TRECVID Shot Boundary Detection

# TRECVID Shot Boundary Detection Configuration
# Task: Detect and classify shot transitions in broadcast video

annotation_task_name: "Shot Boundary Detection"
task_dir: "."

data_files:
  - data.json
item_properties:
  id_key: "id"
  text_key: "video_url"

output_annotation_dir: "annotation_output/"
output_annotation_format: "json"

annotation_schemes:
  - name: "shot_boundaries"
    description: |
      Mark every shot boundary and classify the transition type.
      A shot is a continuous sequence from a single camera.
    annotation_type: "video_annotation"
    mode: "keyframe"
    labels:
      - name: "cut"
        color: "#EF4444"
        key_value: "c"
      - name: "dissolve"
        color: "#8B5CF6"
        key_value: "d"
      - name: "fade_in"
        color: "#22C55E"
        key_value: "i"
      - name: "fade_out"
        color: "#F97316"
        key_value: "o"
      - name: "wipe"
        color: "#3B82F6"
        key_value: "w"
      - name: "other_gradual"
        color: "#EC4899"
        key_value: "g"
    frame_stepping: true
    show_timecode: true
    video_fps: 30

allow_all_users: true
instances_per_annotator: 40
annotation_per_instance: 2

annotation_instructions: |
  ## Shot Boundary Detection Task

  Mark every transition between camera shots.

  ### Transition Types:
  - **Cut (c)**: Instantaneous change (most common)
  - **Dissolve (d)**: Two shots overlap/blend
  - **Fade In (i)**: From black to image
  - **Fade Out (o)**: From image to black
  - **Wipe (w)**: One shot pushes another off screen
  - **Other Gradual (g)**: Any other gradual transition

  ### Guidelines:
  - Mark at the FIRST frame of the new shot (for cuts)
  - For gradual transitions, mark the midpoint
  - Use frame stepping for accuracy