What do you mean, rmvb?

RMVB is a video file format, RMVB in VB refers to vbr,variable bit Rate (can change the bit rate), compared to the previous generation of RM format screen to clear a lot of reasons is to reduce the static screen bit rate, you can use RealPlayer, Storm audio and video, QQ audio and video playback software to play.

RM and RMVB

The normal RM format is the real8.0 format, with fixed bit rate encoding. More see VCD-RM, has been popular for some time. However, because the VCD chip source of congenital deficiency, not clear enough, so the pressure out of RM will not be clear. In particular, the standard online 225kbps rate, clarity is almost miserable.

RMVB than RM a vb,vb refers to the variable bit, dynamic rate of the meaning! is real company's new coded format 9.0 format. RMVB (real9.0) and RM (real8.0) in the audio coding are still used in the 8.0 format, we press the film at least 32kbps music, usually 44K,MTV class useful to 96K, and then no need to compress the job!

RMVB and pressure tablets

Now for example: if the same 450K, RM for fixed 450K rate, for RMVB is 450~900k (default is doubled) between the intensity of the screen to encode. Will eventually get an average code rate, such as 460.8K. Here is a detailed description:

DVDRip Because the data volume is big, the picture quality is clear, compresses it to rmvb to be able to obtain the clear effect (certainly we compress the code rate is also big). If the pressure into RM format that is 8.0 format will be clear, but not as good as RMVB. However, the RM format compatibility is good, playback on the CPU requirements are not high, rmvb need to play on the high configuration of the machine to smooth.

If the VCD also pressed into the RMVB format does not need to, because RMVB is not said will make the document clear, but to see the original film file. To get a clear rm/rmvb, you need a high definition of the original document, such as DVDRip. VCD format, that is, the 1M coding rate of the quality of the effect is at best similar to the original VCD.

This is the difference between the 2. This is just to remind you not to ignore RM because of RMVB. If the VCD pressed into real format should use the real8.0 format, that is, RM, and do not choose real9.0 rmvb. For some life dramas, cartoons and other dvdrip can be used real8.0 RM format to pressure, do not have to use VBR encoding. This is a misunderstanding!

RMVB Analytic Chapter

Where does "VB" come from

The so-called RMVB format, is in the streaming media of the RM movie format up-level extension. VB is VBR, which is the abbreviation for variable bit Rate (the bit rate can be changed). When we play the usual RM format movies, we can see 225Kbps in the lower left corner of the player, which is the bit rate. The film's still picture and the motion picture to the compression sampling rate request is different, if always maintains the fixed bit rate, will cause the movie quality to waste.

The superiority of "VB"

While RMVB broke the original RM format that average compression sampling method, on the basis of guaranteeing the average compression ratio, set the average sampling rate of twice times the maximum sampling rate value. The higher bit rate is applied to the complex dynamic picture (song and dance, Rook, war, etc.), while in the static screen is flexible to a lower sampling rate, reasonable use of bit rate resources, so that rmvb at the expense of a small part of the quality of the film you do not realize the maximum compression of the film size, Finally, it has a nearly perfect audio-visual effect close to the quality of the DVD.　　Can be described as the volume and clarity of "fish and Bear Bear", its development prospects should not be underestimated. Compared with DVDRip, the advantages of RMVB are self-evident. First of all, in order to ensure the overall audio-visual effect of the film under the premise of RMVB only 300~450mb around (to 90 minutes of standard film calculation), and DVDRip but need 700MB or more; second, rmvb subtitles for inline subtitles, unlike DVDRip to install debugging subtitles plug-in software, Sometimes there will be garbled, more importantly, RMVB audio and video playback only a one-time installation of the decoder, no matter whether the image or the sound effects need not be separately debugged. and DVDRip But video, audio decoding a large pile of improper settings will also cause the tone painting different steps, flower screen and so on.

Supplemental: DVD RIP is a production standard for external subtitles. RMVB can also use external captions like DVD RIP, which is almost the same as DVD RIP. So if you get a rmvb movie that doesn't have subtitles, don't throw it away easily, If you find the corresponding SRT subtitles or sub captions, you can play the video and subtitles with the storm audio as long as the filename is the same suffix. Or try to change the suffix name rmvb to AVI, the general player can also recognize.