How do I convert all RGB images to CMYK for PACKAGING - InDesign CC?

I understand that they can be exported as a CMYK pdf - but I'm splitting a project with another designer and she needs to get me all of her files - many of which are RGB - need them CMYK. Thanks!

You can't convert the color mode of links during packaging -- and you don't need to, most likely. Why do you think you must have CMYK? Unless you know the correct output space now, and have no plans to re-purpose the file in the future (and even if those things are true and you don't need to make post conversion adjustments to the color) there is no advantage, and plenty of disadvantage, to converting to CMYK before export.

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Hello,
Can anyone explain in a step-by-step way how to batch-convert many RGB images to CMYK?
Thanks in advance

If you do want to use Photoshop for the bact conversion there are a few ways, including Batch and Image Procesor under the File>Automate or File>Scripts of PS.
However, my preference is to use Russell Brown's script: Image Processsor Pro, via Bridge:
http://www.russellbrown.com/scripts.html
As similar one is Picture Processor:
http://www.scriptsrus.talktalk.net/
Both allow you to do multiple conversions simultaneously, to different sizes and file types, and running actions before or after the conversions.

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I am working with a CMYK Freehand design, and it includes a
cut out image on top layer. The image is in RGB. When I export it,
I am getting a colour shift on the transparent areas.
Should I be working with a CMYK cut out image? If so, how do
I convert my RGB image to CMYK, keeping the transparent areas of
the cut out?
Help much appreciated (ASAP)
Regards
Geoff

GmR wrote:
> I am working with a CMYK Freehand design, and it
includes a cut out image on
> top layer. The image is in RGB. When I export it, I am
getting a colour shift
> on the transparent areas.
>
> Should I be working with a CMYK cut out image? If so,
how do I convert my RGB
> image to CMYK, keeping the transparent areas of the cut
out?
>
> Help much appreciated (ASAP)
> Regards
How are you creating the transparent areas? Are you using an
alpha
channel in the bitmap? I stopped doing that when I noticed
color
shifting (even in grayscale reproduction) similar to what you
get when
using the raster effects. But I do miss using it because it
is
convenient and sets up nicely.

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Hi,
I am trying to use PDDocColorConvertPage to convert all RGB images in a PDF document to CMYK (with a color profile).
I can see the API is performing some changes to the PDF however it is not performing the conversion in the same way as Photoshop or Acrobat.
Has anyone tried to do this before? Am I doing it the correct way?
Thanks
Please see additional details below:
Input image:
Converted pdf: http://www.fallenempires.net/misc/out.pdf
Path = ASFileSysCreatePathFromCString (NULL, CMYK_PROFILE);
    err = ASFileSysOpenFile (NULL, Path, ASFILE_READ, &Profile);
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        exit (-1);
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    colorConvertAction[0].mConvertIntent = AC_UseProfileIntent;
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    colorParams->mNumInks = 0;
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In that case am I using incorrect parameters in the code snippet? The code below does not convert the RGB->CMYK properly.
    inPath = ASFileSysCreatePathFromDIPath( NULL, argv[1] , NULL );
    pdDoc = PDDocOpen( inPath , ASGetDefaultFileSys() , NULL , false );
    ASFileSysReleasePath( NULL , inPath );
    PDColorConvertParams colorParams = (PDColorConvertParams) calloc( 1 , sizeof(PDColorConvertParamsRec) );
    PDColorConvertAction colorConvertAction = (PDColorConvertAction) calloc( 1 , sizeof( PDColorConvertActionRec ) );
    ASBool pageChanged = false;
    AC_Profile workingProfile;
    ACGetWorkingSpaceProfile (kACWorkingCMYK, &workingProfile);
    //Populate the PDColorConvertAction data members
    colorConvertAction[0].mMatchAttributesAny = -1;//kColorConvObj_AnyObject;
    colorConvertAction[0].mMatchSpaceTypeAny = -1;//kColorConvAnySpace;
    colorConvertAction[0].mMatchIntent= AC_UseProfileIntent;
    colorConvertAction[0].mConvertIntent = AC_UseProfileIntent;
    colorConvertAction[0].mConvertProfile= workingProfile;
    colorConvertAction[0].mEmbed = true;
    colorConvertAction[0].mPreserveBlack = true;
    colorConvertAction[0].mUseBlackPointCompensation= true;
    colorConvertAction[0].mAction = kColorConvConvert;
    colorConvertAction[0].mIsProcessColor = false;
    colorParams->mActions = colorConvertAction;
    colorParams->mNumActions = 1;
    colorParams->mInks = NULL;
    colorParams->mNumInks = 0;
    pageChanged = false;
    PDDocColorConvertPage( pdDoc , colorParams , 0 , NULL , NULL , 0 , NULL , &pageChanged );
    printf( "page changed to CMYK\n" );
    /* save document to a file */
    outPath = ASFileSysCreatePathFromDIPath( NULL, argv[2] , NULL );
    PDDocSave(pdDoc, PDSaveFull | PDSaveLinearized, outPath, ASGetDefaultFileSys(), NULL, NULL);
    printf( "File saved\n" );

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When in my workflow should I be converting images to CMYK for print publication?
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How do I convert all RGB images to CMYK for PACKAGING - InDesign CC?

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