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README.md

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 # OutputVideo-Addon-for-PPTX
-A PowerPoint (2016+) add-on to help export 60fps+ video.
+**A PowerPoint (2016+) add-on to help export 60fps+ video.**
+
+This is the GUI version of the official subroutine `ActivePresentation.CreateVideo`. 
+
+Due to PowerPoint's export video function in the menu can only export 30fps video at most, but it has built-in related subroutines to export higher frame rate video. Therefore, a graphical interface is made to call this subroutine and configure other related options.
+
+## How to use
+1. Download the lastest version of this add-on.
+2. Open your Microsoft PowerPoint 2016+.
+3. Click "Option" in the PowerPoint start screen.
+4. Click "Add-ons" in the left side of the option form.
+5. At the bottom, select the "PowerPoint" option in the "Manage" combo box, and click the "Go" button.
+6. Click the "Add" button.
+7. Find the add-on file you just downloaded in the opened dialog, and open it.
+8. Click "Close" button.
+9. In the "Recording" tab of the Ribbon menu, you will see a new option called "Custom export video" on it.
+10. Select the path for video export.
+11. Set related configuration options.
+12. Click "Output" button, then just wait for PowerPoint export video.