diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 4fe1738dea..fd549c7913 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -360,8 +360,6 @@ static int decode_slice(AVCodecContext *c, void *arg)
         }
     }
 
-    emms_c();
-
     ff_thread_report_progress(&f->picture, si, 0);
 
     return 0;
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 90593fbaf1..b939871664 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -1076,7 +1076,6 @@ retry:
     } else {
         ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
     }
-    emms_c();
 
     if (ret < 0) {
         av_assert0(fs->slice_coding_mode == 0);