Editor Control Bar Functions

The editor consists of a control bar and a preview window.

Timeline Editor Functions

The control bar contains the following functions.

Multiple Tracks in the Timeline Editor

The Timeline Editor supports multiple tracks for transition logic scenes. This allows graphics to overlap and play out correctly, but requires that all data elements are based on the same transition logic set.

The tracks reflect the layers in the transition logic scene. A track is displayed in the timeline editor if an element using that layer has been added.

Graphics from the same layer must not be overlapped, and the timeline editor will indicate a possible conflict by coloring the graphics placeholders red, as shown below:

Setting a Timeline Name

After adding graphics in the timeline editor, you can give a timeline name to the resulting composite element. If the timeline name is set, it is put into the MOS element (mosAbstract node), otherwise the video title will be used. The timeline name will be displayed in the newsroom story and in the playlist.

Reopening a MOS item in a newsroom system that supports updating the items, will also update the existing name.

Note that if you open an existing item that has a timeline name, the timeline name will remain the same when editing, but will not appear as a changed name next to the label. This enables you to override the timeline name again or set it back to empty if you wish to use the name that was previously set.

The atom XML generated by the timeline editor will have the timeline name set as the atom:title (this remains empty if not set).

You can:

• Hover your cursor over the video title/timeline name to see names in full.
  
  

  

  
  
  

• Set or edit the timeline name, by either:

  • Right-clicking the video name and select Set timeline name.

  • Hovering over the video name and pressing the Set timeline name button .

• Clear the timeline name by right-clicking the video name and selecting Clear timeline name.

Adding Graphics to a Video Clip Timeline

1. In Viz Pilot News, click the Media tab to search for videos.

2. Right-click the video item, and from the context menu select Open in Timeline Editor.

3. To add graphics, click the Add button

   • This will open the Template and Data Elements view.

4. Select a template or previously saved data element, and click OK.

   • Clicking OK will prompt the template or data element to be saved.

   • After it is saved you will see a graphics placeholder on the timeline.

5. Adjust the placeholder to set the desired duration of the animation.

6. Optional: Repeat steps 3 and 4 to add more graphics.

7. Drag and drop the timed video and graphics onto your story.

   • : Depicts an item that can be added (by drag and drop) to a newsroom story.

   • OK: Saves a reopened story item back to the story.

   • Cancel: Cancels any changes.

Timeline Update Service

When a video timeline (standalone video or video composite element) is opened in the Timeline Editor, it will check if a Timeline Update Service (TUS) is defined in the system. If defined, it will POST the playable relative timeline to the Timeline Update Service (TUS).

TUS is called both when opening a video from the results of a media search, and also when opening a video or composite element from a rundown in a newsroom system. In this case, although the TUS might already have run on the video when it was previously created by Viz Pilot, it is still run again.

The TUS is provided by the customer themselves, and is an HTTP service that complies with an API. Viz Pilot will invoke the relevant URL and will expect the result to follow the given protocol.

The API prescribes an HTTP service, listening on the configured URL for POST requests with the media type Atom Feed (application/atom+xml;type=feed), with content as defined by the Playable Relative Timeline format, and responding with content of the same format.

• Set up TUS:

  • The TUS is provided by the customer.

  • Specifications for the playable relative timeline format can be accessed from the Documentation page of the Pilot Data Server itself.

• Configure TUS in the Pilot Data Server:

  • Browse to http://<Pilot Data Server host:port>/settings#Params

  • Set timeline_update_service to the URL that Viz Pilot is expected to (HTTP) POST Playable Relative Timeline documents to. The response is expected to be a document in the same format with any updates.

• Use TUS once configured:

  • Open Viz Pilot News and search for videos. When you preview a video in the Timeline Editor, the courtesy graphic is displayed.

• Example:

  • One of the use cases for TUS is adding courtesy graphics. In this case the TUS could return an updated playable relative timeline, with a courtesy graphic added, or return the same timeline it was given if no changes were made. If no value is set in timeline_update_service, then no courtesy graphic is added (this is the default behavior).

Viewing an Asset Stored in Viz One

As soon as a new asset is published by Viz One and appears in a search result, it can be opened in the Timeline Editor.

For Viz One assets that have been fully ingested and processed by Viz One, the Timeline Editor will provide a full preview. However, if Viz One is still processing the asset (ingesting the high-res video or creating the proxy video), the Timeline Editor will provide a preview based on the information available to it at the time.

While Viz One is processing the asset:

• The timeline duration reported by the Timeline Editor will equal the high-res video duration reported by the asset, at the time of opening it in the Timeline Editor.

• If no proxy video is available from the asset, the Timeline Editor will open with a blank video preview area, with all video preview related controls (play, pause, volume) disabled.

• If there is a proxy video, but its duration (as reported by the asset) is shorter than the high-res video, then video preview will only be available for the first part of the timeline. Seeking beyond that is possible, but the video preview will not be updated there.

• It is possible to add graphics and in/out points even where there is no video preview. These areas are marked on the buffer indicator line with moving black and white stripes.

• The Timeline Editor sets the out point to the length/duration of the currently available portion of the video. If the high-res is still growing when the timeline is opened in the Timeline Editor, then this out point will be somewhere in the middle of the final video.

  Note: When played out, only the part before the out point will be played.

• To see an updated timeline for the asset, reopen the Timeline Editor.

  Note: Depending on version and configuration, different Viz One installations may behave differently with regards to the details on which the Timeline Editor is reliant. For more information on Viz One, contact Vizrt Customer Support at www.vizrt.com.

Known Limitations

• Graphics may be overlaid on the timeline; however, graphics that use the same layer (front, middle, back or transition logic layer) will not play out correctly. The timeline editor always indicates a possible conflict by coloring the graphics placeholders red. To use overlapping graphics based on transition logic scenes, see Multiple Tracks in the Timeline Editor.

• Current limitations on the Media Sequencer will cause the following behavior:

  • If you issue a Take on a timed group (1), and while that group is played out issue a Take on graphics in another layer (2), the Media Sequencer will take out the last taken element instead (2) when issuing the timed Take Out command (for the timed graphics). It is therefore not recommended to take other data elements on-air while a timed group is being played out.

• Invalid Timeline! The element is not fully inside the area marked by the In and Out points.
  Timelines which have elements which are outside or intersecting the Mark In/Mark Out points cannot be saved or dragged to the rundown.
  In the image below, the first timeline shows a normal element, while the second timeline contains an element which intersects the In/Out points - the second timeline cannot be saved or dragged.

• If loading timeline elements (overlay graphics), or calling update service (Timeline Update Service) takes more than two seconds, an abort button is shown on the loading screen. Clicking the abort button causes the video to be loaded with a missing or incomplete timeline with overlay graphics, depending on which of the two operations was aborted.