Avid Technology Limited

Stephen McNeill

Shailendra Mathur

Katherine H Cornog

Michel Eid

Sylvain Girard

Methods and systems for constructing media output by combining multiple input media channels corresponding to different views of a scene. The construction involves combining channels that have different spatial ranges and/or color ranges so as to produce a constructed output having a range that is a composite of input channel spatial and/or color ranges. The constructed output is generated dynamically from available input channels in response to output requirements specifying a view defined in part by spatial and/or color parameter ranges. Available input channels are represented by a single multi-channel source object comprising a hierarchy of grouped and aligned channels, with individual media essence files at the lowest level. Input channel ranges and relationships among the ranges are specified by metadata associated with each channel. During editing, input channels may be added, removed, or changed and the range and nature of the constructed media output are updated dynamically.

Multi-channel video editing

A set of tools in a media composition system for stereoscopic video provides visualizations of the perceived depth field in video clips, including depth maps, depth histograms, time-based depth histogram ribbons and curves displayed in association with a media timeline, and multi-panel displays including views of clips temporally adjacent to a clip being edited. Temporal changes in perceived depth that may cause viewer discomfort are automatically detected, and when they exceed a predetermined threshold, the editor is alerted. Depth grading tools facilitate matching depths in an outgoing clip to those in an incoming clip. Depth grading can be performed automatically upon detection of excessively large or rapid perceived depth changes.

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St. Lazare, Canada

Stephen McNeill