How about
AutoMKV?
Free, has quite a few AVC config xml's. Ipod, PSP, PS3, Xbox, etc....
You can custom resize (thanks to avisynth which I believe is required). And also use some avisynth filters too (denoisers, sharpeners, etc...).
Can mux into mp4, avi and mkv (of course only mp4/mkv can be used for x264 though).
BTW it's free.
Bow down to the all mighty and powerful AutoMKV :laugh:
You'll definitely need avisynth.
And you'll probably need ffdshow, latest xvid build (Kopie), and Nero's AAC encoder.
All of which are linked to from the above site.
IMO, AutoMKV is like a one stop shop for an easy to use yet powerful mpeg4 encoder gui.
It also does WMV but who uses that anyway
😉