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-rw-r--r--libavcodec/cook.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index bc262f19b0..65e16e4077 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -832,8 +832,8 @@ static void joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer1,
cpl_tmp = cplband[i];
idx -= decouple_tab[cpl_tmp];
cplscale = q->cplscales[p->js_vlc_bits - 2]; // choose decoupler table
- f1 = cplscale[decouple_tab[cpl_tmp]];
- f2 = cplscale[idx - 1];
+ f1 = cplscale[decouple_tab[cpl_tmp] + 1];
+ f2 = cplscale[idx];
q->decouple(q, p, i, f1, f2, decode_buffer, mlt_buffer1, mlt_buffer2);
idx = (1 << p->js_vlc_bits) - 1;
}