Ts h264 / mpeg4 streams not working

Hi I have a some streams that work on Kodi on Windows and Openelec but not on OSMC .
I get the log error could not open demuxer . The video is an ffmpeg stream . Can I install ffmpeg on OSMC ??? I have tried with apt-get install ffmpeg but it returns an error
" Calculating upgrade… Package ffmpeg is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package ‘ffmpeg’ has no installation candidate "

ffmpeg is built into Kodi - trying to install it separately will not help you.

Please enable debug mode on Kodi, attempt to play the files that will not play and then use the log uploader in My OSMC to upload full logs.

Hi thanks for the reply

http://paste.osmc.io/oyeqiqiyer

hope i have done correctly

sorry it is uploading an old log

http://paste.osmc.io/yuqafafuli

There is a new OSMC release with Kodi 15 and updated ffmpeg. Can you try after updating?