From 455db8cec1a7649e5d8e2aab659477a710e40b76 Mon Sep 17 00:00:00 2001 From: Mulvya Date: Sun, 3 Apr 2016 14:27:01 +0530 Subject: [PATCH] doc/filters: add drawtext example Show example which draws text at a random position, and switches positions every 30 seconds Signed-off-by: Mulvya --- doc/filters.texi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index 592fc24..c63ddde 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -6557,6 +6557,12 @@ drawtext="fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=(w-text_w)/2:y @end example @item +Show the text at a random position, switching to a new position every 30 seconds: +@example +drawtext="fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=if(eq(mod(t\,30)\,0)\,rand(0\,(w-text_w))\,x):y=if(eq(mod(t\,30)\,0)\,rand(0\,(h-text_h))\,y)" +@end example + +@item Show a text line sliding from right to left in the last row of the video frame. The file @file{LONG_LINE} is assumed to contain a single line with no newlines. -- 2.7.0.windows.1