[MP3 ENCODER] 3.80 VBR observations

[Ross Levis]

If anyone is interested,VBR is now more spread over the bitrates.  Here is a partial 
frame analysis of a song (all encoded with -h -mj ).  I included -V3 analysis to 
obtain a closer average
bitrate.  Some -V tuning is obviously needed.  I guess the better lossless compression 
is having an effect.

v3.70: (-V4)
64 - 1 - 0.0%
80 - 76 - 0.6%
96 - 1106 - 9.0%
112 - 5943 - 48.6%
128 - 3348 - 27.4%
160 - 982 - 8.0%
192 - 489 - 4.0%
224 - 191 - 1.6%
256 - 76 - 0.6%
320 - 10 - 0.1%
Average bitrate: 124.6

v3.80: (-V3)
64 - 18 - 0.1%
80 - 343 - 2.8%
96 - 2821 - 23.1%
112 - 2858 - 23.4%
128 - 2587 - 21.2%
160 - 2570 - 21.0%
192 - 634 - 5.2%
224 - 242 - 2.0%
256 - 106 - 0.9%
320 - 42 - 0.3%
Average bitrate: 129.1

v3.80: (-V4)
64 - 58 - 0.5%
80 - 1771 - 14.5%
96 - 3709 - 30.3%
112 - 2859 - 23.4%
128 - 2075 - 17.0%
160 - 883 - 7.2%
192 - 557 - 4.6%
224 - 174 - 1.4%
256 - 89 - 0.7%
320 - 35 - 0.3%
Average bitrate: 115.3

Ross.


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