--- title: "Vicon Shogun Live fundamentals" canonical: "https://help.vicon.com/space/ShogunLive121/1253212580/Vicon%20Shogun%20Live%20fundamentals" format: markdown --- The following topics provide information about some of the fundamental features that underpin the way Shogun Live works. > Macro (toc) > Macro (scroll-pagebreak) > Macro (anchor) ## Device synchronization session When you connect Shogun Live to a live system of cameras and/or Vicon connectivity devices, a new device synchronization session is created. To identify the current device synchronization session, look in the time bar at the bottom of the Workspace for the value in brackets [ ]. > ![Device synchronization session in Vicon Shogun Live time bar.](media://2f0a70ca-560e-4ba0-9dd4-4f4f1912f6ac) When you first open Shogun Live, the device synchronization session starts at 1 and the Frame and Seconds that are displayed are relative to the start of that session. The device synchronization session enables the system to synchronize all devices. A new system session starts when: - The hardware is rebooted. - A device is added to the system. - The frame rate changes. > Macro (anchor) ## Live review When Shogun Live is connected to a live system, the pause buffer is a feature that enables data to be stored in memory for live review (see [Capture a take](https://vicon-help.atlassian.net/wiki/spaces/ShogunLive121/pages/1253212290)). The maximum amount of data that can be stored is controlled by the **Pause Buffer Size**, which you can configure in the **Output** section of the **Processing** panel. The Pause Buffer Size specifies the duration of the pause buffer, and thus the amount of data that is always accessible. The data types stored in the pause buffer are identical to the data types that are saved when capturing data. This includes data such as centroids in each camera view, object pose, and system performance metrics such as latency. For more information on the data types that are stored in a capture, see [Capture a take](https://vicon-help.atlassian.net/wiki/spaces/ShogunLive121/pages/1253212290). The pause buffer influences the behavior and workflow of multiple aspects of the software including: - Object creation and manipulation - Reviewing recent live data - Graph Plots > Macro (anchor) ## Auto save With Shogun Live started, its default behavior is to save all settings automatically according to the **Auto-save interval **setting. All auto-saved files except preferences and subject view preset files are located in this folder: *C:\Users\Public\Documents\Vicon\ShogunLive1.#\LastRun\*username Preferences and subject view preset files are located in the following folder so that you can use them in later (or earlier) versions of Shogun Live: *C:\Users\Public\Documents\Vicon\ShogunLive1.x\*username > ℹ️ **Note** > ℹ️ Auto-save files are only updated if there have been changes since the last auto-save. As you work in Shogun Live, files populate into the above folder according to the temporary filenames listed in the following table. When you close Shogun Live properly, the temporary filenames are converted and saved as normal filenames. | Temporary filename | Normal filename | | --- | --- | | AutoSave.System | LastRun.System | | AutoSaveSubjects.mcp | Subjects.mcp | | AutoSave.View | LastRun.View | | AutoSave.HotKeys | LastRun.HotKeys | | AutoSaveSubjectViewPresets.json | SubjectViewPresets.json | | StorePreferencesAutosave.Prefs | StorePreferences.Prefs | If Shogun Live terminates abnormally (including closing the process in Task Manager), the temporary filename does not convert to its normal filename and is left present in the *LastRun* folder. > Macro (scroll-pagebreak) When you re-launch Shogun Live, if any of the auto-save files are detected, you are prompted to confirm which files you want to load: > ![Confirm save of auto-save files in Shogun Live](media://4bcb911f-4289-4b8e-b97b-fe0d100bb8b8) - To load the most recent (auto-saved) settings, click **Yes**. or - To load settings from the last successfully closed session, click **No**. This feature prevents you from losing your settings if Shogun Live closes abnormally, for example, due to process termination, machine reboot, etc. **To control the auto-save settings:** - From the **Settings **menu, select **Preferences** (or press Shift+P) and in **User Preferences**, go to the **General** section. - To disable auto-save, clear **Enable auto-save**. The default is selected. - To change the auto-save interval, enter a value (in seconds) for the **Auto-save interval**. The default is 60 seconds. > ✅ **Save and re-use system settings** > ✅ If you have system settings that you are likely to re-use, we recommend saving them by clicking System Settings at the top right of the Shogun Live toolbar, selecting **Manage** and then clicking the Save button, rather than relying on the auto-save feature. See also the Vicon video: [How do I manage and swap between system settings in Vicon Shogun Live and Markerless?](https://youtu.be/NV0ivj5dm_0?si=mF4JBQd9t7yGehmH) > Macro (scroll-ignore) > > > Macro (widget)