One of your Apt sources is wrong
it refers to winff (which is a GUI front end to ffmpeg)
most probably you are trying to install an incompatible Debian package on your Ubuntu system

can you post the output of
Code:
cat /etc/apt.sources.list
&
Code:
cat /etc/apt/sources.list.d/winff.list
WinFF is in the standard Ubuntu repos
there shouldn't be any reason to use a different source