diff --git a/libavformat/avio.c b/libavformat/avio.c
index 73b2a29801..5916e46a2e 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -241,6 +241,8 @@ int ffurl_alloc(URLContext **puc, const char *filename, int flags,
             return url_alloc_for_protocol (puc, up, filename, flags, int_cb);
     }
     *puc = NULL;
+    if (!strcmp("https", proto_str))
+        av_log(NULL, AV_LOG_WARNING, "https protocol not found, recompile with openssl or gnutls enabled.\n");
     return AVERROR_PROTOCOL_NOT_FOUND;
 }
 
diff --git a/libavformat/utils.c b/libavformat/utils.c
index bdee64484b..070c224ecd 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2859,6 +2859,8 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
 
                 if (!st->info->duration_error)
                     st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
+                if (!st->info->duration_error)
+                    return AVERROR(ENOMEM);
 
 //                 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
 //                     av_log(NULL, AV_LOG_ERROR, "%f\n", dts);