[FFmpeg-devel] [PATCH] nvenc set slice number to 1 to improve encoding quality

Agatha Hu ahu at nvidia.com
Mon Dec 7 07:48:43 CET 2015


---
  libavcodec/nvenc.c | 11 +++++++++++
  1 file changed, 11 insertions(+)

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 43b8e78..f0e5a19 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -762,6 +762,17 @@ static av_cold int nvenc_encode_init(AVCodecContext 
*avctx)
          }
      }

+    switch (avctx->codec->id) {
+    case AV_CODEC_ID_H264:
+        ctx->encode_config.encodeCodecConfig.h264Config.sliceMode = 3;
+        ctx->encode_config.encodeCodecConfig.h264Config.sliceModeData = 1;
+        break;
+    case AV_CODEC_ID_H265:
+        ctx->encode_config.encodeCodecConfig.hevcConfig.sliceMode = 3;
+        ctx->encode_config.encodeCodecConfig.hevcConfig.sliceModeData = 1;
+        break;
+    }
+
      /* when there're b frames, set dts offset */
      if (ctx->encode_config.frameIntervalP >= 2)
          ctx->last_dts = -2;
-- 
1.9.5.github.0





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