A method for mixing of live video signals of image frame sequences depicting a scene or an event and handling of dynamic delay during said mixing, using a mobile video mixing system, the method comprising: - receiving an image frame sequence from a first video source; - receiving an image frame sequence from a second video source; - mixing the received video frame sequences; characterized in that the mixing further comprises: - at each time instance: i. receiving or retrieving a parameter representing the context of the use of the mobile video mixing system; ii. determining whether the mobile mixing is performed in view of or out of view of the depicted scene or event, on the basis of the context parameter, iii. selecting, dependent on said determination, a video mixing mode, from a selection of at least two different video mixing modes, wherein each different video mixing mode involves using a different synchronization technique, selecting a first video mixing mode involving frame rate control if it is determined that the mobile video mixing is performed in view of the depicted scene or event; or selecting a second video mixing mode involving buffering of video frames if it is determined that the mobile video mixing is performed out of view of the depicted scene or event, and; iv. mixing the received video frame sequences according to the selected video mixing mode. - receiving an image frame sequence from a first video source; - receiving an image frame sequence from a second video source; - mixing the received video frame sequences; - at each time instance: i. receiving or retrieving a parameter representing the context of the use of the mobile video mixing system; ii. determining whether the mobile mixing is performed in view of or out of view of the depicted scene or event, on the basis of the context parameter, iii. selecting, dependent on said determination, a video mixing mode, from a selection of at least two different video mixing modes, wherein each different video mixing mode involves using a different synchronization technique, selecting a first video mixing mode involving frame rate control if it is determined that the mobile video mixing is performed in view of the depicted scene or event; or selecting a second video mixing mode involving buffering of video frames if it is determined that the mobile video mixing is performed out of view of the depicted scene or event, and; iv. mixing the received video frame sequences according to the selected video mixing mode. i. receiving or retrieving a parameter representing the context of the use of the mobile video mixing system; ii. determining whether the mobile mixing is performed in view of or out of view of the depicted scene or event, on the basis of the context parameter, iii. selecting, dependent on said determination, a video mixing mode, from a selection of at least two different video mixing modes, wherein each different video mixing mode involves using a different synchronization technique, selecting a first video mixing mode involving frame rate control if it is determined that the mobile video mixing is performed in view of the depicted scene or event; or selecting a second video mixing mode involving buffering of video frames if it is determined that the mobile video mixing is performed out of view of the depicted scene or event, and; iv. mixing the received video frame sequences according to the selected video mixing mode.