New Post: Resampler Transform

I probably need to follow this procedure

Get Stream Identifiers

An MFT has one or more streams. Input streams receive input data, and output streams generate output data. Streams are not represented as distinct objects. Instead, various MFT methods take stream identifiers as parameters.

Some MFTs allow the client to add or remove input streams. During streaming, an MFT can add or remove output streams. (The client cannot add or remove output streams.)

1. (Optional.) Call IMFTransform::GetStreamLimits to get the minimum and maximum number of streams that the MFT can support. If the minimum and maximum are the same, the MFT has a fixed number of streams.
2. Call IMFTransform::GetStreamCount to get the initial number of streams.
3. Call IMFTransform::GetStreamIDs to get the stream identifiers. If this method returns E_NOTIMPL, it means the MFT has a fixed number of streams, and the stream identifiers are consecutive starting from zero.
4. (Optional.) If the MFT does not have a fixed number of streams, call IMFTransform::AddInputStreams to add more input streams, or IMFTransform::DeleteInputStream to remove input streams. (You cannot add or remove output streams.)

reference : http://msdn.microsoft.com/en-us/library/windows/desktop/aa965264(v=vs.85).aspx