On Mon, 26 Sep 2005 [EMAIL PROTECTED] wrote:
> I have a problem with the version 1.8.0 in combination with the newest
> digikam-plugin (kipi-plugin for generate a mpg file for a images archiv).
I think something in the newest digikam-plugin is causing the
problem.
> I see the error from ppmto4yuv that "Error: maxval==255. Actual value is
> 65365" - this is in the read function of yuv-header.
That means that the digikam-plugin is generating 2 bytes/pixel PPM
data (values of 0 to 65535) instead of 1 byte/pixel (values of 0 to 255)
ppmtoy4m only accepts 1 byte/pixel PPM data (maximum value of 255).
> The plugin uses the script images4mpg and calls many different tools.
Perhaps something in one of those tools is producing PPM data with
a range of 0 - 65535 instead of the range 0 - 255.
Oh, and one more thing about ppmtoy4m - in 1.8.0 the default output
chroma sampling is 4:4:4. It will be necessary to either to use the
"-S option (see 'ppmtoy4m -h') or resample the chroma using y4mscaler
(see http://www.mir.com/DMG/Software/y4mscaler.html)
Cheers,
Steven Schultz
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