---
title: "De-interlace AVI files"
canonical: "https://help.vicon.com/space/Nexus212/11242121/De-interlace%20AVI%20files"
format: markdown
---
Nexus can permanently de-interlace all interlaced .avi files associated with the currently loaded trial. The de-interlaced .avi  file is placed in the same directory as the source .avi  file. It retains the original file name, but is appended as follows: [filename].*interlaced.avi*.

If an .avi file within the currently open trial has been de-interlaced, Nexus automatically loads the new (de-interlaced) version of the file.

> ⚠️ **Important**   
> ⚠️ Audio tracks are not transferred to the de-interlaced file.

**To de-interlace an .avi  file:**

1. To load a digital video file, with the **Camera** view selected, click on the desired movie file on the **Data Management** tab.
2. In the **Available Operations** section of **Pipeline Tools** pane, expand the **System** pipeline operations list.
3. Double-click the **Apply Codec to Video** pipeline operation.   
The operation is added to the current pipeline and is displayed at the bottom of the list in the **Current Pipeline** section.
4. In the **Current Pipeline** section, click on the pipeline operation, and then in the **Properties** section at the bottom of the **Pipeline Tools** pane:
  1. From the drop-down **Video Codec** list, select the codec you want to use for file compression.
    :warning: **Important: **Due to continual updates to available capture hardware, PC processing power, and codecs, check the third-party downloads on the [Vicon website](https://www.vicon.com/downloads/third-party) for the latest recommended codec (currently FFDShow).
  2. If you want Nexus to create a backup of the video file, ensure the **Keep Backup** option is selected.
    :warning:** Important: **Reverting to the backup file to re-do de-interlacing is not supported in Nexus. Therefore, Vicon recommends that **Keep Backup** is selected whenever you permanently de-interlace an *.avi* file.  
To perform de-interlacing again on a video file, re-import the file and rerun the pipeline operation.
  3. From the **Remove Interlacing** list, select the required option.
5. Add any other pipeline operations you want to include in the pipeline.
  :check_mark:** Tip: **The pipeline operations are run in the order they appear in the **Current Pipeline** list; drag to rearrange the order.
6. In the **Current Pipeline** configuration management section, click Save to save your settings. (An asterisk (*) is displayed next to the pipeline name if there are unsaved changes.)
7. Run the pipeline.