Yes, you just asked for it just whether its possible. Post headers dont count as questions because thast against writing style all that i need to know should be in the body text. For example in maya 2011 abit different in other maya versions:
playblast -format avi -compression MS-YUV -quality 10
But offcourse if you want to set the gui item:
optionMenuGrp -e -value "MS-RLE" OptionBoxWindow|formLayout117|tabLayout6|formLayout119|BoxLayout|tabLayout7|columnLayout4|playblastCompressWidget