opencv4.5.5 using VideoReader can not webrtc

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the stream: webrtc://10.10.2.3/exam/2021091400479_topStream

using RTC player OK enter image description here

but using opencv "VideoReader"

[ERROR:[email protected]] global opencv455/opencv/modules/videoio/src/cap.cpp (166) open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.5.5) opencv455/opencv/modules/videoio/src/cap_images.cpp:267: error: (-215:Assertion failed) number < max_number in function 'icvExtractPattern'

terminate called after throwing an instance of 'cv::Exception' what(): OpenCV(4.5.5) opencv455/opencv_contrib/modules/cudacodec/src/cuvid_video_source.cpp:66: error: (-217:Gpu API call) CUDA_ERROR_FILE_NOT_FOUND [Code = 301] in function 'CuvidVideoSource'

Aborted (core dumped)

enter image description here

using RTMP is OK

but RTC or WEBRTC is failed enter image description here

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