[x265] [PATCH] ratecontrol: do not low-clip first I frame with ABR

[Steve Borho]

# HG changeset patch
# User Steve Borho <steve at borho.org>
# Date 1399895476 18000
#      Mon May 12 06:51:16 2014 -0500
# Node ID 3cf70d49bf00b3ef9cb56dd9c3c797a84fd53ecf
# Parent  8b75aa2cc06d70fa7afe03369b3e308ef25b0718
ratecontrol: do not low-clip first I frame with ABR

diff -r 8b75aa2cc06d -r 3cf70d49bf00 source/encoder/ratecontrol.cpp
--- a/source/encoder/ratecontrol.cpp	Mon May 12 06:49:53 2014 -0500
+++ b/source/encoder/ratecontrol.cpp	Mon May 12 06:51:16 2014 -0500
@@ -584,10 +584,9 @@
         }
         else if (framesDone == 0 && !isVbv)
         {
-            /* for ABR alone, clipe the first I frame qp within the range (ABR_INIT_QP_MIN, ABR_INIT_QP_MAX) to ensure quality. */
-            double lqmin = x265_qp2qScale(ABR_INIT_QP_MIN) / lstep;
+            /* for ABR alone, clip the first I frame qp */
             double lqmax = x265_qp2qScale(ABR_INIT_QP_MAX) * lstep;
-            q = Clip3(lqmin, lqmax, q);
+            q = X265_MIN(lqmax, q);
         }
 
         q = Clip3(MIN_QPSCALE, MAX_MAX_QPSCALE, q);