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• How to run ffmpeg on demand when someone opens my website with the player where a remote IP camera is displayed ?

  8 mai 2023, par alexiter

  I set up an nginx server to stream from an IP camera located elsewhere, I used a windows server because it was the one I had no use for (I usually prefer linux), I would need to know how I can make the ffmpeg command run only when someone opens the website where the player is located.

  


  This is my nginx.conf server code :

  


  worker_processes  1;

error_log  logs/error.log info;

events {
    worker_connections  1024;
}
rtmp {
    server {
        listen 1935;
        ping 30s;
        notify_method get;
        application live {
            live on;
            on_publish http://*******:8080/auth;
            dash on; 
            dash_path tmp/dash;
            
            
        }
    }
}
http{

   server {
        listen 8080;
        location /auth {
        if ($arg_psk = '*****') {
    return 201;
    }
  return 404;
  }
}
   
   server {
        listen 8443 ssl;
        server_name stream.*****.com;
        
        ssl on;
        ssl_certificate C:/Certbot/live/stream.*****.com/fullchain.pem;
        ssl_certificate_key C:/Certbot/live/stream.****.com/privkey.pem;
        ssl_session_timeout 5m;
        charset utf-8;
        location /dash {
            root tmp;
            add_header Cache-Control no-cache;
        }
        location / {
            root www;
        }
        

   }
}



  


  The command that I use from the DOS console in windows is this :

  


  ffmpeg -rtsp_transport tcp -i rtsp://*****:******@******.com:557/Streaming/Channels/101 -c copy -f flv -y -t 35 rtmp://********:1935/live/stream?psk=********


  


  Basically what I need is that ffmpeg is not running constantly, only when someone wants to view the video from the IP camera. (I have programmed ffmpeg to finish after 35 seconds, although I will put five minutes later)

  


• C pointer casting to and from Golang

  26 avril 2018, par nevernew

  I’m writing an app for the windows platform using FFmpeg and it’s golang wrapper goav, but I’m having trouble understanding how to pass the C pointers between C and Golang.

  I’ve stripped out all the relevant parts of the C code, the wrapper and my code, shown below :

  C code - libavutil/frame.h

  #include 
  
  
  
  typedef struct AVFrame {
  
  #define AV_NUM_DATA_POINTERS 8
  
      uint8_t *data[AV_NUM_DATA_POINTERS];
  
  }

  Golang goav wrapper

  package avutil
  
  
  
  /*
  
      #cgo pkg-config: libavutil
  
      #include <libavutil></libavutil>frame.h>
  
      #include 
  
  
  
      // C code I added:
  
      #include 
  
  
  
      void SaveFrame(const char* location, uint8_t *data, int width, int height) {
  
          FILE *pFile;
  
          int  y;
  
  
  
          // Open file
  
          pFile=fopen(location, "wb");
  
          if(pFile==NULL)
  
              return;
  
  
  
          // Write header
  
          fprintf(pFile, "P6\n%d %d\n255\n", width, height);
  
  
  
          // Write pixel data
  
          for(y=0; y/ Close file
  
          fclose(pFile);
  
      }
  
  */
  
  import "C"
  
  import (
  
      "unsafe"
  
  )
  
  
  
  type Frame C.struct_AVFrame
  
  
  
  func Data(f *Frame) *uint8 {
  
      // i think this is the function thats not working?
  
      return (*uint8)(unsafe.Pointer((*C.uint8_t)(unsafe.Pointer(&amp;f.data))))
  
  }
  
  func SaveFrame(location string, data *uint8, width int, height int) {
  
      C.SaveFrame(C.CString(location), unsafe.Pointer(data), C.int(width), C.int(height))
  
  }

  My Golang code

  package main
  
  
  
  import "github.com/giorgisio/goav/avutil"
  
  
  
  func main() {
  
      var frame *avutil.Frame
  
      var data *uint8
  
  
  
      //... initialize frame
  
  
  
      data = avutil.Data(frame)
  
      avutil.SaveFrame("frame0.ppm", data, 1920, 1080)
  
  }

  When I try to save the frame, the resulting image is garbled because the pointer is wrong, how do i fix this ?

• I don't know how to use laravel ffmpeg

  30 mars 2018, par Stephany. S123

  I just downloaded ffmpeg form my laravel application. Now I am trying to use it and I don’t how to use it. I am trying to compress my files when its uploaded. I know you might suggest for me to go to to https://packagist.org/packages/pbmedia/laravel-ffmpeg but thats not really telling me anything. Here is my code on my controller

  use FFMpeg ;

  $this->validate($request,array(
  
      'video' => 'file|required|mimes:mp4,flv,wmv,avi,mov,qt|max:102400',
  
  ));
  
  
  
  $pro=new Profile;
  
  $vid = $request->file('video');
  
  $filename = uniqid().$vid->getClientOriginalName();
  
  
  
  $y=FFMpeg::fromDisk('videos') ->open($vid) ->getFrameFromSeconds(10) ->export() ->toDisk('thumnails') ->save();
  
  
  
  $path = $vid->storeAs(
  
      'introvideo',
  
      $filename);
  
  
  
  $location = public_path('/vids',$filename);
  
  $vid->move($location);
  
  $pro->profile = $filename;
  
  
  
  $pro->save();