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The Replay timeline shows everything an environment recorded over a time window, laid out left-to-right. Dots mark captured frames; filled bars show where each track has data.

Open replay over a recording

  1. Switch the environment to Replay.
  2. Click the calendar button.
  3. Pick the date (the day you recorded, or May 8, 2026 if you’re using the suggested demo environment).
  4. Load sessions, no filters needed and the timeline fills in.

Color legend

Open the Legend popover in the toolbar at any time. Colors map to the kind of data, not severity:
ColorTrack
🔵 BlueRobot / point cloud (joint states, depth/LiDAR frames)
🟣 PurpleCamera / video
🟢 Green (dots/bar)Audio
🟢 Green (span)An episode — a labeled segment you created

What you can do here

  • Scrub & play back at 1× or 2×; click any frame to jump to it.
  • Zoom into a stretch of the timeline for frame-level detail.
  • Filter markers by twin with the Markers dropdown.
  • Browse sessions by date with the calendar picker.
  • Create an episode — select a window and label it as a training/dataset segment.

Why it matters

  • Research: turn real runs into labeled episodes and datasets for training VLAs.
  • Security & review: re-watch exactly what a robot did, find the moment something went wrong, and inspect it frame-by-frame.
See Recording replay (signed URLs) for how playback data loads, and Replay & Historical Data for the full pipeline.