Wait. . Why ?

[ShiniGami NoMeresu]

Is there anyway to fix this problem? or i have to give up on 4:3 res for stage

[Kazagami]

it looks like you have to re-arrange the start position of every bg elements.

[NotAGoodName]

I can't exactly tell because you don't show the entire screen, BUT...

 

By default, 16:9 in mugen is 4:3 cropped.  So, you need to design the stage for 4:3 first.  THEN make adjustments and edits so that it works in 16:9 with/without appropriate localcoord.

[ShiniGami NoMeresu]

here the both res

and here what it shows in FF

this yellow box. it can be bigger and wider ?
 

[NotAGoodName]

Ok, yes.  See how you see more stage in the 4:3 mode screenshot?  You need to make it work it there, first.  You obviously didn't use any sort of localcoord for it in 16:9 mode, so mugen is just doing the default thing where it's cropping the top and bottom to make it 16:9.  It's really obvious if you make both screenshots the same width.

[ShiniGami NoMeresu]

i want the stage bottom like its in 4:3 res for 16:9 res ..how to set the localcoord ..is it same like chars ?

i changed localcoord in FF but it didn't show any effects

in 4:3 res the lifebars are right on top of chars heads. bit odd for me and i dont like it in that

i also want to add high jump .at least the as much as BG's height