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doc/indevs: rework options description in the x11 grab section

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Create a dedicated options subchapter, rather than a subchapter for each
option.

This is more consistent with the rest of the docs. Also apply misc minor
fixes for improving rendering.
This commit is contained in:
Stefano Sabatini 2012-08-08 10:16:26 +02:00
parent 7794ddeae3
commit 083754f2be
1 changed files with 19 additions and 18 deletions
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37
doc/indevs.texi
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@ -635,12 +635,12 @@ ffmpeg -f x11grab -r 25 -s cif -i :0.0 out.mpg
ffmpeg -f x11grab -r 25 -s cif -i :0.0+10,20 out.mpg
@end example
@subsection @var{follow_mouse} AVOption
@subsection Options
The syntax is:
@example
-follow_mouse centered|@var{PIXELS}
@end example
@table @option
@item follow_mouse
Make the grabbed area follow the mouse. The argument can be
@code{centered} or a number of pixels @var{PIXELS}.
When it is specified with "centered", the grabbing region follows the mouse
pointer and keeps the pointer at the center of region; otherwise, the region
@ -650,28 +650,29 @@ zero) to the edge of region.
For example:
@example
ffmpeg -f x11grab -follow_mouse centered -r 25 -s cif -i :0.0 out.mpg
@end example
# Follows only when the mouse pointer reaches within 100 pixels to edge
To follow only when the mouse pointer reaches within 100 pixels to edge:
@example
ffmpeg -f x11grab -follow_mouse 100 -r 25 -s cif -i :0.0 out.mpg
@end example
@subsection @var{show_region} AVOption
@item show_region
Show grabbed region on screen.
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.
If @var{show_region} is specified with @code{1}, then the grabbing
region will be indicated on screen. With this option, it is 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
With @var{follow_mouse}:
@example
ffmpeg -f x11grab -follow_mouse centered -show_region 1 -r 25 -s cif -i :0.0 out.mpg
@end example
@end table
@c man end INPUT DEVICES