Rat 7M Videos Subject 1 - Day 1

All videos for Subject 1, Day 1 of Rat 7M.<br><br>The video naming scheme is s{subject_id}-d{recording_day}-camera{camera_id}-{starting_frame_idx}.mp4.<br><br>Subject ID, recording day, and camera ID match videos to the data in the motion capture and camera calibration parameter .mat files.<br><br>Videos are provided in 3500 frame chunks, with the index of the starting frame in each file denoted by the {starting_frame_idx} portion of the filename.<br><br>Using the 'frames' field in the 'cameras' struct inside 'mocap.mat', the corresponding video file and frame index can be calculated by used frame_idx // 3500 to get the {starting_frame_idx} and frame_idx % 3500 to get the frame in that file. <br>

大鼠7M的受试对象1、录制第1天的全部视频。<br><br>视频命名规则为：s{subject_id}-d{recording_day}-camera{camera_id}-{starting_frame_idx}.mp4。<br><br>受试对象编号、录制天数与摄像头编号可用于将视频与动作捕捉（motion capture）及摄像头校准参数.mat文件中的数据进行匹配。<br><br>所有视频均以3500帧为单位进行分段存储，每个文件的起始帧索引由文件名中的{starting_frame_idx}字段标识。<br><br>通过读取'mocap.mat'中'cameras'结构体的'frames'字段，可通过总帧索引frame_idx计算得到对应的视频文件与帧索引：使用frame_idx // 3500获取{starting_frame_idx}，使用frame_idx % 3500获取该分段文件内的帧序号。