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On the Visualization page, click the Show bottom bar icon in the top-right corner to expand the Bottom bar, then switch to the RECORDING tab to record all subscribed Topics as MCAP files for offline playback and analysis. Data Recording

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Start and Stop Recording

Recording panel
AreaElementDescription
ControlsStart Recording / Stop RecordingRecording button. Shows Start Recording when idle (select to begin), Stop Recording while recording (select to stop). Dims briefly as the file writes
Episode PrefixFilename prefix, default session_
Save FolderSave directory. Browse to choose a custom folder, Reset to restore the default. Shows Default when unset. See File Storage
Frame RateRecording frame rate, fixed at Unlimited
ChannelsChannels to record, fixed at All
StatusDURATIONElapsed time, HH:MM:SS format (shown live while recording)
FILE SIZECurrent file size (B / KB / MB / GB)
FRAMESTotal frames recorded
DROP RATEData frame drop percentage
CHANNELSActive recording channels
EpisodesEpisodesLists saved MCAP files on the right of the panel, newest first, each with filename, creation time, and size. Click an entry to open the containing folder in your file manager
Episode Prefix and Save Folder can be changed before recording and lock while recording. When no device is connected, the recording button is disabled and the panel shows No device connected. Select Go to Connect to open the Device Management view.
Connect a device before recording. If a device disconnects during recording, the session stops automatically and the file is saved.
If the default save folder doesn’t exist, starting a recording fails with Recording error: Failed to start recording. Select Browse to choose a valid folder.

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Quality Monitor

The QUALITY MONITOR panel appears in the bottom-right corner of the Visualization View during recording, displaying three quality metrics: Quality Monitor Each metric shows a color-coded indicator: green for Good, yellow for Warning, red for Bad. When a metric exceeds its threshold, a warning notification appears.

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File Storage

Recorded files are saved by default to:
Filename format: {prefix}{YYYYMMDD}_{HHMMSS}_{milliseconds}.mcap For example, with the default prefix session_:
Before recording, adjust two save settings in the RECORDING panel (locked while recording):
  • Filename prefix: change Episode Prefix
  • Save folder: select Browse next to Save Folder to choose a custom directory, or Reset to restore the default. When unset, the field shows Default, and files go to the default path above

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Data Playback

Open a local MCAP recording and replay it in the visualization panels to analyze captured data frame by frame.

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Open a Recording

  1. In the Bottom bar, select the PLAYER tab
  2. Select Open File (folder icon)
  3. In the dialog, find the .mcap file to replay
  4. Select Open
Open a recording Replay one MCAP file at a time. Opening a file does not start playback automatically—select Play to begin.
During replay, the 3D panel is taken over by the replay and is temporarily unavailable for live data.
The Wuji Glove tactile matrix changed from 24×32 to 24×31. When you replay tactile MCAP recordings captured before the change, Studio rejects the tactile data and shows an alert instead of rendering at the wrong dimensions. To replay historical tactile recordings, use an earlier Studio version.

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Playback Controls

The control bar at the bottom provides replay controls: The current time and total length appear as “current / total”. Click the current time to enter a target moment and jump precisely.