From 0c082565965258dca143767cc6cb25e38b6e9ea3 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Sun, 2 Feb 2014 23:05:58 +0000
Subject: [PATCH] asfdec: short-circuit seeking to the start of stream

Bug-id: 43

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
---
 libavformat/asfdec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c
index e754cb2d2c..8580ce0462 100644
--- a/libavformat/asfdec.c
+++ b/libavformat/asfdec.c
@@ -1465,6 +1465,13 @@ static int asf_read_seek(AVFormatContext *s, int stream_index,
             return ret;
     }
 
+    /* explicitly handle the case of seeking to 0 */
+    if (!pts) {
+        asf_reset_header(s);
+        avio_seek(s->pb, s->data_offset, SEEK_SET);
+        return 0;
+    }
+
     if (!asf->index_read)
         ret = asf_build_simple_index(s, stream_index);