The recording conversion’s main parameters are file format and video compression codec. The file format essentially defines a container for the compressed video data, while the compression codec defines how the video data is compressed. Each file format may only support certain compression codecs. The Replay Export tool supports the AVI and Windows Media Video (WMV) formats. The AVI format supports more compression codecs, but the more modern WMV format is better suited for streaming media downloads.
The Replay Export tool does not install any video compression codecs, but instead utilizes the video compression codecs installed on your computer to compress the video data. You must install suitable codecs to perform video conversion. Windows Media compression codecs, which provide good compression performance, are usually already installed by default with Windows Media Player or DirectX. However, you may also want to install third-party video codecs, such as XviD ©xvid.org and DivX®. Once installed, the Replay Export tool automatically detects the available codecs and chooses the most suitable one for the specified file format as the default setting. If you select a different codec from the Video Compression Codec drop-down list, choose a common compression codec that is widely installed.
To play back the converted video, a user must have installed a media player capable of decoding your selected video compression format. Therefore, it is advisable that you select a codec that is likely to be installed on your target audience’s computers. In the case of Windows Media codecs, for instance, while the Windows Media 9 codec may provide the best conversion results, users with older versions of Windows Media Player may be unable to play back converted video without upgrading or downloading additional codec packs. However, many player applications are now able to automatically download codecs over the Internet, as required.
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