On 5/11/2018 12:11 PM, Alexis Boniface wrote:
> This is the output that I have: https://pastebin.com/iJMiMNqB
     "ffmpeg version 2.8.14 ..."
This is very old. Current release is 4.0. Upgrade to that or to a static 
build of the latest git snapshot and check. Links at 
https://ffmpeg.org/download.html
Regards,
Gyan