[x264-devel] Rate control in x264

Son Minh Tran son-minh.tran at int-evry.fr
Mon May 21 15:35:11 CEST 2007


Dear all,
I try some tests on the performance of CABAC. Then I need exactly the 
same input data for CABAC encoder.Because of the rate control of x264,  
I do think that  I don,t have the same quantized  data  (before CABAC  
encoding phrase)  of  the frame  T   if   in the previous  frames, the 
output  of the whole coder (after CABAC encoding phrase) was different.
I know that there are 5 models of rate control in x264. What I need is 
the constant quantizer. Would you please show me how I can activate this 
mode? Is it enough to use --qp N at the command line?
Thank you
Son

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