Inter prediction device and device for transmitting bit stream

The application relates to an inter prediction device and a device for transmitting a bitstream. An embodiment of the present invention provides an inter prediction method comprising the steps of: extracting a merge candidate flag and offset information from a bitstream; selecting a merge candidate corresponding to the extracted merge candidate flag from a merge candidate list including a neighboring block of the current block as a merge candidate; determining a motion vector of the current block by applying offset information to the motion vector of the selected merge candidate; and generating, as a prediction block of the current block, a block indicated by the motion vector of the current block in a reference picture referenced by the selected merge candidate. 本申请涉及帧间预测设备和发送比特流的设备。本发明的实施方式提供了一种帧间预测方法，该方法包括以下步骤：从比特流中提取合并候选标志和偏移信息；从包括当前块的相邻块作为合并候选的合并候选列表中选择与提取的合并候选标志相对应的合并候选；通过将偏移信息应用于所选择的合并候选的运动矢量来确定当前块的运动矢量；以及生成在由所选择的合并候选参考的参考图片中由当前块的运动矢量指示的块作为当前块的预测块。