The quantization parameter

Hello,
I have just installed the codec vlc compilation mode.my OS is ubuntu.  I 
documented the process of video compression and I found that video 
compression goes through several stages. The step of quantization step 
is the most impotant because it is there where we decide the rate of 
compression. The quantization step manipulates a parameter called: The 
quantization parameter. I would like to extract this parameter from the 
vlc code.
However, i could not find the part of the code where it is implemented.

I would be grateful to give me ideas on which part pf the code i can 
manipulate this quantifucation parameter.

Toufik
_______________________________________________
x264-devel mailing list
x264-devel <at> videolan.org
http://mailman.videolan.org/listinfo/x264-devel