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电脑用wifi连接到内网摄像头上,用rtsp获取视频流,然后再用rtmp协议从lte模块上推流出去。
ubuntu 16.04 使用quectel ec20可以直接上网,ubuntu 18.04 使用huawei e3372。用的是mobile broadband 不是 pppd
要先断开 wifi (rtsp),然后插入 lte dongle,再然后运行 sudo route add -net 0.0.0.0 dongle_name。完成以后再连上wifi摄像头
import cv2
import subprocess
rtsp = "rtsp_address"
rtmp = "rtmp_address"
cap = cv2.VideoCapture(rtsp)
#size = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)), int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))
size = (1280,720)
sizeStr = str(size[0]) + 'x' + str(size[1])
command = ['ffmpeg',
'-y', '-an',
'-f', 'rawvideo',
'-vcodec','rawvideo',
'-pix_fmt', 'bgr24',
'-s', sizeStr,
'-r', '25',
'-i', '-',
'-c:v', 'libx264',
'-pix_fmt', 'yuv420p',
'-preset', 'ultrafast',
'-f', 'flv',
rtmp]
pipe = subprocess.Popen(command
, shell=False
, stdin=subprocess.PIPE
)
while 1:
ret, frame = cap.read()
cv2.imshow("frame", frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
pipe.stdin.write(frame.tostring())
cap.release()
pipe.terminate()