Trying to get a Quicktime IMG_File plugin working, but I need to access the current frame being requested.

IMG_FilejumpToFrame and other time related methods are marked as deprecated.

Is there a way to get this information?
The moment I try to use $F in the filename, Houdini sees the expanded filename doesn't exists and my format is no longer called.

Is there some sort of meta tag similar to FBX import, ( $HFS/../file.fbx#object ) one can set up to get this information.

Thanks