Refactoring: Uploading a video via DnD into a course should not require the teacher to open the automatically created activity:

[abias]

The teacher is able to upload a video into Opencast by dragging the video into the course:

At first sight, this looks really great and handy.
BUT at second sight, the teacher has to realize that this video is not yet processed and is not yet playable. When he opens the activity, he will see this:

We must make sure that this last manual step by the teacher is avoided as best as possible.
Either by asking the teacher all necessary data before the upload (whereas the Moodle DnD API will have its limitations in this case).
Or by simply processing the video with all default values, allowing the teacher to re-fine these values if necessary afterwards.