//Calculates the Media Frame Rate. The Numerator and Denominator were obtained from IMFMediaType from the video file loaded locally by IMFSourceReader.
var FrameRate = Math.Round((Numerator / Denominator)).

//Calculates the delay that will be used to call the next sample. Video processing time is 8 to 11ms.
var Delay = Math.Round((1000 - Video Sample Processing Time) / FrameRate) - 12.

//Get the next video sample available in the buffer.
IMFSample VideoSample = BufferVideo.Next();

//Calls the method that will copy the read sample data to the IMFVideoSampleAllocator sample. The sample is accessed for the IMF2DBuffer2 interface as recommended by MSDN.
ProcessVideoSample(VideoSample);

//I call IMFSourceReader to read the next available video sample. This method is thread safe. The sample reader is in Asynchronous mode.
RequestNextSample(TypeSample.Video);

//Delay to read the next sample. The delay is calculated as shown above.
await Task.Delay(DelayFrameRate);