A transmission apparatus capable of ensuring transmission quality when switching one of duplicated video data items transmitted using different transmission paths, to the other thereof, for display. Encoding sections A and B perform first and second encoding processing for generating first and second data based on video data, respectively, so as to transmit the first and second data to a reception apparatus via first and second transmission paths, respectively. Information on a skew between the first and second data received by the reception apparatus via the first and second transmission paths is acquired, for controlling at least one of the encoding sections A and B based on the skew information such that the skew is reduced.