[FFmpeg-devel] [PATCH] doc/filters: itemize crop examples

[Clément Bœsch]

On Sat, Dec 15, 2012 at 05:03:45PM +0100, Stefano Sabatini wrote:
> ---
>  doc/filters.texi |   72 ++++++++++++++++++++++++++++++++++++++----------------
>  1 file changed, 51 insertions(+), 21 deletions(-)
> 
> diff --git a/doc/filters.texi b/doc/filters.texi
> index a8b6221..3f926c2 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -1610,41 +1610,71 @@ is approximated to the nearest valid value.
>  The expression for @var{x} may depend on @var{y}, and the expression
>  for @var{y} may depend on @var{x}.
>  
> -Follow some examples:
> + at subsection Examples
> + at itemize
> + at item
> +Crop the central input area with size 100x100:
>  @example
> -# crop the central input area with size 100x100
>  crop=100:100
> + at end example
>  
> -# crop the central input area with size 2/3 of the input video
> -"crop=2/3*in_w:2/3*in_h"
> + at item
> +Crop the central input area with size 2/3 of the input video:
> + at example
> +crop=2/3*in_w:2/3*in_h
> + at end example
>  
> -# crop the input video central square
> + at item
> +Crop the input video central square:
> + at example
>  crop=in_h
> + at end example
>  
> -# delimit the rectangle with the top-left corner placed at position
> -# 100:100 and the right-bottom corner corresponding to the right-bottom
> -# corner of the input image.
> + at item
> +Delimit the rectangle with the top-left corner placed at position
> +100:100 and the right-bottom corner corresponding to the right-bottom
> +corner of the input image:
> + at example
>  crop=in_w-100:in_h-100:100:100
> + at end example
>  
> -# crop 10 pixels from the left and right borders, and 20 pixels from
> -# the top and bottom borders
> -"crop=in_w-2*10:in_h-2*20"
> + at item
> +Crop 10 pixels from the left and right borders, and 20 pixels from
> +the top and bottom borders
> + at example
> +crop=in_w-2*10:in_h-2*20
> + at end example
>  
> -# keep only the bottom right quarter of the input image
> -"crop=in_w/2:in_h/2:in_w/2:in_h/2"
> + at item
> +Keep only the bottom right quarter of the input image:
> + at example
> +crop=in_w/2:in_h/2:in_w/2:in_h/2
> + at end example
>  
> -# crop height for getting Greek harmony
> -"crop=in_w:1/PHI*in_w"
> + at item
> +Crop height for getting Greek harmony:
> + at example
> +crop=in_w:1/PHI*in_w
> + at end example
>  
> -# trembling effect
> -"crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(n/10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(n/7)"
> + at item
> +Appply trembling effect:
> + at example
> +crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(n/10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(n/7)
> + at end example
>  
> -# erratic camera effect depending on timestamp
> -"crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(t*10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(t*13)"
> + at item
> +Apply erratic camera effect depending on timestamp:
> + at example
> +crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(t*10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(t*13)"
> + at end example
>  
> -# set x depending on the value of y
> -"crop=in_w/2:in_h/2:y:10+10*sin(n/10)"
> + at item
> +Set x depending on the value of y:
> + at example
> +crop=in_w/2:in_h/2:y:10+10*sin(n/10)
>  @end example
> + at end itemize
>  
>  @section cropdetect
>  

Looks OK. I guess you could commit such formatting improvement directly.

-- 
Clément B.
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