1 files changed, 1 insertions, 1 deletions
diff --git a/ffprobe.c b/ffprobe.c
index 954a829c4b..61c66aef1a 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -1516,7 +1516,7 @@ static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
 static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
 {
     char val_str[128];
-    int64_t size = avio_size(fmt_ctx->pb);
+    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
 
     print_section_header("format");
     print_str("filename",         fmt_ctx->filename);