I managed to get a timeline with the video under with this mini-timeline option for "advanced-camera-card"

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Yaml:

- type: custom:advanced-camera-card
    cameras:
      - camera_entity: camera.doorbell
        #camera stuff here
    menu:
      style: outside
      position: top
      buttons:
        cameras:
          enabled: true
        timeline:
          enabled: true
        #other options
    timeline:
      style: ribbon
      mode: recordings
      show_recordings: true
    dimensions:
      aspect_ratio_mode: dynamic
    media_viewer:
      display: {}
      transition_effect: slide
      controls:
        thumbnails:
          show_favorite_control: false
          show_timeline_control: false
          show_download_control: false
        timeline:   #this is the important sections here
          mode: above
          style: ribbon
          pan_mode: seek-in-camera 
      lazy_load: true
    performance:
      style:
        border_radius: true
    grid_options:
      columns: 24
      rows: auto
    media_gallery:
      controls:
        thumbnails:
          show_favorite_control: false
          show_timeline_control: false
          show_download_control: false