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-rw-r--r--libavcodec/x264.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/x264.c b/libavcodec/x264.c
index b2e922f0a7..0b08b2df80 100644
--- a/libavcodec/x264.c
+++ b/libavcodec/x264.c
@@ -150,7 +150,7 @@ X264_init(AVCodecContext *avctx)
if(avctx->flags & CODEC_FLAG_QSCALE && avctx->global_quality > 0)
x4->params.rc.i_qp_constant =
- 12 + 6 * log2((double) avctx->global_quality / FF_QP2LAMBDA);
+ 12 + 6 * av_log2((double) avctx->global_quality / FF_QP2LAMBDA);
x4->params.i_width = avctx->width;
x4->params.i_height = avctx->height;