Rute Santos developed the Speech-to-Text: Source Tags Filtering feature for the opencast/opencast repository, enabling selective processing of media tracks in speech-to-text workflows. She updated the Java-based workflow operation handler to filter tracks by source-tags, allowing targeted media processing and improved workflow control. Rute also revised the Markdown documentation to describe the new parameter and its usage, ensuring clarity for future users. Her work focused on backend development and workflow management, addressing the need for more efficient compute resource usage. The feature’s depth lies in its integration with existing media processing pipelines, providing a practical solution for selective track handling.