I am on Ubuntu 16.04 64-bit. It is very frustrating from Cisco side that they still do not provide anything for 64-bit linux. As webex is not working, I am missing online sessions. To further surprise, nbr2mp4 is not able to convert arf to mp4. It is stuck for hours with no sign of progress.
Is there any other alternative way (online or offline) to convert arf to mp4. Even if nbr2mp4 has some issue, let me know how to solve.