Convert WGI to AVI

Everything points to the fact that .wgi files (Wildgame Innovations flexi videos) are playable using VLC player. This means that it's just some of the common video formats and thus it should be possible to convert it to other multimedia files, including wgi to avi conversion. Try to manually open it using some dedicated video converter (for example Freemake) and convert it to some video format, for example AVI.