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q: The audio mixer is not implementing the iseekable interface.  When I add the
mixer to a graph where seeking is currently enabled, the addition of the
mixer removes the graph's ability to seek.  Also, when I wrote a source
filter that was using the interface, the mixer was not passing seek requests
to its pin.

a: Output pins of Audio Mixer filter supports IMediaSeeking. Please, see graph 
on attached picture. Seeking can be not supported only if some connected 
upstream filter not support it.

[[Image:AudioMixer Seeking.gif|thumb|200px]]


[[Category: FAQs]]