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Video Annotation

Video jobs are treated simiarly to image jobs in that you can annotate frames of a video much like you would annotate separate images.

However, we also provide a few features to speed up that process, including a video frame carousel with the option to persist annotations across multiple frames:


Using the carousel, you can see:

  • Video Previews: Use the play and fast forward buttons to play the video directly in the canvas. A blue progress bar will track the current frame as the video plays.


  • Annotation Timelines and Persistance: see which annotations are present in each frame and across frames. Each bar above the frame carousel represents an annotation “sequence” - indicating an object being tracked across multiple frames. The position and length of the colorful bar indicate the frames in which that annotation is present.


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Creating a Sequence

  • First create a single annotation
  • Hover over the colored part of the bar. The bar will expand slightly and a dragging symbol should appear on the left or right sides of the bar. Drag the bar to the left or right to apply that annotation across multiple frames.
  • While the annotations are being applied, the bar will pulse, indicating a loading state. Once all annotations have been created, the stretched bar will become solid.
  • Once you have persisted an annotation across multiple frames, you can go into each frame and adjust the position of the annotation to follow the position of the object.

Next, check out how to create and resolve issues on the Canvas!