WebView Video Preview Handler

Enables previewing most common video and audio formats in explorer's preview pane by using WebView2.

Install

1. Download the latest release zip
2. Extract to a permanent location (e.g. %AppData%\VideoPreviewHandler)
3. Run register.bat as administrator
4. Make sure Preview pane is enabled in explorer: Top bar -> View -> Preview pane

To uninstall, run unregister.bat as administrator and delete the folder.

Configuration

Configuration happens via WebViewVideoPreview.ini. Available settings:

• Extensions: comma-separated list of file extensions to associate with the handler (leading dots required). Defaults: .3gp .m4v .mkv .mov .mp4 .ogv .webm .aac .flac .m4a .mp3 .ogg .opus .wav .weba. Changes take effect after re-running register.bat.
• Volume: initial player volume, integer from 0 to 100. Default 50. Applied each time a preview cold-starts; subsequent in-folder swaps preserve any manual adjustment.
• Autoplay: true or false. Default true.

Changing volume or autoplay setting requires restarting explorer.exe to take effect.

Requirements

• Windows 10 or later (Only tested on Win10)
• WebView2 Runtime (included with modern Windows)

Building from Source

Requires Visual Studio Build Tools with the C++ workload.

1. Install the WebView2 SDK:

   nuget install Microsoft.Web.WebView2 -OutputDirectory packages
   

2. Run build_release.bat from a VS Developer Command Prompt

License

MIT