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• Unable to stream only audio using ffmpeg to Wowza RTSP Push Streaming Server

  8 août 2017, par Faizuddin Mohammed

  I have tried many options with ffmpeg to be able to stream only audio to Wowza Media Server.

  ffmpeg -f dshow -re -i audio="Microphone (Camera Audio)" -f rtsp "rtsp://xxxxx:kkkkk@xxxxxx.entrypoint.cloud.wowza.com:1935/app-xxxx/yyyyy.sdp"

  I’m able to write to an MP3 file, but when I try and do this rtsp stream, no data is being passed.

  I get an output that’s like : size=N/A time=00:00:09.00 bitrate=N/A

  What am I missing or is this not the way to do it ?

• Raspberry Pi and FFMpeg live streaming video to backend Node.js server, but how do I deliver it to the front end ?

  2 août 2023, par qwet142

  I'm attempting this setup to live stream video from a Raspberry Pi to a publicly available website, and from the backend server using Node.js and Express, I would like to serve it to the front end with minimal latency available to many viewers (will be hosted somewhere like Netlify to handle distribution).

  


  WebRTC is too complex for my use case and timeframe. HLC appears to have too high a latency as I need <4s consistently. I would like to something compatible with Node.js. I am a beginner in this domain, familiar only with general programming and web development.

  &#xA;

• How to use the video datastreaming I get from nginx server ?

  31 janvier, par Jennie Tsai

  I have three nodes in my network :&#xA;dataServer --- node1 --- node2.&#xA;My video data "friends.mp4" is saved on dataServer. I started both dataServer and node2 as rtmp-nginx servers. I use ffmpeg on node1 to pull datastreaming on dataServerand and push the converted datastreaming to the application "live" on node2.&#xA;Here's my configuration of nginx.conf for node2.

  &#xA;

  worker_processes  1;
events {
    worker_connections  1024;
}

rtmp {
    server {

    listen 1935;

    chunk_size 4000;

application play {
        play /usr/local/nginx/html/play;
    }

application hls {
        live on;
        hls on;
        hls_path /usr/local/nginx/html/hls;
    hls_fragment 1s;
    hls_playlist_length 4s;
    }

application live  
    {
        live on; 
    allow play all;
    }
}
}


  &#xA;

  I want to run this python code to recognize the faces in friends.mp4 :

  &#xA;

  import cv2

vid_capture=cv2.VideoCapture("rtmp://127.0.0.1:1935/live")
face_detect = cv2.CascadeClassifier('./haarcascade_frontalface_default.xml')
if (vid_capture.isOpened() == False):
    print("Error opening the video file")
else:
    fps = vid_capture.get(5)
    print("Frames per second : ", fps,'FPS')
    frame_count = vid_capture.get(7)
    print('Frame count : ', frame_count)

while(vid_capture.isOpened()):
    ret, frame = vid_capture.read()
    if ret == True:
        gray = cv2.cvtColor(frame, code=cv2.COLOR_BGR2GRAY)
        face_zone = face_detect.detectMultiScale(gray, scaleFactor=1.1, minNeighbors=3)
        for x, y, w, h in face_zone:
            cv2.rectangle(frame, pt1 = (x, y), pt2 = (x+w, y+h), color = [0,0,255], thickness=2)
            cv2.circle(frame, center = (x + w//2, y + h//2), radius = w//2, color = [0,255,0], thickness = 2)
        cv2.imshow('Frame', frame)
        key = cv2.waitKey(50)
        if key == ord('q'):
            break
    else:
        break
vid_capture.release()
cv2.destoryAllWindows()


  &#xA;

  But I can't do it because cv2.VideoCapture can not get the data streaming from rtmp://127.0.0.1:1935/live. Maybe it is because this path is not a file. How can I get the video streaming received by the nginx server and put it to my openCV model ? Is there a way that I just access the dataStreaming received by the nginx server and make it a python object that openCV can use ?

  &#xA;