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• lavc/libaribcaption : add MSZ character related options

  17 octobre 2023, par TADANO Tokumei

  lavc/libaribcaption : add MSZ character related options
  This patch adds two MSZ (Middle Size ; half width) character
  
  related options, mapping against newly added upstream
  
  functionality :
  * `replace_msz_japanese`, which was introduced in version 1.0.1
  
    of libaribcaption.
  
  * `replace_msz_glyph`, which was introduced in version 1.1.0
  
    of libaribcaption.
  The latter option improves bitmap type rendering if specified
  
  fonts contain half-width glyphs (e.g., BIZ UDGothic), even
  
  if both ASCII and Japanese MSZ replacement options are set
  
  to false.
  As these options require newer versions of libaribcaption, the
  
  configure requirement has been bumped accordingly.
  Signed-off-by : TADANO Tokumei <aimingoff@pc.nifty.jp>
  

  • [DH] configure
  • [DH] doc/decoders.texi
  • [DH] libavcodec/libaribcaption.c
  • [DH] libavcodec/version.h

• Killing all child processes

  12 juin 2016, par ErraticFox

  I have written a onclick function that runs child process for a command line for ffmpeg. Though I can’t seem to force close or kill the process in the middle of it. I’ve tried multiple ways such as child.kill() along with SIGINT, SIGKILL, SIGHUP, SIGQUIT, and SIGTERM and it continuously runs in the background still until finished or killed in the task manager. So how can I kill all the process related to the exec ?

  Here’s my current code :

  function submitBtn() {
  
      var selectVal1 = $("#inputFile1 option:selected").val(),
  
          selectVal2 = $("#inputFile2 option:selected").val(),
  
          selectOpt2 = $("#inputFile2 option:selected").text().toLowerCase()
  
  
  
      if (!selectVal1 || !selectVal2) {
  
          Materialize.toast('Please select your formats', 4000)
  
      } else if ($("#uploadFile").val() === '') {
  
          Materialize.toast('Please select your file', 4000)
  
      } else {
  
          var process = require("child_process")
  
          var inputDir = uploadFile.files[0].path
  
          var dir = inputDir.split("\\")
  
          var pop = dir.pop()
  
          var outputDir = dir.join("\\")
  
          var cmd = `ffmpeg -y -i "${inputDir}" "${outputDir}\\output.${selectOpt2}"`
  
  
  
          $("#load").removeClass("disabledLoad")
  
          func = process.exec(cmd, function(error, stdout, stderr) {})
  
  
  
          func.on('exit', function() {
  
              $("document").ready(function() {
  
                  $("#load").addClass("disabledLoad")
  
                  Materialize.toast('Conversion compelete!', 4000)
  
              })
  
          })
  
  
  
      }
  
  }
  
  
  
  function exitBtn() {
  
      //var remote = require('electron').remote
  
      //var window = remote.getCurrentWindow()
  
      //window.close()
  
      func.kill()
  
  }

  I even tried renaming process to proc and then doing

      process.on('exit', function () {
  
      console.log('process is about to exit, kill ffmpeg');
  
      func.kill()
  
  })

  in exitBtn but still nothing. It doesn’t give errors or log my string I put.

• FFMPEG xstack not recognizing inputs

  12 août 2020, par Josh

  I'm trying to arrange three input videos into a single output video using ffmpeg's xstack. I currently have the operations working with a vstack followed by an hstack, but would like to combine them into an xstack for performance.

  


  I've tried copying the syntax from multiple locations such as :

  


  https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20input%20videos%20using%20xstack

  


  Vertically or horizontally stack (mosaic) several videos using ffmpeg ?

  


  My command is as follows :

  


  


  C :\ffmpeg\bin\ffmpeg.exe -i states_full.mp4 -i title.mp4 -i graphs.mp4" -filter_complex "[0:v] setpts=PTS-STARTPTS, scale=qvga [a0] ; [1:v] setpts=PTS-STARTPTS, scale=qvga [a1] ; [2:v] setpts=PTS-STARTPTS, scale=qvga [a2] ; [a0][a1][a2]xstack=inputs=3:layout=0_0|w0_0|w0_h0[out] " -map "[out]" -c:v libx264 -t '30' -f matroska output.mp4

  


  


  The command always errors out at the same spot, with the same error message :

  


  


  'w0_0' is not recognized as an internal or external command,
operable program or batch file.

  


  


  Some odd behavior is that even when I change the layout section to :

  


  layout=w0_0|0_0|w0_h0


  


  The error message is still on the middle '0_0' meaning it may be an error in formatting.

  


  This issue is very strange, as the vstack and hstack still work, only the xstack fails.