要使用cv2.CAP_PROP_POS_FRAMES提取视频帧,可以按照以下步骤进行操作: 导入OpenCV库:import cv2 打开视频文件:video = cv2.VideoCapture('video.mp4')这里的'video.mp4'是视频文件的路径,可以根据实际情况进行修改。 设置要提取的帧位置:frame_position = 100 # 设置要提取的帧位置,这里以100帧为例 vid...
目前我使用的是opencv 3.1.0,执行如下代码时遇到如下错误: post_frame= cap.get(cv2.CV_CAP_PROP_POS_FRAMES) 我收到以下错误消息: 文件“videoOperation.py”,第 37 行,在 pos_frame = cap.get(cv2.CV_CAP_PROP_POS_FRAMES) AttributeError: ‘module’ object has no attribute ‘CV_CAP_PROP_POS_FRA...
我的用例代码如下所示，其中我构建了一个视频播放器，它具有逐帧(a，b)移动和播放/暂停(spacebar)。...
cv2.CAP_PROP_FRAME_COUNT 视频总的帧数 cv2.CAP_PROP_FRAME_WIDTH 帧的宽度 cv2.CAP_PROP_FRAME_HEIGHT 帧的高度 cv2.CAP_PROP_POS_MSEC 当前视频读取的时间戳 cv2.CAP_PROP_POS_FRAMES 基于0的索引将被解码/捕获下一帧 cv2.CAP_PROP_POS_AVI_RATIO cv2.CAP_PROP_FOURCC 视频编码器格式 cv2.CAP_PROP_F...
cap.set(cv2.CAP_PROP_POS_FRAMES, int(start_time * fps)) interval = 1 if sample_fp > 0: interval = fps // sample_fp else: sample_fp = fps if interval == 0: interval = 1 inds = [ind for ind in np.arange(0, fps, interval)] ...
get(cv2.CAP_PROP_FPS) * time) + self.search_switch(cap, key, thresh) number_of_frames = max(number_of_frames, 0) number_of_frames = min(number_of_frames, cap.get(cv2.CAP_PROP_FRAME_COUNT)) cap.set(cv2.CAP_PROP_POS_FRAMES, number_of_frames) return number_of_frames ...
isOpened()用于判断摄像头或者视频已经打开, 若是没有打开就需要使用cap.open()来打开 get(属性 ID)获取视频的相关信息,可算的参数值为 0 - 18,也可以使用具体的属性名称,在3.0中需要把CV_去掉: CAP_PROP_POS_MSEC CAP_PROP_POS_FRAMES CAP_PROP_POS_AVI_RATIO ...
cv.putText(frame, str(capture.get(cv.CAP_PROP_POS_FRAMES)), (15, 15), cv.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 0)) cv.imshow('Frame', frame) cv.imshow('FG Mask', fgMask) keyboard = cv.waitKey(30) if keyboard == 'q' or keyboard == 27: ...
CV_CAP_PROP_POS_AVI_RATIO Relative positionofthe video file:0- startofthe film,1-endofthe film. CV_CAP_PROP_FRAME_WIDTH Widthofthe frames in the video stream. CV_CAP_PROP_FRAME_HEIGHT Heightofthe frames in the video stream. CV_CAP_PROP_FPS Frame rate. ...
Static CV_32F := 5 Static CV_64F := 6 Static CV_16F := 7 Static MAT_DEPTH_MASK := OpenCV.DEPTH_MAX - 1Static CV_8UC1 := OpenCV.MAKETYPE(OpenCV.CV_8U, 1) Static CV_8UC2 := OpenCV.MAKETYPE(OpenCV.CV_8U, 2) Static CV_8UC3 := OpenCV.MAKETYPE(OpenCV.CV_8U, 3) ...