Did someone email you an .arf file and you’re not sure how to open it? Actually, ARF (advanced recording file) is a file extension for a WebEx advanced recording file from a network-based recording. ARF is a proprietary format of WebEx which means ARF file is not acceptable to other media players, applications or devices. So the best solution is to convert ARF file to MP4 for freely playback. Luckily, Official offers an ARF file converter – WebEx Network Recording Player to stream, watch and convert ARF file. You can use it to convert ARF to MP4, convert ARF to WMV or SWF, but you’re not allowed to convert ARF to MP3, MOV, MKV, ert.
I didn’t find the right solution from the Internet.