The present invention provides an image sensing apparatus including an encoding unit for converting video from an image sensing unit so as to generate stream data, and store the stream data in a buffer unit, a control unit for controlling the encoding unit, in a case where, in a fixed time recording mode for recording for a fixed time in response to an instruction to start recording, a second instruction to start recording is issued before the fixed time has elapsed since a first instruction to start recording was issued, to store in the buffer unit stream data that lasts for the fixed time corresponding to the first instruction to start recording, and stream data that lasts for the fixed time corresponding to the second instruction to start recording, and a recording unit for recording each piece of stream data stored in the buffer unit on a recording medium.