[FFmpeg-devel] [PATCH] avcodec/libvpxenc: Set min/max quantizer to 0 for lossless mode
Michael Niedermayer
michaelni at gmx.at
Fri Mar 20 17:02:46 CET 2015
Fixes Ticket4246
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
libavcodec/libvpxenc.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 7f7d4ae..176c6b6 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -330,10 +330,15 @@ static av_cold int vpx_init(AVCodecContext *avctx,
}
}
- if (avctx->qmin >= 0)
- enccfg.rc_min_quantizer = avctx->qmin;
- if (avctx->qmax >= 0)
- enccfg.rc_max_quantizer = avctx->qmax;
+ if (avctx->codec_id == AV_CODEC_ID_VP9 && ctx->lossless == 1) {
+ enccfg.rc_min_quantizer =
+ enccfg.rc_max_quantizer = 0;
+ } else {
+ if (avctx->qmin >= 0)
+ enccfg.rc_min_quantizer = avctx->qmin;
+ if (avctx->qmax >= 0)
+ enccfg.rc_max_quantizer = avctx->qmax;
+ }
if (enccfg.rc_end_usage == VPX_CQ
#if CONFIG_LIBVPX_VP9_ENCODER
--
1.7.9.5
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