From: Tomas Härdin <tjoppen@acc.umu.se>
Date: Mon, 19 Feb 2018 17:42:25 +0000 (+0100)
Subject: Add -vf scale example for making pixels square
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=41317da325921d39834b65d8552a2ebb2f3e802b;hp=fd76e7be70c10861567ebefd0bc6864f223fb017;p=ffmpeg

Add -vf scale example for making pixels square

This is a common use case.
---

diff --git a/doc/filters.texi b/doc/filters.texi
index bd93e0ab84f..8a9b78d778b 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -13721,6 +13721,19 @@ keeping the same aspect ratio as the input:
 @example
 scale=w='min(500\, iw*3/2):h=-1'
 @end example
+
+@item
+Make pixels square by combining scale and setsar:
+@example
+scale='trunc(ih*dar):ih',setsar=1/1
+@end example
+
+@item
+Make pixels square by combining scale and setsar,
+making sure the resulting resolution is even (required by some codecs):
+@example
+scale='trunc(ih*dar/2)*2:trunc(ih/2)*2',setsar=1/1
+@end example
 @end itemize
 
 @subsection Commands