As many of you probably know, Google does not allow you to change the buttons of their chromecast remote. We don’t use Netflix at all, but we use Jellyfin. I just though of it and tested it, but Home assistant allows you to track the chromecast and functionality replace one app with another. Making the button now open the jellyfin app

alias: Replace google chromecast nexflix with whoflix
description: >-
  Google does not allow you to re-map the netflix button, but we can launch
  jellyfin when its trying to launch netflix. And thus effectivly replacing the
  button
triggers:
  - trigger: state
    entity_id:
      - remote.woonkamer_tv
    attribute: current_activity
    to:
      - com.netflix.ninja
conditions: []
actions:
  - action: media_player.play_media
    metadata: {}
    target:
      entity_id: media_player.woonkamer_tv
    data:
      media:
        media_content_id: org.jellyfin.androidtv
        media_content_type: app
mode: single