Real Alternative是从Realone中Rip出来的解码包，简而言之，通过安装这个解码包，你可以在不安装Realone或者Realplayer的情况下播放Real格式的音频、视频文件。目前Media Player、Media Player Classic、Zoomplayer等主流的媒体播放器都能够通过Real Alternative来播放Real文件。另外，Real Alternative也支持嵌入Web的Realmedia的播放。

    如果在使用佰锐科技的“3GP、MP4视频转换精灵”过程中，无法转换rm、rmvb格式时，通过下载安装该软件，便可以正常转换，主要原因是“3GP、MP4视频转换精灵”没有包含RealMedia Codec。

    Real Alternative包含：

Player:

Media Player Classic [version 6.4.9.1 rev. 50]
This is a full-featured player which has internal decoding support for DVD, MPEG-1/2, MP3, MP2, AAC, AC3 and DTS. It also has internal support for opening MP4, Matroska and Ogg containers. Media Player Classic is also capable of playing QuickTime and RealMedia content if those codecs are installed.

RealMedia:

RealMedia components [version 6.0.14.806]
Required for playing RealMedia movies and audio.
RealMedia ActiveX control
For viewing RealMedia content in Internet Explorer. Other programs might also need this component.
RealMedia plugin for Firefox/Mozilla/Netscape/Opera
For viewing RealMedia content in these browsers.
RealMedia DirectShow splitter [version 1.0.1.2]
Allows you to play RealMedia files in all DirectShow enabled players. Without this filter RealMedia files can only be played in Media Player Classic. This filter only works with files that are on your harddrive. It does NOT work with streaming content. Therefore it is highly recommended to use Media Player Classic, because MPC does support streaming content.