ChromaForamt for mjpeg-qsv is always set to yuv420, and this will be
wrong when encode other pixel format (for example yuyv422). ChromaFormat
is changed to be adaptive to pix_fmt.

Signed-off-by: Wenbin Chen <wenbin.c...@intel.com>
---
 libavcodec/qsvenc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 07be4287b7..3d9dfb13b0 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -616,7 +616,8 @@ static int init_video_param_jpeg(AVCodecContext *avctx, 
QSVEncContext *q)
     q->param.mfx.FrameInfo.CropH          = avctx->height;
     q->param.mfx.FrameInfo.AspectRatioW   = avctx->sample_aspect_ratio.num;
     q->param.mfx.FrameInfo.AspectRatioH   = avctx->sample_aspect_ratio.den;
-    q->param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;
+    q->param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420 +
+                                            !desc->log2_chroma_w + 
!desc->log2_chroma_h;
     q->param.mfx.FrameInfo.BitDepthLuma   = desc->comp[0].depth;
     q->param.mfx.FrameInfo.BitDepthChroma = desc->comp[0].depth;
     q->param.mfx.FrameInfo.Shift          = desc->comp[0].depth > 8;
-- 
2.32.0

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