diff --git a/libavcodec/frame_thread_encoder.c b/libavcodec/frame_thread_encoder.c
index 35a37c4372..31a9fe9dae 100644
--- a/libavcodec/frame_thread_encoder.c
+++ b/libavcodec/frame_thread_encoder.c
@@ -199,6 +199,9 @@ int ff_frame_thread_encoder_init(AVCodecContext *avctx, AVDictionary *options){
             goto fail;
         tmpv = thread_avctx->priv_data;
         *thread_avctx = *avctx;
+        int ret = av_opt_copy(thread_avctx, avctx);
+        if (ret < 0)
+            goto fail;
         thread_avctx->priv_data = tmpv;
         thread_avctx->internal = NULL;
         if (avctx->codec->priv_class) {