bit rate exceeds the fixed value of one megabyte, it will not have much impact on the quality of the image.

mp4 format. Namely. mp4

MPEG-4 incorporates the vast majority of MPEG-1 and MPEG-2 features and other formats, and adds and expands the Virtual Reality Model Language (VRML).

virtualreality

modeling

language), object-oriented compositing files (including sound, video, and VRML objects), and digital rights management.

DRM) and other interactive features. One of the more advanced features of MPEG-4 than MPEG-2 is that it no longer uses macro blocks and collapses for image analysis, but records the changes of individuals on the image, so although the image changes quickly and the bitrate.

When insufficient, the block screen will not appear.

Bitrate (the bitrate that can be changed,Compared with the previous generation of RM format picture,The reason is that the bitrate under the static picture is reduced,You can use RealPlayer、Storm Video、QQ Shadow Nian Moyin and other **software**。