btw.
I have tried with avidemux2 with different kind of settings and found that when ever i try to encode mp4 file video h.264 with mp3 the sound gets crippled. Only aac works. I do not know why, maybe it's frequency maybe channels or maby other 20 different things. I´m just wondering that in video encoding wiki it says that you can use with hadnbrake what ever you like "as you like it", so basically has someone really really tried all the different scenarios? Because if not then it´s safer to just tell exactly what you should put in there and avoid users asking here why the preset doesnt work.

..edit
Maybe its good to say that do not change presets audio settings.
Also link to this thread would be good.