Apply an overlay

Create a custom overlay template

Overlay - Video vs Event information

Game Time

Use Cases


Overlay is a feature available in the Live and Replay workspaces. This feature allows different information to be displayed directly onto the video, providing context and giving viewers clues about what they are seeing.

Example of an overlay: the game time and score are displayed at the top of the video, while the event label and three keywords of the categories "Detail", "Player" and "Period" are visible at the bottom


Various overlay templates can be used to display relevant information on the video and add context when watching clips: 

  • Game time 
  • Event Label
  • Game time + Event Label
  • Game time + Event Label + Event Keywords
  • Game time + Event Label + Event Keywords + Score

The last two overlays require some customization.


The overlays can be added on videos in the Live and Replay workspaces. The overlay is embedded in the video if the video is exported locally or shared on dartfish.tv. If an event is added from Replay or Live to the montage with an overlay, this overlay will appear in the montage.


Apply an overlay

  • Go to the Replay workspace
  • Open a tagged video in the tray
  • Open the Data Overlay menu on the left of the video
  • Select one of the simple overlays available (those overlays do not require a configuration)
  • Ensure that Show Data Overlay is enabled


Creating a custom overlay template

The overlays using the Score and/or Keywords require some configuration, as they are based on event keyword categories from the tagging data.

  • The three event keyword categories needs to be defined
  • The scoreboard is built based on an event keyword category that indicates the score. The names of the teams come from a video keyword category

To build a custom overlay template:

  • Select one of the 4 templates highlighted in the above screenshot
  • Then click on Customize Data Overlay to open the overlay editor

  • A preview of the overlay is displayed in the centre. On the left, you can see the settings of the various widgets of the overlays
  • Enable or disable the widgets by ticking/unticking the eye icons
  • Event -3Keywords: Use the drop-down menu to select the categories that will be used in the overlay. Those categories depend on the game opened in the Replay workspace and its tagging
  • Game Info
    • Score: Select the keyword categories that indicate the game score. This needs to be an event keyword category; it can not be a video keyword category
    • Teams: Select the keyword category that lists the two teams playing in the game. This needs to be a video keyword category. Both teams need to belong to the same category (i.e., it is not possible to have a category "Home Team" and a category "Away Team"
  • Once the overlay is customized, leave the overlay editor by clicking on the Close button at the top right of the window
  • The last step is to save the overlay by clicking on Data Overlays > Save Current Overlays.... This will save the custom overlay as a .dfovl file on the local drive

Overlay - Video vs Event information

Overlays display information that belongs to the video or to events

  • "Game time" and "Score" belong to the video and are always displayed on the video
  • "Event label" and "Event keywords" belong to events. They are displayed in event mode only, not in video mode


As a consequence, the functions "Export & Share > Share Video" and "Export & Share > Export Video" do not include the Event Label and Event Keyword wifgets of the overlay



Game Time

A timer called Game Time is available at the top of the Tagging Panel pane. Once you click on Start Game Time, the timer synchronizes with the video time and will increase or decrease if the video is played forward or backward.


Game time for football


A specific game time formatting for football is available. It takes into account 2 x 45-minute periods, 2 x 15-minute extra time and shows the overtime for each of those 4 periods. To enable the football format, select the corresponding period in the period selector just below the game time (1ST, 2ND, ET1 or ET2). This works best when one video per period has been recorded




Use Cases 

Give context to the video in Dartfish and in external environment

The feature gives the possibility to export video with information displayed by the overlay. This information is playable in every external video player. It is very useful for people that are sharing videos trough USB key and want to give context to every scene. 

STEPS

  1. Open Dartfish.
  2. Go in Live or Replay workspaces (In Live start a recording and in Replay open a video).
  3.  Select the overlay with the information that you want display.

        4. The Game time is directly displayed onto the video.

        5. Tag some events in the video.

        6. Open a tag by double-clicking on the scene in the event list.

        7. The Label, the position and the duration of the event are displayed onto the video.

        8. Select share video and export in local. 

        9. Overlay information are now displayed in external video player.


Add soccer game time to videos

The overlays make it possible to display the actual playing time for football. It helps coaches that received stream without game time to encrust the information directly on the video. This option will also display the overtime and the extra time in case of prolongation.

 STEPS

  1. Open Dartfish.
  2. Go in Live workspace and start a recording
  3. Select the Game Time overlay

4. Open the tagging panel tab and select 1st period

        5. At the kick-off Click on the “reset clock” button to reset the game time at 00:00

        6. Stop the recording after first period

        7. Start a recording for the second period 

        8. In the tagging panel select 2nd period 

        9. At kick-off of the 2nd period reset the clock (point 5) 

      10. Repeat the steps for the extra time 



Simplify communication between coaches when they exchange montage item

With the inlay of information on the video provided by the overlay: the position of the event/video in the montage is now directly displayed on the video. It helps coaches to communicate which event of the montage they want keep when they share their work.

 

STEPS

  1. Record or open a video with the event label overlay
  2. Tag some events

           3.  Add the tags or the video in the montage

        4. Open the Edit workspace

        5. The position of the video in the montage is now displayed on the video

        6. This information will also be displayed in every external video player