Memory leak when start/stop filter graph many times

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  I am implementing an application by using directshow filter graph as bellow:
    Camera capture fiter -> custom encoder filter -> sample grabber filter

   When I repeate start/stop graph many times the memory leak occurred.

   If I Pause/Start graph many times then didn't occur memory leak, but when I use Pause() function then after Start() filter graph again, the first image will be merge with previous image. So I must use Stop() function in this case.

   I think the memory leak occured in custom encoder filter, but I don't understand why has memory leak when stop and start again filter graph.

   How to fix memory leak when start/stop filter graph ?

   I investigated much time, but I didn't find any solution for it. Please help me.

  Thursday, January 16, 2014 7:04 AM