16-bit png renditions

[DamionD-321]

Hi,

I'm sure this is an easy one, but I can't see for looking.

In AEM Assets, when I upload a 16-bit png, I need the renditions it generates to also be 16-bit png. Currently, I can only get the system to generate 8-bit png's, so Im losing the alpha channel.

Any pointers will be much appreciated

Cheers

[MayurSatav · Accepted solution]

hi @DamionD-321 ,

You can create a custom workflow model to handle the generation of 16-bit PNG renditions. Here's an alternative approach:

1. Access the AEM Workflow Console:

   • Log in to your AEM author instance.
   • Navigate to Tools -> Workflow -> Models.
   • Click on the "Create" button to create a new workflow model.

2. Define the workflow model:

   • Give the workflow model a suitable title and name.
   • Add the "Thumbnail Process" step to the workflow model. This step is responsible for generating renditions.
   • Configure the "Thumbnail Process" step to generate the desired rendition sizes and formats.

3. Add a custom process step:

   • Add a custom process step after the "Thumbnail Process" step.
   • Configure the custom process step to execute a script that modifies the rendition options.

   Here's an example script that sets the rendition options for 16-bit PNG:

// Create custom rendition options
var renditionOptions = {
    mime: "image/png",
    quality: 1.0,
    bitDepth: 16
};

// Get the asset object
var asset = workflowData.getPayload();

// Update the rendition options for all renditions
asset.addRenditionOptions(renditionOptions);

4. Save and activate the workflow model.

This custom workflow model will generate 16-bit PNG renditions for your assets. You can initiate this workflow manually or configure it to run automatically when assets are uploaded or modified.

[DamionD-321]

Amazing, thank you so much.

I'll give this a go

Cheers

Damion