From d85be17a004e7d55dff114bb5ccc592e0d1c52c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Thu, 14 Jan 2010 12:56:12 +0100
Subject: [PATCH] assrender: Make sure that the video buffer is writable before
 writing to it

---
 ext/assrender/gstassrender.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ext/assrender/gstassrender.c b/ext/assrender/gstassrender.c
index f4cf5e2dc3..1845f8b128 100644
--- a/ext/assrender/gstassrender.c
+++ b/ext/assrender/gstassrender.c
@@ -1024,6 +1024,7 @@ gst_ass_render_chain_video (GstPad * pad, GstBuffer * buffer)
       return ret;
     }
 
+    buffer = gst_buffer_make_writable (buffer);
     render->blit (render, ass_image, buffer);
   }