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more balanced rate factor calculation

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minjaesong
2025-08-29 14:47:06 +09:00
parent f66e537d79
commit 2eff7f67fb
1 changed files with 2 additions and 2 deletions
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4
video_encoder/encoder_tev.c
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@@ -499,10 +499,10 @@ static float calculate_block_complexity(const float *y_block) {
// Map complexity to rate control factor (pure per-block, no global factor)
static float complexity_to_rate_factor(float complexity) {
const float P = 18.f;
const float P = 10.f;
const float e = -0.5f;
float factor = P * powf(FCLAMP(complexity, 1.f, 16777216.f), e);
return FCLAMP(factor, 0.5f, P); // the "auto quality" thing can be excessively permissive
return FCLAMP(factor, 1.f / 2.f, 2.f); // the "auto quality" thing can be excessively permissive
}
// Simple motion estimation (full search) for 16x16 blocks