This allows it to use the defaults specified by preset/tune,
without overwriting it with the default value from the
AVCodecContext field.
---
libavcodec/options.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libavcodec/options.c b/libavcodec/options.c
index ef7a39a..e747408 100644
--- a/libavcodec/options.c
+++ b/libavcodec/options.c
@@ -492,7 +492,7 @@ static const AVOption options[]={
{"psy_trellis", "specify psycho visual trellis", OFFSET(psy_trellis),
AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, V|E},
{"aq_mode", "specify aq method", OFFSET(aq_mode), AV_OPT_TYPE_INT, {.dbl = -1
}, -1, INT_MAX, V|E},
{"aq_strength", "specify aq strength", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT,
{.dbl = -1.0 }, -1, FLT_MAX, V|E},
-{"rc_lookahead", "specify number of frames to look ahead for frametype",
OFFSET(rc_lookahead), AV_OPT_TYPE_INT, {.dbl = 40 }, 0, INT_MAX, V|E},
+{"rc_lookahead", "specify number of frames to look ahead for frametype",
OFFSET(rc_lookahead), AV_OPT_TYPE_INT, {.dbl = -1 }, -1, INT_MAX, V|E},
{"ssim", "ssim will be calculated during encoding", 0, AV_OPT_TYPE_CONST,
{.dbl = CODEC_FLAG2_SSIM }, INT_MIN, INT_MAX, V|E, "flags2"},
{"intra_refresh", "use periodic insertion of intra blocks instead of
keyframes", 0, AV_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_INTRA_REFRESH }, INT_MIN,
INT_MAX, V|E, "flags2"},
{"crf_max", "in crf mode, prevents vbv from lowering quality beyond this
point", OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 51, V|E},
--
1.7.3.1
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