This feature has been deprioritized in our roadmap.
Unfortunately, we need to postpone this feature further to speed up the development of our Office365 integration. However, we understand that a lot of users demand this and the topic has a high priority. We have therefore kept the item on our immediate roadmap.
This feature is still planned, but currently not in development. We will update this request as soon as development starts
We are planning to support mov videos as well to make it easier to upload videos from mobile devices. We are checking the technical impact to display a preview in the timeline right away. This could affect the overall performance of the platform since it takes a lot of bandwidth to stream videos.AHOL commented
Especially with regard to the DSGVO, it would be helpful to have the files on your own server.