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• Get PiD of a program created by CreateProcess in Delphi

  10 avril 2014, par Helios

  i use delphi XE3 i call cmd and open ffmpeg in a thread and pass commands to it

  i would like to run 5 thread or more at same time

  procedure RunFF.Execute;
  
  var
  
  
  
    SecAtrrs: TSecurityAttributes;
  
    StartupInfo: TStartupInfo;
  
    ProcessInfo: TProcessInformation;
  
    StdOutPipeRead, StdOutPipeWrite: THandle;
  
    WasOK: Boolean;
  
    pCommandLine: array[0..255] of AnsiChar;
  
    BytesRead: Cardinal;
  
    WorkDir,result: string;
  
    Handle: Boolean;
  
  begin
  
    Result := '';
  
    workdir :='C:\Users\M\Desktop\ffmpeg\bin';
  
    with SecAtrrs do begin
  
      nLength := SizeOf(SecAtrrs);
  
      bInheritHandle := True;
  
      lpSecurityDescriptor := nil;
  
    end;
  
    CreatePipe(StdOutPipeRead, StdOutPipeWrite, @SecAtrrs, 0);
  
    try
  
      with StartupInfo do
  
      begin
  
        FillChar(StartupInfo, SizeOf(StartupInfo), 0);
  
        cb := SizeOf(StartupInfo);
  
        dwFlags := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;
  
        wShowWindow := SW_HIDE;
  
        hStdInput := GetStdHandle(STD_INPUT_HANDLE); // don't redirect stdin
  
        hStdOutput := StdOutPipeWrite;
  
        hStdError := StdOutPipeWrite;
  
      end;
  
   //   WorkDir := Work;
  
      Handle := CreateProcess(nil, PChar('cmd.exe /C ' + cmd2),
  
                              nil, nil, True, 0, nil,
  
                              PChar(WorkDir), StartupInfo, ProcessInfo);
  
  
  
      CloseHandle(StdOutPipeWrite);
  
      if Handle then
  
        try
  
          repeat
  
            WasOK := ReadFile(StdOutPipeRead, pCommandLine, 255, BytesRead, nil);
  
            if BytesRead > 0 then
  
            begin
  
              pCommandLine[BytesRead] := #0;
  
              Result := Result + pCommandLine;
  
              form3.Memo1.Text := result;
  
            end;
  
          until not WasOK or (BytesRead = 0);
  
          WaitForSingleObject(ProcessInfo.hProcess, INFINITE);
  
        finally
  
          CloseHandle(ProcessInfo.hThread);
  
          CloseHandle(ProcessInfo.hProcess);
  
        end;
  
    finally
  
      CloseHandle(StdOutPipeRead);
  
    end;
  
  
  
  
  
  end;

  how do i get the PiD of the ffmpeg or cmd so i can kill it !! because when i close my application cmd and ffmpeg keep running ..

• How to apply filter to video using ffmpeg c program android ndk

  13 juillet 2016, par Rajkumar

  I am newbie to ffmpeg with android. I have an input video birds.mp4 that have following settings

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'birds.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.59.106
  
    Duration: 00:00:21.60, start: 0.000000, bitrate: 574 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x176 [
  
  SAR 44:45 DAR 16:9], 440 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt
  
  p, 127 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  I have compiled ffmpeg with libx264 as *.so file for android. And i write a Jni wrapper. Now I want to apply a filter to that input video and save it to output.mp4 with same setting as shown. I know basic terminologies encoding, decoding, muxing, transcoding.
  I want to know How to do this task ? and What are the techniques involved to do this task ?

  I use ffmpeg-3.1 c-source code grabbed from github and x264 from videolan site. i refer this sample it doesn’t guide me.

  If anybody experienced this problem please guide me right direction.

• I'm trying to use FFmpeg with command prompt in my python program, but it doesnt execute [on hold]

  26 mai 2018, par MilkToast

  I’ve tried to do it a bunch of different ways but each time it execute. The line works fine in the command prompt, but I cant get it to work from python.

  check_output(r"ffmpeg -i C:\Users\jared\Desktop\Rev\videosnshit\howto.mp4 -vn -ar 44100 -ac 1 -b:a 32k -f wav audio.wav", shell=True)

  // This is the bit that works fine in command prompt :

  ffmpeg -i C:\Users\jared\Desktop\Rev\videosnshit\howto.mp4 -vn -ar 44100 -ac 1 -b:a 32k -f wav audio.wav

  I’m probably being dumb, so any help would be great ! thanks !