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• I want to be able to view the CCTV screen on the web

  12 mars 2019, par 윤성호

  I want to be able to view the CCTV screen on the web.

  I have been working on a project that allows the ip camera to be viewed on the web.
  Then I was asked to make Coaxial camera visible on the web.
  So I decided to use DVR.
  First, I connected the DVR to the router.
  Then the input of the coaxial camera is received by the DVR and the DVR transmits the information through the router.
  Through this process, i confirmed that rtsp works normally.
  But it didn’t work on the web.

  I am currently using the nginx web server.
  and use ffmpeg to send rtsp information to rtmp on my nginx web server.
  The web server will then transform it into an hls (index.m3u8) file.
  I think something went wrong during this process.

  Nginx RTMP Config

  # RTMP Config
  
  rtmp {
  
      server {
  
          listen 1935; # Listen on standard RTMP port
  
          chunk_size 4000;
  
          application live{
  
              live on;
  
              deny play all;
  
              push rtmp://localhost/play;
  
              on_publish http://localhost:3001/api/on-live-auth;
  
              on_publish_done http://localhost:3001/api/on-live-done;
  
          }
  
          application play {
  
              live on;
  
              # Turn on HLS
  
              hls on;
  
              hls_nested on;
  
              hls_fragment_naming system;
  
              hls_path /home/banana/nginx/live;
  
              hls_fragment 3;
  
              hls_playlist_length 60;
  
  
  
              # disable consuming the stream from nginx as rtmp
  
              #deny play all;
  
          }
  
      }
  
  }
  
  # End RTMP Config

  FFMPEG command

  ffmpeg -i rtsp://<cameraip> -c:v copy -rtsp_transport tcp -preset veryfast -c:a copy -fflags +igndts+genpts -f flv rtmp://localhost/live/<cameraid>
  
  </cameraid></cameraip>

  Test results

  IP Camera RTSP address = admin:qwerty1.@ssnet4.iptime.org:555/trackID=3

  DVR RTSP address = admin:hrd-442s@hwakptz.iptime.org:4524/1

  Run the above rtsp addresses in vlc player respectively

  Success : IP Camera RTSP address , DVR RTSP address

  IP camera HLS address = http://168.131.150.80:4567/live/5c28ae28c6cd0c6c329e1ebc/index.m3u8

  DVR HLS address = http://168.131.150.80:4567/live/5c8746c9d7d74a600edf2460/index.m3u8

  Run the above rtsp addresses in vlc player respectively

  Sucess : IP Camera HLS address

  Fail : DVR HLS address

  This is the same result on the react player.

  const streamUrl = `http://168.131.150.80:4567/live/<cameraid>/index.m3u8`;
  
  <reactplayer width="{&quot;100%&quot;}" height="{&quot;100%&quot;}" url="{streamUrl}" playing="{true}" controls="{false}" muted="{true}"></reactplayer>
  
  </cameraid>

  Question

  1. Is there a way to see rtsp directly on the web ?
  2. What’s the problem and what’s the other way ?

• How does chromium apk load external lib-ffmpeg ?

  18 juin 2024, par weixiong wan

  Is there a way to make chromium APks that do not contain libffmpeg and only load external libffmpeg at runtime ?

  


  I tried unpacking, unpacking, and signing the TrichromeLibrary.apk with apktool, but the trichromelibrary.apk didn't install to the board.

  


• How to stream MacOS desktop screen over local IP using ffmpeg or python or objective-C or Swift ?

  24 novembre 2024, par Akella Niranjan

  I am trying to build a service/application/script on MacBook that can help me share my desktop screen [Mirror my screen] over a local IP address.

  


  Or I want to display it on a webpage using flask framework using python.

  


  I just wish to look at my desktop screen along with the mouse movements on a web-browser, just like a Remote Desktop.

  


  I did try the following command, but when I try to open my browser and go to the IP address it just shows a blank screen

  


  sudo ffmpeg -f avfoundation -framerate 30 -pix_fmt uyvy422 -i "0" -listen 1 -f mp4 -movflags frag_keyframe+empty_moov -preset ultrafast -tune zerolatency  "http://localhost:8000"


  


  Please kindly help !!