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-rw-r--r--libs/ultrahdr/jpegencoderhelper.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/libs/ultrahdr/jpegencoderhelper.cpp b/libs/ultrahdr/jpegencoderhelper.cpp
index a03547b538..de621bd24f 100644
--- a/libs/ultrahdr/jpegencoderhelper.cpp
+++ b/libs/ultrahdr/jpegencoderhelper.cpp
@@ -140,7 +140,7 @@ void JpegEncoderHelper::setJpegCompressStruct(int width, int height, int quality
jpeg_set_quality(cinfo, quality, TRUE);
jpeg_set_colorspace(cinfo, isSingleChannel ? JCS_GRAYSCALE : JCS_YCbCr);
cinfo->raw_data_in = TRUE;
- cinfo->dct_method = JDCT_IFAST;
+ cinfo->dct_method = JDCT_ISLOW;
if (!isSingleChannel) {
// Configure sampling factors. The sampling factor is JPEG subsampling 420 because the