cv2.CAP_PROP_POS_FRAMES是OpenCV库中用于视频帧提取的一个常量。它表示视频文件中的帧位置。通过设置该属性,可以指定要提取的特定帧的位置。 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.mp...
我记得之前我粗略写过I帧的判断：H264编码NALU结构介绍与I帧判断方法，但也是粗略的写了一下，本篇文章...
System Information Name: opencv-python Version: 4.8.0.76 System: Ubuntu 20.04 Python Version: 3.11.9 Detailed description I use cap.set(cv2.CAP_PROP_POS_FRAMES, start_frame) to jump to the 360th frame, with a frame rate of 60, which is 6...
使用OpenCV 2.x 时,代码应按以下格式编写: post_frame = cap.get(cv2.cv.CV_CAP_PROP_POS_FRAMES) 从opencv 3.0.0-dev python bindings not working properly,我知道 cv2.cv 子模块在 opencv3.0 中被删除,一些常量也被更改 但是cv2.CV_CAP_PROP_POS_FRAMES 对我不起作用,那我该怎么办? 原文由shady发布...
while FFmpeg will return duplicates without issues. In consequence, when calling VideoCapture::set with CAP_PROP_POS_FRAMES you will get a frame offset by something approximate (or likely equal) to the number of duplicate frames in the video file, or the number of duplicate frames in video fi...
问OpenCV在使用cap.set时变得非常慢(cv2.CAP_PROP_POS_FRAMES)EN我在python3和opencv-python 4.5.5....
cv2.CAP_PROP_POS_FRAMES是OpenCV库中用于视频帧提取的一个常量。它表示视频文件中的帧位置。通过设置该属性,可以指定要提取的特定帧的位置。 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'vide...
CAP_PROP_FRAME_COUNT & CAP_PROP_POS_FRAMES do not work#12091 kanehekiliopened this issueJul 28, 2018· 7 comments Beginning with the latest version, no access to frame size or positioning is possible. Setter methods will return False, getter will return 0.0. ...
cap("C:\myvideo.mp4"); cap.set(CAP_PROP_POS_FRAMES,503); // goto Frame 503 fprintf(0,"current frame: %f\n",cap.get(CAP_PROP_POS_FRAMES); // returns 503 cap.read(rgb_frame); // returns Frame 500 The behavior is consistent with both CAP_PROP_POS_FRAMES and CAP_PROP_POS_MSEC...