Quote:
Originally posted by wmansir
VBR_bias governs the amount of variation CCE gives the bitrate between different parts of the movie. A high number means there will be little fluctuation in the bitrate, so action scenes may not be able to get all the bits they need to look good. A lower number means CCE will give more bits to scenes that require them, possibly at the expense of slower scenes.
|
You're right here. Here is a quote from the CCE manual:
"
Breaking into bit allocation strategy The encoder allocates bits based on the original evaluation standard, so that all images have the same visual quality. Changing the value of the
Bias part breaks into this evaluation standard. 0 to 100 can be set here. The initial value is 30. As the value becomes smaller, more bits are allocated to complicated scenes, and at value 0, the bitrate fluctuation is largest. As this value becomes larger, more bits are allocated to simple scenes, and at value 100, streams closer to CBR are output."
I like to set the value between 10 and 15. Then more bits can be allocated to the scenes that are most likely to get blocky (high action).