The Admin UI currently offers two tools: The Video Editor and the Playback.
The Playback tool is actually quite useless as it offers a subset of the functionality of the Video Editor.
It does, however, confuse users as they open a tool that offers no use.
The goal of this task is to remove the Playback Tool completely.
There has been a proposal on list a while ago: https://groups.google.com/a/opencast.org/forum/#!topicsearchin/dev/remove$20playback/dev/U-Io91-xA_U
The proposal passed.