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项目位置:OpenCV-Sample
代码位置:36-GetFrameTimestamp.py
我们在对视频文件做分析的时候,往往对某一帧数据进行标注,所以当Opencv读取帧数据的时候,要带有这帧数据的时间戳,OpenCV获取的时间戳与ffmpeg里面的时间戳相比还是简单很多,让用户知道这帧数据处在视频文件的那个位置。
代码如下:
import cv2 cameraCapture = cv2.VideoCapture('./res/2_003_013.mp4') success, frame = cameraCapture.read() while success: if cv2.waitKey(1) == 27: break cv2.imshow('Test camera', frame) success, frame = cameraCapture.read() milliseconds = cameraCapture.get(cv2.CAP_PROP_POS_MSEC) seconds = milliseconds//1000 milliseconds = milliseconds%1000 minutes = 0 hours = 0 if seconds >= 60: minutes = seconds//60 seconds = seconds % 60 if minutes >= 60: hours = minutes//60 minutes = minutes % 60 print(int(hours), int(minutes), int(seconds), int(milliseconds)) cv2.destroyAllWindows() cameraCapture.release()
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