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I'm writing a C++ program which creates an IScriptEnvironment2 for the purposes of displaying clips. It also lets the user modify the filter chain by changing conversion matrix, interlacing settings, bobbing, etc. If I invoke a filter, is there any way to absolutely forbid the environment from ever caching frames from that filter? And would this/could this propagate to downstream filters, so that every single request for an output frame (even if it was the same frame that had just been requested) would go back up the chain to the uncached filter?
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