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When you play back the recording file, you can use the scroll box to drag it to go forward/backward to the desired video. The system shows the recording resolution of each channel and the frames on the upper left corner of each screen. When you play the video in 1-Cam mode, you will see some color blocks on the slider. BLUE blocks mean recorded videos are available. Green blocks mean there is detected motion during the time segment. Black blocks mean no data recorded. Yellow blocks mean alert ev