Lecture Recording and Live Streaming
In the Lecture Hall 4.0 project, IT Center and CLS are developing an application that allows lecturers to schedule automatic recording of courses via the course rooms in RWTHmoodle. Managers can activate a calendar in the course room that contains all course dates from RWTHonline. At the push of a button, the recording can be scheduled for each appointment. The finished recording is transferred from the lecture hall to the RWTH streaming server and, after processing, appears in the course room through which the recording was scheduled.
For technical reasons, a recording is always linked to a live stream, even if it is not used. However, the live stream can be used for hybrid events and made available to students via the course room. It is later replaced by the processed recording.
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After activating the recording calendar, you can schedule a recording for individual dates or all dates of the listed courses. This is always coupled with a live stream. Recordings without live streaming are currently not possible for technical reasons.
Basically, the recording of an event ends up in the course room in which it was scheduled. This makes it possible to combine recordings of different events in one and the same course room. Managers can therefore also schedule recordings for other courses, which are then stored in the current course room.
- Open the recording calendar in the navigation bar on the left.
- You will now see all persons who are assigned to the course as lecturers in RWTHonline. If these persons are assigned to other courses as lecturers, these courses will also be listed. However, a prerequisite is that a course room exists for these courses. Courses without a course room are not listed.
- For the desired person, select the event whose recording you would like to schedule by clicking on it with the mouse. You will now see all events for the course that are defined in RWTHonline. The dates are split into course events and group events. Group events refer to the events of the course groups from RWTHonline (only accessible in German, and only via the RWTH network).
Please note that the recordings always start 5 minutes before the announced start of the lecture and exceed the end of the event by a further 5 minutes. This means that minor deviations from the official timetable (e.g. an early start of the lecture) can be taken into account in the recording. A note to this appears above the recording calendar:
- The events are sorted by series of events and within the series by date. Next to the date, you will find the building number and room number of the lecture hall, the possible actions as well as status information. Currently, only events take place in lecture halls H01, H02, or H03 in the C.A.R.L. building (room 1385|003, 1385|002, or 1385|003). The possible values for the status therefore are:
- The event is expired
- Recording & Live Streaming were planned
- The room has no feature for recording
- Reserve a recording - To schedule a recording, click on the button "Reserve recording & live streaming" under Actions. The status of the entry will then change to "Recording / Live Streaming have been scheduled".
- Reserving a series of recordings - If you would like to reserve the complete series of recordings of a course with one mouse click instead of scheduling them one by one, click on the "Reserve all" button on the right below the last listed time slot.
All recordings of the series are now automatically processed and reserved one after the other. Depending on how many recordings the series contains, this reservation process may take several minutes. Be sure to leave the recording calendar open until all appointments have been reserved. Otherwise, leaving the page prematurely will cancel the process.
- Cancel reservations
After a successful reservation, both single reservations and the whole series of reservations can be cancelled. Cancellation of reservations is possible both before the start of the event and while a recording is still in progress. In this case, the recorded video is discarded and thus not saved.
- Cancel single recording - click the "Cancel" button on a reservation to cancel the selected recording reservation.
- Terminserie stornieren -
Cancel a series of reservations - Click on the "Cancel all" button on the right below the last listed time slot. By doing this, you can cancel the entire series of reservations with a single mouse click. Please note that only those reservations will be cancelled for which no recording is available yet. Recordings that have already been completed are therefore retained and are not removed by cancelling a series of reservations.
The series of reservations are now automatically processed and cancelled one after the other. Depending on how many reservations the series contains, the cancellation process may take several minutes. Be sure to leave the recording calendar open until all appointments have been cancelled. Otherwise, leaving the page prematurely will cancel the process.
- In parallel, an entry is created in the "Video streaming (Opencast)" block in the list of videos. The calendar icon behind the entry indicates that this is a scheduled recording. After clicking "Reserve with live streaming" in the recording calendar, it takes about 1 minute for the entry to appear in the Opencast block. This is about the time it takes Opencast to process the data.
If you change the date in RWTHonline for which a recording is scheduled, the change will be transferred to the recording calendar and to Opencast with some delay. Due to the necessary synchronization of the systems, this can take several hours. Short-term changes are therefore not possible in this way. However, the recording and streaming function can also be controlled on-site in the lecture halls. Please read the guides for the Lecture Hall 4.0 project.
If a recording has been scheduled, it will automatically start in the lecture hall exactly at the beginning of the event and will also automatically stop exactly at the end of the event. The same applies to a live stream. While the recording is running, the "Video Streaming (Opencast)" block in the course room displays a red dot for the recording in progress instead of the calendar icon for scheduling.
After the recording ends, the RWTH streaming server processes the video. The "Video streaming (Opencast)" block in the RWTHmoodle course room shows an orange clock as status during this time. As soon as the processing has been completed successfully, a green checkmark appears. Managers can then make the video available to students. The easiest option for this is to include it via the video activity. Failed uploads are indicated by a yellow triangle with a black exclamation mark . In this case, the video cannot be accessed in the course room.
If you want to use the live stream, it needs to be made available in the course room before the event begins. Again, you can use the video activity for this.
If you want to edit the video before making it available to students, download it from the “Video Streaming (Opencast)” block. To do this, use the download links available there at the desired quality level. Once you have finished editing the video, upload it again as a new video in the "Video Streaming (Opencast)" block and make it available to students.
To cancel a scheduled recording or to cancel and delete it during recording, click the button "Cancel" next to the corresponding event.
For more information: