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Frequently Asked Questions

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What is RMVB format?

RealMedia Variable Bitrate (RMVB) is a variable bitrate extension of the RealMedia multimedia container format developed by RealNetworks.

As opposed to the more common RealMedia container, which holds streaming media encoded at a constant bit rate, RMVB is typically used for multimedia content stored locally. Files using this format have the file extension ".rmvb".

RealMedia formats typically achieve much more efficient compression than MPEG4-part2 codecs, such as DivX and Xvid[citation needed]. For this reason, they have become noticeably present (though not entirely popular) on file sharing platforms such as Bittorrent, eDonkey and Gnutella. Limited support is available on some media players, generally on the Windows platform, including the proprietary RealPlayer 10 and the open-sourced Media Player Classic, using an appropriate DirectShow filter. MPlayer and some other programs such as totem are able to play RMVB files in Linux/UNIX-based x86 machines through the use of WIN32 DLLs.

Do I need install RealPlayer or RealOne Player If i wan to convert video to RMVB ?

You needn't download Real Player to play rmvb file, Real Alternative will allow you to play RealMedia file without having to install RealPlayer or RealOne Player.

Supported are: RealAudio (.ra .rpm), RealMedia (.rm .ram .rmvb .rpx .smi .smil), RealText (.rt), ReadPix (.rp). It also supports RealMedia content that is embedded in webpages.

RealMedia .smi and .smil files are not fully supported, only the first part will usually be played. This is a limitation of the current Media Player Classic. The RealMedia Browser plugin supports Internet Explorer, Opera, Mozilla and Netscape.

Please download " Real Alternative" from

When the conversion was finished, I want to play the result files on the iPod/iPhone/Apple TV, what do I need to do so that I can transfer the output files into my iPod?

You have to download itunes , It is a must. Please download it from The transferring job must be done by this tool.