From 9470b541e5c4c4131723df09b0f7fb248b7ee1b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=B5=D1=80=D0=B6=20=D0=9D=D0=B8=D1=81=D0=BA=D0=BE?=
 =?UTF-8?q?=D1=80=D0=BE=D0=B4=D0=BE=D0=B2?= <sghpunk@gmail.com>
Date: Fri, 12 Apr 2013 10:02:01 +0200
Subject: [PATCH] af_pan: fix parsing arguments from the example in the
 documentation

pan=stereo: FL < FL + 0.5*FC + 0.6*BL + 0.6*SL : FR < FR + 0.5*FC +
0.6*BR + 0.6*SR

didn't actually work ('Expected out channel name, got " FL < FL"')
---
 libavfilter/af_pan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/af_pan.c b/libavfilter/af_pan.c
index 038a8a1157..4fa81ab7fb 100644
--- a/libavfilter/af_pan.c
+++ b/libavfilter/af_pan.c
@@ -60,7 +60,7 @@ static int parse_channel_name(char **arg, int *rchannel, int *rnamed)
     int64_t layout, layout0;
 
     /* try to parse a channel name, e.g. "FL" */
-    if (sscanf(*arg, "%7[A-Z]%n", buf, &len)) {
+    if (sscanf(*arg, " %7[A-Z] %n", buf, &len)) {
         layout0 = layout = av_get_channel_layout(buf);
         /* channel_id <- first set bit in layout */
         for (i = 32; i > 0; i >>= 1) {