[FFmpeg-cvslog] doc/filters: warn about gaps/overlaps in xstack

Gyan Doshi git at videolan.org
Thu Sep 26 19:19:03 EEST 2019

ffmpeg | branch: master | Gyan Doshi <ffmpeg at gyani.pro> | Thu Sep 26 22:04:55 2019 +0530| [b9f8ab3ef490738e7d459e2dbe1bfcb65a134d8e] | committer: Gyan Doshi

doc/filters: warn about gaps/overlaps in xstack

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b9f8ab3ef490738e7d459e2dbe1bfcb65a134d8e

 doc/filters.texi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 79a2b32aa0..5ad3927a95 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -19047,6 +19047,11 @@ where X is video input from which to take width or height.
 Multiple values can be used when separated by '+'. In such
 case values are summed together.
+Note that if inputs are of different sizes gaps may appear, as not all of
+the output video frame will be filled. Similarly, videos can overlap each
+other if their position doesn't leave enough space for the full frame of
+adjoining videos.
 For 2 inputs, a default layout of @code{0_0|w0_0} is set. In all other cases,
 a layout must be set by the user.

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