util to split/join VC1 by size?

[FredThompson]

I am looking for a freeware GUI app to split/join VC1 WMV files in a manner similar to TSSplitter or tsMuxerGUI. The goal is to chop files into DVD5-sized standalone files and rejoin them if desired. Does such a thing exist? If so, where?

Unfortunately, it is not so easy to find such a thing. There are too many search hits that lead to commercial apps or muxing processes, not repackaging splitter/joiners...for lack of a better term.

[Inspector.Gadget]

ASFBin should be able to do it. ASFBin's command-line version is more up to date than the GUI version, by the way.

[FredThompson]

ASFBin doesn't break based on destination file size. It won't do what I want. I suppose times could be projected after examining the structure of each source file then calculating break times but that's exactly the "busy work" I'm looking to eliminate.

Do you know of a frontend for ASFBin which will do what I want?