Need a unmanaged API that is similar to audiovideoplayback of managed code

See more:

C++

MFC

DirectX

directshow

audiovideoplayback namespace of DirectX is available in managed code to handle audio and video.
It has two classes, Audio and Video. So if you want to handle video volume then get object of audio class from video object and use it.

But I am unable to find this type of API (AudioVideoPlayBack) in unmanaged DirectX.

I want to control to play two video file in two different speakers (Left and Right).