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Old 4th September 2013, 03:34   #1  |  Link
xxxyyyzzzz
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Join Date: Mar 2011
Posts: 5
x264 rate control modes

Recently I am reading the x264 source codes. Mostly, I concern the RC part. And I am confused about the parameters --bitrate and --vbv-maxrate. When bitrate is set, the CBR mode is used in frame level. If you want to start the MB level RC, the parameters bitrate, vbv-maxrate and vbv-bufsize should be set. But I don't know the relationship between bitrate and vbv-maxrate.
What is the criterion of the real encoding result when bitrate and vbv-maxrate are both set?
And what is the recommended value for bitrate? Equals to vbv-maxrate?
Also what is the recommended value for vbv-bufsize? Half of vbv-maxrate? Please give me some advice.
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