Like i told you in my previous post ,..you should rip in SBC
But ok, i will try to explain somethings about MakeFilmTNG ..
First of all,the bitrate of the movie depends on the runtime,..you wanna make a 2cd rip from a 90 mins movie ,then i should say , use 1500 LM and 2500 FM , if you wanna make a once 1cd movie then i should pick LM 800 FM 2000 , but also this isn't very correct you can't make an perfect avi file that just fits on 1cd (700mb),so if the final avi is something bigger then you can cut some credits of,another important thing is,when you have a fast motion movie (ex. The Matrix) then you should make 2 FM rips ,because most of the movie are fast motion scenes and it's unusefull then if you make an FM and LM rip.
But when you're ripping an Low Motion movie, (mostly drama's or Comedy's) then you can also make 2 LM movies,and mix them with MakeFilmTNG.
Another usefull thingy from MakeFilmTNG is that you mix the credits in between your movie,first your cut your credits out the movie with VD or ND and then you encode them on a very low bitrate,i always use 128 kbs =) then your credits will look really blocky ,but he who cares ? And then you fill in the frame where the credits start in MakeFilm and mix them with your LM and FM part.
About you're keyframe question,use a keyframe interval from 10 ,that's the standard frame that is used in divx movies,if you go lower,it 's just making your final avi file higher,a keyframe only has one function if after the number of seconds you set there there has been no keyframe inserted by the scene change detection mechanism a keyframe will be inserted. If there is a keyframe inserted by the SCD this counter will be reset.