Convert WRF to VLC

Converting WebEx Recordings directly to a VLC Playlist (.wrf to .vlc conversion) is, per se, not possible.

You will first have to convert your WRF file to a format supported by the VLC Media Player, for instance WMV. To do so, your only option is using the WebEx Recording Converter itself.

You can then simply add your .wmv file to a VLC playlist, which will generate a .vlc file.

Simply put, it is impossible to convert WRF to VLC directly.
Thus, there is no so-called wrf to vlc converter or a free online wrf to vlc converter to be found.