# Playing Local Video Files in Nx Witness

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Nx Witness can play back almost any video file, with most major codecs and containers supported.

•Local File Structure in Resource Tree

•Configuring Media Folders

•Opening Local Files Outside of Media Folders

•Timeline Navigation for Local Files.

All Local file operations described in this section are available when you are connected to a System. If you are not connected to a System, you can still browse and view local files, as follows:

To play local files from the Nx Witness Welcome Screen

1.Go to Main Menu and select Browse Local Files.

2.The Nx Witness interface opens to a blank new layout, with all local files found in the default media folder displayed in the Resource Tree.

3.You can now add files, arrange items, add new layouts, and use the Timeline. Note however that these layouts cannot be saved.

4.To toggle back to the System connection page, go to Main Menu and select Show Welcome Screen.

5.1 sound stream playback

Video files that have a 5.1 sound stream require a special setting in order to play back on stereo speakers

1.Go to Main Menu -> Local Settings -> Advanced tab and check Downmix Audio from 5.1 to 2.1.

2.Click Apply to save changes, OK to save changes and close the dialog, or Cancel to discard changes

3.You will need to restart the Nx Witness c lient for this change to take effect