A lightning talk about two use cases in Opencast. Creating a new video from a "parent" one and splitting a video in multiple ones for conference recordings

1. User derived videos in
Opencast.
A first draft from UPV
Carlos Turró
@TurroCarlos
Universitat Politècnica de València

2. Objective
● We had some requirements regarding from teachers, and we solve it
somehow
● Present our draft solution and get feedback
● Revise our thoughts 

3. Soft trimming
● Videos get published as soon as posible
● Teachers can trim and cut afterwards at any time
● Trimming and cutting is not destructive
● Data is stored in the Opencast annotation service (old, deprecated)
Paella-editor (https://github.com/polimediaupv/paella-editor)

4. Requested Use cases
● Highlights: As a teacher I want to have a new video holding only selected
parts of the video (with the same ACL as the parent)
● Conference: As a teacher I want to have a set of new videos with selected
parts of the video (with the same ACL as the parent)

5. Workflow
● Once the teacher finish to edit the new video
○ Push the button “Send”
● Data for the derived videos is saved in the annotation service

6. Workflow (2)
● A new Media Package need to be created for the new video but the editor
can’t do that
○ The editor runs on the presentation node
○ Current logger user has no ROLES to enter the editor or create new MP
● A custom script check for new annotations for videos (cron script)
● This script creates a new MP and upload it to opencast for
processing/distribute
○ Ffmpeg cutting the video
○ Planning to move to smil file, as per UCT advice

7. Conclusions
● Our teachers can make Highlights and Conference video exports
● A good workflow
Teachers happy -> My Boss happy -> Me happy
● Not fully happy, because is sort of a ugly hack
○ Hoping to integrate the process into Opencast

8. Thanks!
Questions?
turro@cc.upv.es @TurroCarlos

9. Extra Slides
Just in case Internet is not working ;-)

10. Editor button

11. The editor!
1
2
3

12. Derived videos tool

13. Derived videos tool