Trim Segments

This documentation describes how to configure Opencast to trim the start and end of a video as a default. By default, when trimming a video there are no trim segments at the start and at the end of the video. Adding trim segments would help resolve the issue of out of sync audio and video.

The video from a network camera is encoded (e.g. H264) which means when data is captured it could be between key frames and therefore video and audio could be out of sync when it gets processed by ffmpeg.

Setting the Configuration

prop.admin.editor.segment.start_length

prop.admin.editor.segment.end_length=3000

prop.admin.editor.segment.minimum_length=1000

prop.admin.editor.previewmode.default=true