There are two NetShow Player installations, a full installation and a core installation. The full installation contains all the codecs that Microsoft is licensed to provide, but is quite large and takes a while to download. The core installation contains a minimal set of codecs and loads much more quickly. The following sections list the codecs that are part of each installation. Don't worry about creating an .asf file or ASF stream that someone won't be able to play. If you are not sure that a client computer will have the necessary codec to render an .asf file or ASF stream, you can use the ActiveX codebase feature to force a Web page to check whether the client computer contains the codecs necessary to play the .asf file or ASF stream.
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