How can one import a WebEx recording (.arf file) into Camtasia 2 for Mac as a media file? I've read https://support.techsmith.com/hc/en-us/articles/203727178-Camtasia-Mac-Formats-able-to-be-imported-to-the-timeline, which lists the supported import formats, of which .arf is clearly not one. Further, that article suggests (for unsupported formats) to just playback the recording and capture it in Camtasia in streaming realtime.
However, there must be a quick way to convert from .arf to another format that is supported for import into Camtasia (sometimes the videos I need to convert are hours long).