Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | Next revision Both sides next revision | ||
x264_quality [2014/08/17 15:37] beandog |
x264_quality [2014/08/17 15:43] beandog |
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(((1 - old) / (1 - new)) - 1) * 100 | (((1 - old) / (1 - new)) - 1) * 100 | ||
</code> | </code> | ||
+ | |||
+ | Here's a simpler visualization: | ||
+ | |||
+ | <code> | ||
+ | 1 - 0.9613678 = 0.0386322 | ||
+ | 1 - 0.9751283 = 0.0248717 | ||
+ | 0.0386322 / 0.0248717 = 1.55325932686547361057 | ||
+ | 1.55325932686547361057 - 1 = 0.55325932686547361057 | ||
+ | 0.55325932686547361057 * 100 = 55.325932686547361057 | ||
+ | </code> | ||
+ | |||
+ | Rounding it out to an integer, would be 55, for a result of 55%. So when encoding **this particular video** at double the bitrate, the SSIM increases by 55%. Not bad! |