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• How to send output stream from ffmpeg into a servlet

  12 mai 2016, par Antonio Mele

  I am trying to get the video stream from an ip camera in my network and redirect it to a servlet.

  Using this command to get the video and redirect the output to standard output

  avconv -f mjpeg -y -i 'http://USER:PASSWORD@192.168.1.5/video.cgi' -r 3 -loglevel 16 -c:v mjpeg -an -qscale 10 -f mp4 -

  Then I would like to call this from a java servlet using ProcessBuilder and sending the streaming to servlet output. So when I will open it from the browser I will get the video streaming.

  I am trying to do this to be able to encode the video as I prefer and to be able to call my web server from Internet to access any camera in my network and avoid to have a port forwarding or nat for every camera.

  If you have any suggestions for other solutions to expose my camera outside my local network having only my public ip (without having to configure my router) are well accepted :)

  thank you

• ffplay, rtsp and tcp transport protocol

  27 juillet 2022, par Denis Gottardello

  I have a problem on connect to a rtsp camera using ffplay.
The camera is under a router that permits only the TCP protocol.
I can watch the camera using ffplay only if I am in the same network of the camera.
So, when I am out, using this command line

  


  ffplay rtsp://address:554/onvif1


  


  or this

  


  ffplay -rtsp_transport tcp rtsp://address:554/onvif1


  


  I cannot watch the camera.
This is the output of ffplay (the latest).

  


  [rtsp @ 059ee680] Nonmatching transport in server reply  0B f=0/0
rtsp://address:554:/onvif1: Invalid data found when processing input


  


  Trying with VLC and I can watch the camera without any problem, both when I am in the same network or when I am out. The VLC output says that VLC uses TCP.
Has someone got a suggestion ?

  


• 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 ?