1 files changed, 7 insertions, 1 deletions
diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index e13026628d..5bb84793b5 100644
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -311,7 +311,13 @@ av_cold int ff_dvvideo_init(AVCodecContext *avctx)
     /* 248DCT setup */
     s->fdct[1]     = dsp.fdct248;
     s->idct_put[1] = ff_simple_idct248_put;  // FIXME: need to add it to DSP
-    memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
+    if (avctx->lowres){
+        for (i = 0; i < 64; i++){
+            int j = ff_zigzag248_direct[i];
+            s->dv_zigzag[1][i] = dsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2];
+        }
+    }else
+        memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
 
     avctx->coded_frame = &s->picture;
     s->avctx = avctx;