System and method for producing a video stream

A computer software product for providing a shared digital video stream, the computer software function being arranged to, when executing, perform:

• a collecting step, wherein a first digital video stream is collected from a first digital video source and a second digital stream is collected from a second digital video source;
• a first production step, wherein the shared digital video stream is produced as an output digital video stream based on consecutively considered frames of the first digital video stream so that image information from the first digital video source is visible in the shared digital video stream, but so that image information from the second digital video source is not visible in the shared digital video stream;
• a trigger detection step, wherein a trigger is automatically detected by at least one of
• a) digitally analysing the first digital video stream to automatically detect the trigger in the form of a participant depicted in the first digital video stream gazing towards, or making a predetermined gesture in relation to, an object depicted in the second digital video stream, the detection being based on information about a relative orientation of the first camera, the participant and the object, the detection further being based on a digital image-based determination of at least one of a body direction, a head direction, a gaze direction and a gesture direction of the participant in question;
• and
• b) digitally analysing the first and/or second digital video stream to automatically detect the trigger in the form of a transition of a gaze direction of the participant depicted in the second digital video stream from not gazing into the second camera to gazing into the second camera,
• the trigger being instructive, according to a predetermined production rule, to alter the production mode of the shared digital video stream;
• a second production step, initiated in response to the detection of the trigger, wherein the shared digital video stream is produced as an output digital video stream based on consecutively considered frames of the second digital video stream so that image information from the second digital video source is visible in the shared digital video stream, and/or the shared digital video stream is produced as an output digital video stream based on consecutively considered frames of the first digital video source but with at least one of a different cropping, a different zooming, a different panning or a different focus plane selection of the first digital video stream as compared to the first production step;
• and
• a publishing step, wherein the output digital video stream is continuously provided to a consumer of the shared digital video stream.

A system for providing a shared digital video stream, the system comprising a central server in turn comprising:

• a collecting function, arranged to collect from a first digital video source a first digital video stream and from a second digital video source a second digital stream;
• a first production function, arranged to produce the shared digital video stream as an output digital video stream based on consecutively considered frames of the first digital video stream so that image information from the first digital video source is visible in the shared digital video stream, but so that image information from the second digital video source is not visible in the shared digital video stream;
• a trigger detection function, arranged to automatically detect a trigger by performing at least one of
• a) digitally analysing the first digital video stream to automatically detect the trigger in the form of a participant depicted in the first digital video stream gazing towards, or making a predetermined gesture in relation to, an object depicted in the second digital video stream, the detection being based on information about a relative orientation of the first camera, the participant and the object, the detection further being based on a digital image-based determination of at least one of a body direction, a head direction, a gaze direction and a gesture direction of the participant in question;
• and
• b) digitally analysing the first and/or second digital video stream to automatically detect the trigger in the form of a transition of a gaze direction of the participant depicted in the second digital video stream from not gazing into the second camera to gazing into the second camera,
• the trigger being instructive, according to a predetermined production rule, to alter the production mode of the shared digital video stream;
• a second production function, arranged to be initiated in response to the detection of the trigger, and to produce the shared digital video stream as an output digital video stream based on consecutively considered frames of the second digital video stream so that image information from the second digital video source is visible in the shared digital video stream, and/or to produce the shared digital video stream as an output digital video stream based on consecutively considered frames of the first digital video source but with at least one of a different cropping, a different zooming, a different panning or a different focus plane selection of the first digital video stream as compared to the first production function;
• and
• a publishing function, arranged to continuously provide the output digital video stream to a consumer of the shared digital video stream.