The solution is to remove libavcodec-ffmpeg-extra56 package, which will replace it with libavcodec-ffmpeg which stops the ffmpeg warning output.
sudo apt remove libavcodec-ffmpeg-extra56 AskUbuntu References: - How to fix "library configuration mismatch": http://askubuntu.com/a/714991/8570 - What is libavcodec-ffmpeg-extra56 package: http://askubuntu.com/a/847566/8570 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/730159 Title: ffmpeg library configuration mismatch To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ffmpeg-extra/+bug/730159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs