A video processing device for generating an output video stream on the basis of two or more concurrent input video streams and a method thereof are described. The output end of the manifold has at least two and suitably multiple output ports. Several intermediate layers, disposed between the underlayer and the magnetic layer may also be included. A method for forming an image onto a recording medium using the liquid developer is also provided. Electric resistivity of the insulation layer is 1\xd7108 \u03a9\xb7cm or higher. The invention provides compounds and methods for inhibiting histone deacetylase enzymatic activity.