On Mon 31-Aug-2009 at 18:44 -0700, Elvis wrote:
>
>p f1 w2007 h469 v272  E0 R0 S10,2000,30,450 n"TIFF_m c:NONE"
>
>the number S10,2000,30,450 is exactly the left, right top, bottom of
>the region

>p f0 w1000 h500 v120 n"TIFF_m c:LZW r:CROP"

The r:CROP thing is a related but different concept.

The the 'S' parameter forces the outer cropped area to not be 
rendered by nona, the r:CROP parameter writes a special TIFF file 
where these 'empty' pixels are not stored in the file.

>How to set the region from command line ?

You can't when rendering with nona, you can when blending with the 
enblend -f parameter.

For nona you need to rewrite the .pto project with a simple script 
or a tool like ptoset.

-- 
Bruno

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