Yes, QuickTime 2.0 does support the Indeo codec. However this is not done through any of the internal codecs. QuickTime is very flexible, and supports additional codecs through external means. This is how QuickTime 2.0 provides this support.
Intel has released the external plug-in codec in the form of an extension. It is available on AppleLink, Intel's FTP site, and various other online services.
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