video: Implement `Default` for `VideoOverlayComposition` in 1.20 and add `VideoOverlayComposition::add_rectangle()` to add new rectangles after construction (!961) · Merge requests · GStreamer / gstreamer-rs · GitLab

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Sebastian Dröge requested to merge slomo/gstreamer-rs:overlay-composition-default-add-rect into main Jan 26, 2022