From d7743cf7c6a654276ebc00c918069b25ea1e3f89 Mon Sep 17 00:00:00 2001
From: Dirk Van Haerenborgh <vhdirk@gmail.com>
Date: Sun, 10 Mar 2013 09:25:34 +0100
Subject: [PATCH] avidemux: support raw video with negative height

https://bugzilla.gnome.org/show_bug.cgi?id=695541
---
 gst/avi/gstavidemux.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gst/avi/gstavidemux.c b/gst/avi/gstavidemux.c
index 49364eb..8bc0107 100644
--- a/gst/avi/gstavidemux.c
+++ b/gst/avi/gstavidemux.c
@@ -4544,6 +4544,10 @@ gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
     return buf;                 /* Ignore non DIB buffers */
   }
 
+  /* raw rgb data is stored topdown, but instead of inverting the buffer, */
+  /* some tools just negate the height field in the header (e.g. ffmpeg) */
+  if (((gint32) stream->strf.vids->height) < 0)
+    return buf;
 
   h = stream->strf.vids->height;
   w = stream->strf.vids->width;
-- 
2.7.4