A calibration system for media content comprises a memory, a media device, a plurality of different types of sensors, and a control circuitry. The memory is configured to store a media item and expected-emotions-tagging metadata for the media item. The control circuitry is configured to compute a reaction delay for a first emotional response of the audience captured by the plurality of different types of sensors for a first scene of the media item with respect to a position of the first marker. The first scene of the media item spans a first time slot that corresponds to the first scene in the media item. The control circuitry is configured to calibrate the position of the first marker to associate a first set of frames of the first scene with the first emotional response, based on at least the computed reaction delay.