A video apparatus and a method of reverse playing video data. The video apparatus includes a controller, a first memory, a second memory, a video decoder, and a display device. The controller obtains a first and second group of pictures (GOP) from a data storage medium. The first memory, coupled to the controller, receives the first GOP. The second memory, coupled to the controller, receives the second GOP. The video decoder, coupled to the first and second memories, decodes video frames in the first and second GOPs. The display device, coupled to the video decoder, displays the decoded video frames. Concurrently, the second memory receives the second GOP, and the video decoder decodes the video frames in the first GOP and then the display device displays the decoded video frames in the first GOP in a reverse playback order. The provide video device and the method for reverse displaying displayed video data is capable of concurrently executing data acquisition of the previous image group, as well as decoding and reverse displaying the present image group in order to reduce display delay caused by the file re-buffering.