diff --git a/libavcodec/midivid.c b/libavcodec/midivid.c
index 69f9f4d0ec..4a3ba33f11 100644
--- a/libavcodec/midivid.c
+++ b/libavcodec/midivid.c
@@ -288,5 +288,5 @@ const AVCodec ff_mvdv_decoder = {
     .flush          = decode_flush,
     .close          = decode_close,
     .capabilities   = AV_CODEC_CAP_DR1,
-    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };