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Digital-video-broadcasting-terrestrial (DVB-T) systems affected by in-channel interference are dealt with here. Attention is mainly paid to the experimental assessment of the video quality perceived by the end user when only in-channel interference degrades the transmission path. To this aim, a number of experiments are conducted through a proper testbed, which enlists a flexible DVB-T broadcasting platform. To confer reliability and generality to the research activity, different configurations of the transmission platform parameters are arranged; moreover, common types of interference are taken into account. Due to a proper cross-layer measurement approach, valuable relations involving values that physical and modulation quantities and application-level metrics assume at the same time are deduced. The ultimate goal is to derive helpful information and hints for designers and technicians that are to be applied to efficiently optimize the performance of a DVB-T system whenever in-channel interference is of major concern.