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| author | Yu-Jie Lin <livibetter@gmail.com> | 2011-07-30 19:13:43 +0800 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2011-07-31 14:26:08 +0200 |
| commit | 1442d295337dfc83fb66b20444c1b09a803ebb80 (patch) | |
| tree | 187cf147fca63957498d0f84d6a6ffe04ec7d9f4 /doc/indevs.texi | |
| parent | 085791a92e239875fed560c34db87e98083f4092 (diff) | |
| download | ffmpeg-1442d295337dfc83fb66b20444c1b09a803ebb80.tar.gz | |
x11grab: add show_region AVOption.
Draw the current grabbing region for indication.
Signed-off-by: Yu-Jie Lin <livibetter@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'doc/indevs.texi')
| -rw-r--r-- | doc/indevs.texi | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/indevs.texi b/doc/indevs.texi index aa001cdb63..fa21c099d5 100644 --- a/doc/indevs.texi +++ b/doc/indevs.texi @@ -271,4 +271,23 @@ ffmpeg -f x11grab -follow_mouse centered -r 25 -s cif -i :0.0 out.mpg ffmpeg -f x11grab -follow_mouse 100 -r 25 -s cif -i :0.0 out.mpg @end example +@subsection @var{show_region} AVOption + +The syntax is: +@example +-show_region 1 +@end example + +If @var{show_region} AVOption is specified with @var{1}, then the grabbing +region will be indicated on screen. With this option, it's easy to know what is +being grabbed if only a portion of the screen is grabbed. + +For example: +@example +ffmpeg -f x11grab -show_region 1 -r 25 -s cif -i :0.0+10,20 out.mpg + +# With follow_mouse +ffmpeg -f x11grab -follow_mouse centered -show_region 1 -r 25 -s cif -i :0.0 out.mpg +@end example + @c man end INPUT DEVICES |