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• TCL script unable to work with multiple camera on windows 7 platform

  27 novembre 2017, par M. D. P

  My TCL script works properly for single camera. the TCL script is as follow :

  proc liveStreaming {} {
  
  
  
      #open the config file.
  
      set f [open "C:/main/video_config.txt" r] 
  
  
  
      #To retrive the values from the config file.
  
      while {![eof $f]} {
  
          set part [split [gets $f] "="]
  
          set props([string trimright [lindex $part 0]]) [string trimleft [lindex $part 1]]
  
      }
  
      close $f 
  
  
  
      #camera selection to live streaming.
  
      set camera "video"
  
      append cctv $camera "=" $props(cctv)
  
  
  
      #ffmpeg command to capture live streaming in background
  
      exec ffmpeg -f dshow -s 1280x720 -i $cctv c:/test/sample.avi >& c:/test/temp.txt &
  
  
  
  }
  
  liveStreaming
  
  
  
  //above code is to capture video using ffmpeg and tcl.

  My text file "video_config" is as follow :

  cctv=Logitech HD Webcam C525

  as, i want it to run with multiple camera : the text file should be as follow :

  cctv=Integrated Webcam,Logitech HD Webcam C525

  The problem is "," (comma), my TCL script is unable to predict the coma (,) . can any one provide me the proper TCL script which can predict the coma, so that my TCL script can work with multiple camera.

  Error Report :

  ffmpeg version N-89127-g8f4702a93f Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.2.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
  
    libavutil      56.  0.100 / 56.  0.100
  
    libavcodec     58.  3.103 / 58.  3.103
  
    libavformat    58.  2.100 / 58.  2.100
  
    libavdevice    58.  0.100 / 58.  0.100
  
    libavfilter     7.  2.100 /  7.  2.100
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  [dshow @ 05944ac0] Could not find video device with name [Integrated Webcam,Logitech HD Webcam C525] among source devices of type video.
  
  video=Integrated Webcam,Logitech HD Webcam C525: I/O error

• Convert ffmpeg batch file into Linux shell script

  30 août 2023, par UNOIT

  I have been using this ffmpeg batch file on Windows to check for video errors

  


  c :\ffmpeg\bin\ffmpeg -v error -i "% dpnx1" -f null - >"% dpnx1.error.txt" 2>&1
pause

  


  I just drag and drop a file or folder onto the .bat file and it creates an error.txt file for each video

  


  Can someone convert this to a Linux shell script

  


  I tried the information provided at

  


  https://linuxconfig.org/how-to-use-ffmpeg-to-convert-multiple-media-files-at-once-on-linux

  


  but I couldn't figure out how to write to an error.txt file for each video

  


• ffmpeg program doesn't running on shell script with java Application

  20 octobre 2017, par Hae-Yoon Jo

  I code java Application and running Linux shell-script when java App running on Linux server.
  The linux shell-script is running. But, i need runnning ffmpeg program by shell.

  1. the ffmpeg is running with shell-script command by ./shellName.sh

  2. ffmpeg is not running with java App run by .

     • only ffmpeg command in shell.
     • working mkdir command
     • working pwd command

  #!/bin/bash
  
  echo -n "ffmpeg cmd :"
  
      /home/popsline/ffmpeg -i /home/popsline/sub02_chocolat.mp4 -r 0.14 -ss 00:00:20 -t 10:00:00 -vframes 10 -f image2 -y /home/popsline/img/iamges%d.png
  
  mkdir /home/username/test
  
  pwd

  Java code.

  HomeController.java refer sh.java as Object.
  so codes is follows :

  HomeController.java

  /**
  
   * Simply selects the home view to render by returning its name.
  
   */
  
  @RequestMapping(value = "/", method = RequestMethod.GET)
  
  public String home(Locale locale, Model model) {
  
      logger.info("Welcome home! The client locale is {}.", locale);
  
  
  
      Sh sh = new Sh();
  
      sh.shRun();
  
  
  
      return "home";
  
  }

  sh.java

  private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
  
  
  
  public void shRun(){
  
  
  
      Runtime rt = Runtime.getRuntime();
  
      Process proc = null;
  
      InputStream is = null;
  
      BufferedReader bf = null;
  
  
  
      try {
  
          String[] cmd = {
  
                  "/bin/sh"
  
                  , "-c"
  
                  , "/usr/local/bin/creaThum.sh"
  
          };
  
  
  
          proc = rt.exec(cmd);
  
          proc.getInputStream();
  
          is = proc.getInputStream();
  
          bf = new BufferedReader(new InputStreamReader(is));
  
  
  
          while (true) {
  
              String info = bf.readLine();
  
              if(info == null || info.equals("")){
  
                  break;
  
              }
  
              logger.info("info haeyoon:: " + info);
  
          }
  
      } catch (Exception e) {
  
          logger.info(e.getMessage());
  
      }
  
  }