GUI for x26 - it can look nicer, like this...
This is how GUI can look (done just in couple of minutes). With preconfigured profiles, automatic generation of command lines, and dynamic help (which is already writen as PDF)

But, where is download link for that FANTASTIC GUI?

About Presets, where did you find them ? They come from Sharktooth ? Also, this is a section for VFW interface not the CLI. I don't know why did you create a tab for this part...VFW can't access to the CLI interface.

It's very possible to frameserve into the CLI with VirtualDub. You might want to search Doom9 for more info on the method. Of course, you could also just pass an AVS script to the CLI in the first place. Might help in batch encoding if you know what you're doing. I like your GUI style. Perhaps it can be integrated into the VfW (not the CLI stuff, though--remember, CLI and VfW are 2 different things). I'll see what I can do about it for now... PS: In that screenshot, you clearly have the "Quality:" and "Speed:" meters mixed up ;) Be careful there!