Why mp4 or mp4.ts from identical installation?

[RS]

>From: Charles Bradshaw Sent: Tuesday, February 7, 2017 12:09 PM
To: get_iplayer at lists.infradead.org

>Please, I am serious about solving this problem.

Have you tried installing v3.0 or v3.2.2 of ffmpeg as I suggested? 
artisticforge has told you the CentOS installation does not have ffmpeg 
installed.  ffmpeg cannot multiplex your file if it is not installed.  In 
addition, some features of get_iplayer require v2.5 or above of ffmpeg and 
some require v3.0 or above.  You can look at the documentation to see which 
features those are.