[x264-devel] Re: CABAC performance

[Guillaume Poirier]

Son Minh Tran wrote:
> Dear All,
> Have you ever tested the performance of CABAC in x264. It is strange
> that  with  toggling between using / not using CABAC (without / with
> --no-cabac option) I didn't see the improvement about 16% of bitrate at
> the cost of encoder speed fps (complexity) about 25-30%. In fact I had
> about 4-11% improvement in bitrate for only max 6% increase in the fps
> speed of encoder. You have a optimized CABAC encoder or I miss some
> things while turning off the CABAC

What command line did you use to test this?

Guillaume

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