Gstreamer+python+opencv解码rtsp流失败 - Firefly开源社区

import cv2
import numpy as np
import time
import os
def videocapture():
video_stream_path = 'rtspsrc location=rtsp://admin:Admin123@192.168.8.114//Streaming/Channels/1 latency=0 ! rtph264depay ! queue ! decodebin ! videoconvert ! appsink drop=true'
cap = cv2.VideoCapture(video_stream_path,cv2.CAP_GSTREAMER) # 生成读取摄像头对象
out_gst = 'appsrc is-live=true caps=video/x-raw,format=(string)BGR,framerate=(fraction)30/1 ! videoconvert ! ximagesink sync=false'
cap_out = cv2.VideoWriter(out_gst, cv2.VideoWriter_fourcc(*'H264'), 25, (1280, 720), True)
a = time.time()
while cap.isOpened():
ret, frame = cap.read() # 读取摄像头画面
print(frame.shape)
cv2.imshow('video', frame) # 显示画面
key = cv2.waitKey(1)
cap_out.write(frame) # 视频保存
# 按Q退出
if key == ord('q'): # or count >=75:
break
cap.release() # 释放摄像头
cap_out.release()
cv2.destroyAllWindows() # 释放所有显示图像窗口
if __name__ == '__main__':
videocapture()

复制代码

python test_save_capture_rtsp.py
[ WARN:0] global /home/firefly/Downloads/opencv-4.3.0/modules/videoio/src/cap_gstreamer.cpp (898) open OpenCV | GStreamer warning: unable to query duration of stream
[ WARN:0] global /home/firefly/Downloads/opencv-4.3.0/modules/videoio/src/cap_gstreamer.cpp (935) open OpenCV | GStreamer warning: Cannot query video position: status=1, value=0, duration=-1
(724, 1280, 3)

复制代码