As I got some stuff regarding mkvdts2ac3 from other sources on the internet. I got some interesting thing, we can be able to change mkv dts to ac3 audio without converting the complete file. The mkvdts2ac3.sh is truly straightforward , but I am not sure about the procedure for installation :
libdca - DTS to WAV decoder
aften - WAV to AC3 encoder
Some installation guidelines suggests that you have to use the command line argument but I am not getting how to do this . Anyone have any idea about this ? Thank you very much....