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-rw-r--r--src/j2k_transcode.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/j2k_transcode.cc b/src/j2k_transcode.cc
index b9ebe6c3..dafe8fdf 100644
--- a/src/j2k_transcode.cc
+++ b/src/j2k_transcode.cc
@@ -308,6 +308,7 @@ dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frame
parameters.max_comp_size = parameters.max_cs_size / 1.25;
parameters.tcp_numlayers = 1;
parameters.tcp_mct = 1;
+ parameters.numgbits = fourk ? 2 : 1;
/* Setup the encoder parameters using the current image and user parameters */
opj_setup_encoder (encoder, &parameters, xyz->opj_image());