diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index 837c3b7538..8d1bd16a8e 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -761,6 +761,11 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
     if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
         goto end;
 
+    // set decode_error_flags to allow users to detect concealed decoding errors
+    if ((ret < 0 || h->slice_ctx->er.error_occurred) && h->cur_pic_ptr) {
+        h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
+    }
+
     ret = 0;
 end: