[FFmpeg-devel] [PATCH] libavcodec/qsvenc: Enable 444 encoding for RGB input

[wenbin.chen at intel.com]

From: Wenbin Chen <wenbin.chen at intel.com>

MSDK/VPL uses 420 chroma format as default to encode RGB, and this is
not a proper usage. Now enable 444 encoding for RGB input by default.
RGB is encoded using 444 chroma format when user doesn't specify the
profile or uses rext profile, otherwise, 420 is used.

Signed-off-by: Wenbin Chen <wenbin.chen at intel.com>
---
 libavcodec/qsvenc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 514a1e8148..150fc9c729 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -1088,6 +1088,10 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
                 q->extco3.MaxFrameSizeI = q->max_frame_size_i;
             if (q->max_frame_size_p >= 0)
                 q->extco3.MaxFrameSizeP = q->max_frame_size_p;
+            if (sw_format == AV_PIX_FMT_BGRA &&
+                (q->profile == MFX_PROFILE_HEVC_REXT ||
+                q->profile == MFX_PROFILE_UNKNOWN))
+                q->extco3.TargetChromaFormatPlus1 = MFX_CHROMAFORMAT_YUV444 + 1;
 
             q->extco3.ScenarioInfo = q->scenario;
         }
-- 
2.34.1