Abstract: Methods, systems, and computer program products for providing a shared digital video stream. A first and a second digital video stream are collected. The shared stream is produced based on the first stream so that the first source is visible in the shared stream, but so that the second source is not visible in the shared stream. The first and/or second stream are analysed to detect a trigger, based on detection of a predetermined image and/or audio pattern, the trigger being a detected gazing or a gesture. The shared stream based on the second stream and/or based on the first source but with at least one of a different cropping, a different zooming, a different panning, or a different focus plane selection. The output stream is provided to a consumer.

Abstract: Methods and systems, including computer software products, for providing a shared digital video stream. Primary digital video streams are collected from at least two digital video sources. The primary digital video streams are time-synchronised with respect to a common time reference. The time-synchronised streams are analysed to detect at least one pattern selected from a first set of patterns. The shared digital video stream is produced as an output digital video stream based on consecutively considered frames of the time-synchronised streams and the detected patterns. The output digital video stream is continuously provided. The synchronisation introduces latency, which gets included in the output digital video stream. The pattern detection includes considering information of the primary streams that is present in a later frame than a frame of a time-synchronised primary stream yet to be used in the production of the output stream.

Abstract: Method, systems and computer program product for providing a shared digital video stream. A first and a second digital video stream are collected. The shared stream is produced based on said first stream, so that the first source is visible in the shared stream, but so that the second source is not visible in the shared stream. A latency with respect to the first and the second digital video stream is deliberately introduced. The first and/or second stream are analyzed in to detect a trigger, based on detection of a predetermined image and/or audio pattern. The shared stream is produced based on the second stream and/or based on the first source, but with at least one of: a different cropping, a different zooming, a different panning or a different focus plane selection. The output stream is provided to a consumer.

Abstract: Method and systems for managing sharing of a video in a collaboration session. A central server obtains a synchronization time stamp of an audio frame, relating to the session, to be used for synchronizing the shared video stream with the session. The central server determines, based on a video frame rate difference for the video file, whether more, less or same number of video frames are needed, and sets up a buffer for provisioning the shared video stream to the session. The central server iteratively retrieves video frame by video frame of the video file and generates zero, one, or more video frames according to the determination, with a desired resolution, while setting a time stamp of each generated video frame corresponding to the desired frame rate. The shared video stream is provided by inserting the generated video frames into the buffer.