Video Editor: Setup
Installation
Since Matterhorn 2.0 the videoeditor modules use ffmpeg for the prcessing. An ffmpeg version > 2.4 is hardly recommended-
Configuration
UI Config File Parameters
Currently there are two config file parameters for UI options.
The config file can be found at etc/load/org.opencastproject.organization-mh_default_org.cfg
- prop.adminui.prePostRoll
- Change the duration of the pre and post roll (in seconds)
- prop.adminui.minSegmentLength
- Change the minimum required segment length (in seconds)
Silence Detection Config Parameters
The settings regarding the sensitivity of the silence detection can be changed in etc/services/org.opencastproject.silencedetection.impl.SilenceDetectionServiceImpl.properties.
- silence.pre.length
- Duration of silence that should be included at the beginning of a new voice segment. This is to avoid that a cut seems to sudden.
- Default: 2000 (2s)
- silence.threshold.db
- Silence threshold in decibel (e.g. -50 for loud classrooms, -35 for silent indoor location).
- Default: -40
- silence.min.length
- Minimum duration in milliseconds to detect a sequence as silence.
- Default: 10000 (10s)
- voice.min.length
- Minimum segment duration in milliseconds to start a new voice containing sequence after a silent sequence.
- Default: 60000 (1min)
Video Editor Config Parameters
The ffmpeg properties for the Video Editor can be modified in etc/services/org.opencastproject.videoeditor.impl.VideoEditorServiceImpl.properties. Usually there should be no reason to touch this file.