Well I been able to get video in the mkv file encoded in x264 to convert to mpeg2 but the only thing that I need know is the audio.Its in aac format.SO I need something to convert it to wav so I can mux it with the mpeg2 file.The reason I ask this is because I play my anime on my xbox via XBMC but content encoded in x264 dropps to many frames...SO its not watchable.So I will reencode the mkv to mpeg2 watch it then delete it.....
I had similar problem when dealing with aac audio. check this thread near the bottom http://forums.afterdawn.com/thread_view.cfm/1/267438#1513099 hope it helps!
Thanks that helped...But Im using Belight to convert it to ac3.Cuz most dvd players support ac3 and the files comes out much smaller.So I can raise the bitrate on the video.
I also converted to AC3 eventually. using the wav file obtained from aacDecDrop, i then used ffmpeggui to transcode the audio to ac3...maybe something to consider?