doc/filters: fix main/over mismatch in movie examples

Found-By: littlebat <dashing.meng@gmail.com>

diff --git a/doc/filters.texi b/doc/filters.texi
index 630db433cb1034cd7546325943d43c16fc1784bb..483d8a13e2dcd2c35e790cfb01dd393247f53c8a 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -7134,16 +7134,18 @@ movie --> scale--> deltapts1 -------+
 Skip 3.2 seconds from the start of the avi file in.avi, and overlay it
 on top of the input labelled as "in":
 @example
-movie=in.avi:seek_point=3.2, scale=180:-1, setpts=PTS-STARTPTS [movie];
-[in] setpts=PTS-STARTPTS, [movie] overlay=16:16 [out]
+movie=in.avi:seek_point=3.2, scale=180:-1, setpts=PTS-STARTPTS [over];
+[in] setpts=PTS-STARTPTS [main];
+[main][over] overlay=16:16 [out]
 @end example
 
 @item
 Read from a video4linux2 device, and overlay it on top of the input
 labelled as "in":
 @example
-movie=/dev/video0:f=video4linux2, scale=180:-1, setpts=PTS-STARTPTS [movie];
-[in] setpts=PTS-STARTPTS, [movie] overlay=16:16 [out]
+movie=/dev/video0:f=video4linux2, scale=180:-1, setpts=PTS-STARTPTS [over];
+[in] setpts=PTS-STARTPTS [main];
+[main][over] overlay=16:16 [out]
 @end example
 
 @item