https://github.com/opencv/opencv_contrib/issues/1786 Seems like cuda video decoder is deprecated. https://docs.nvidia.com/cuda/video-decoder/index.html That's why -DBUILD_opencv_cudacodec=OFF fixes the issue. 转到了NVIDIA Video Codec SDK....
cv::cudacodec::createVideoReader是OpenCV库中的一个函数,它用于创建一个视频读取器对象,该对象能够高效地解码和读取存储在GPU内存中的视频文件或视频流。通过使用CUDA加速,这个函数能够显著提高视频处理的性能,特别是在处理高分辨率或高帧率视频时。 列出cv::cudacodec::createVideoReader函数的参数及其含义: ...
上次我们简单介绍了OpenCV及计算机视觉的定义，今天我们继续说说基础知识。今天主要讲Python和图像基本处理。
OpenCV => 4.7 import cv2 import time cap = cv2.cudacodec.createVideoReader("D:/obsrecord/tiktok-live-sample2.flv") t1 = time.time() while True: ret, frame = cap.nextFrame() if not ret: t2 = time.time() print(t2 - t1) break and get the me...
System information (version) OpenCV => 4.5.2 Operating System / Platform => linux Compiler => gcc Detailed description I built opencv_contrib_python by myself. Here is the build information Extra dependencies: m pthread cudart_static dl ...
Include path: D:/Opencv-source/opencv-3.4.12/3rdparty/include/opencl/1.2 Link libraries: ...
# A torch tensor/ or nvImageCodec Image can be wrapped into a CVCUDA Object using the "as_tensor"# function in the specified layout. The datatype and dimensions are derived# directly from the torch tensor.nvcvInputTensor=cvcuda.as_tensor(inputImage,"HWC")image=cp.asnumpy(nvcvInputTensor...
cv2.error: OpenCV(4.6.0) /io/opencv/modules/imgcodecs/src/loadsave.cpp:801: error: (-215:Assertion failed) !_img.empty() in function 'imwrite' ileNotFoundError: [Errno 2] No such file or directory: '/home/whl/kanghaidong/project/TransferLearning-Tasks/PASCAL_VOC/VOCdevkit/VOC2020/Anno...
#include <opencv2/cudacodec.hpp> Public Member Functions virtual ~VideoReader () virtual FormatInfo format () const =0 Returns information about video file format. virtual bool nextFrame (GpuMat &frame, Stream &stream=Stream::Null())=0 Grabs, decodes and returns the next video frame. Detail...
System information (version) OpenCV => 4.5.5/4.6.0/4.7.0 Operating System / Platform => Linux x64 / Ubuntu 20.04 , run in docker Compiler => [gcc] cuda 11.7 nvida video sdk 11.1.5 log: CMakeError.log CMakeOutput.log Steps to reproduce im...