In Evidence.com, redaction is a term used to describe the blurring of objects and removal of audio from video evidence. The following terms describe the components in Redaction Studio used to create a redaction:
- Video Mask — A rectangular area on the video that defines the objects that are redacted in a continuous segment of video frames. Video masks have their height and width defined by a Mask Frame and their duration defined by a Mask Segment. There are two types of video masks, a Manual Mask and an Object Tracker mask.
- Audio Mask — A continuous segment on the Audio Track that defines the audio that is redacted. Audio masks have only duration, which is defined by a Mask Segment.
- Mask Segment — Defines the continuous series of frames that the audio or video mask redacts. A mask segment has a start and an end.
- Segment Timeline — The area below the audio track that shows all the video mask segments for the current redaction. This area allows users to easily find and select video masks.
- Video Mask Frame — Defines the rectangular area redacted by a mask in a video. Video mask frames can be manually moved and resized. After placement, Object Tracker video masks will automatically attempt to track the object they are placed over.
- Video Mask Frame Handle — Enables you to change the size and shape of the video mask frame.
- Spray Paint Redaction — A type of manual redaction where the user can click and hold on a manual mask during video playback at normal or half speed, and then use the mouse to follow the object the user wants to redact.
- Blur selector — Enables you to specify how blurred the area inside a video mask frame appears in the extracted video file. The selector supports four level of blur:
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Light blur |  |
Heavy blur |
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Medium blur |  |
Blackout |