# Playback in Nx Witness

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Nx Witness provides powerful and easy playback controls that let you quickly find, or Bookmark, a video segment, perform forensic analysis, capture screenshots, export video, and other related actions. This section provides a detailed description of the following operations:

•Navigating through Archive and Live Display

•Searching through Archive

•Using Bookmarks

•Playing Local Video Files in Nx Witness

•Using 2-Way Audio

•Exporting

•Taking Screenshots

•Adjusting Volume

•Tours – cycles through all items in a given layout

•Showreel (Tour Cycle) – cycles through all layouts open in the current session

•Viewing Archive from Deleted Cameras

Nx Witness provides viewing and playback of the following content:

•Cameras – l ive and archived footage

•I/O Modules – sound can be recorded from an I/O module with a microphone connected, and played live or from archive

•Local files – saved video and image files (see "Playing Local Video Files in Nx Witness")

(Some operations described in this section may require certain advanced permissions. See "Introducing User Roles" for details.)

Controlling Live Playback Quality

If you are experiencing image stuttering during live playback, or there is too much time between actual action and displayed action in Live view, it may be necessary to adjust the buffer size (see "Configuring Live Buffer Size") or streaming resolution (see "CPU and Bandwidth Saving during Playback").