Add support for watermarks to themes


Originally, themes were supposed to also define watermark to be used in processing. This not just includes uploading (and storing) the actual watermark, but also the ability to set a position of the watermark.

While this feature has never been completely implemented, the current state of the codebasis is quite close to be able to support watermarks on theme level.

To achieve this task, the following sub-tasks will need to be performed:

  • Resurrect the form Configuration->Themes->"Theme Details"->Watermark

  • Make sure that WOH theme provides enough information so that an appropriate workflow definition can implement the processing of watermarks

  • Adjust publish workflow to actual implement the watermarks as defined in the theme


Sven Stauber
November 16, 2016, 10:49 PM

Dear all,

I'm looking for a reviewer for pull request #1203 (see [1]).

PR #1203 resurrects a feature the was already included in Opencast 2.0 but hidden since the implementation was incomplete: Watermark support for themes.

What does the feature do?

Themes now have the tab "Watermark" again. In that tab, the user can upload an image supposed to be used as watermark and enable/disable watermarking. Of course, this requires a workflow taking care of actually implementing watermarking which is provided in the pull request, too.

In overall, this completes the original themes capabilities: intro video, outro video, title slide video and, finally, support for watermarking.



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Fixed and reviewed


Sven Stauber


Sven Stauber

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Fix versions