diff mbox series

[FFmpeg-devel] avfilter/vf_drawtext: document expr for fontsize

Message ID 20200902225717.223162-1-rybak.a.v@gmail.com
State New
Headers show
Series [FFmpeg-devel] avfilter/vf_drawtext: document expr for fontsize
Related show

Checks

Context Check Description
andriy/default pending
andriy/make success Make finished
andriy/make_fate success Make fate finished

Commit Message

Andrei Rybak Sept. 2, 2020, 10:57 p.m. UTC
Expressions for parameter fontsize of video filter drawtext have been
supported since commit 6442e4ab3c (avfilter/vf_drawtext: added expr
evaluation to drawtext fontsize, 2017-04-18).

Add an example of using such expressions to documentation.

Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
---
 doc/filters.texi | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Gyan Doshi Sept. 3, 2020, 5:42 a.m. UTC | #1
On 03-09-2020 04:27 am, Andrei Rybak wrote:
> Expressions for parameter fontsize of video filter drawtext have been
> supported since commit 6442e4ab3c (avfilter/vf_drawtext: added expr
> evaluation to drawtext fontsize, 2017-04-18).
>
> Add an example of using such expressions to documentation.

Revised and applied as 5de8e897b1585fce973214532cf06cd98750f715

Thanks,
Gyan
diff mbox series

Patch

diff --git a/doc/filters.texi b/doc/filters.texi
index fb8757ff8f..ec386a6c55 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10233,6 +10233,12 @@  Use fontconfig to set the font. Note that the colons need to be escaped.
 drawtext='fontfile=Linux Libertine O-40\:style=Semibold:text=FFmpeg'
 @end example
 
+@item
+Draw "Test Text" of size, dependent on height of the video.
+@example
+drawtext="text='Test Text': fontsize=h/30: x=(w-text_w)/2: y=(h-text_h*2)"
+@end example
+
 @item
 Print the date of a real-time encoding (see strftime(3)):
 @example