The problem is actually not caused by us unfortunately.  Emby ships it's own embedded ffmpeg, but the freenas team is altering our package to use the system ffmpeg: The system ffmpeg is missing our modifications and that is the reason for this problem (among others). See here which never got a response from them: https://github.com/freenas/iocage-plugin-emby/commit/71deeb0cf2f4d5034f3320ff8b092cf1d78c6aea What I can do is submit a pull request to undo their change and see what ha