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• lavfi : add attribute_align_arg to all public entry points

  26 juillet 2013, par Hendrik Leppkes

  lavfi : add attribute_align_arg to all public entry points
  Previously it was partly only added to central functions called
  
  internally, however if GCC would inline these into the public fuction, the
  
  alignment attribute would not take effect.
  Instead, add it to all public entry points to avoid these problems.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavfilter/buffersink.c
  • [DBH] libavfilter/buffersrc.c

• Unable to send image to ffmpeg stdin from QProcess

  4 décembre 2019, par Go0od

  It not writing png file. I want to save central widget to png file. I have 2 files, one is main file and second one is ui file. Link has ui file.

  Getting error code :

  QWindowsPipeWriter::write failed. (The handle is invalid.)

  main.py

  import sys
  
  from PyQt5.QtWidgets import QWidget
  
  from PyQt5 import QtCore, QtGui, QtWidgets
  
  from green import Ui_MainWindow
  
  class MyWindow(QtWidgets.QMainWindow, Ui_MainWindow, QWidget):
  
     def __init__(self):
  
      QtWidgets.QMainWindow.__init__(self)
  
      Ui_MainWindow.__init__(self)
  
  
  
      self.setupUi(self)
  
      self.widger_screen()
  
  
  
  def widger_screen(self):
  
  
  
      self.process = QtCore.QProcess(app)
  
      self.process.setProcessChannelMode(self.process.ForwardedChannels)
  
      self.process.setOpenMode(self.process.WriteOnly)
  
      self.process.start('ffmpeg',
  
                         ['-y',
  
                          '-analyzeduration', '1000',
  
                          '-vcodec', 'png', '-i', '-',
  
                          '-vcodec', 'mpeg4',
  
                          '-qscale', '5', '-r', '24', 'video.avi',
  
                          "-loglevel", "debug"])
  
      for i in range(100):
  
          QWidget.grab(self.centralwidget).save(self.process, "PNG")
  
  
  
  if __name__ == '__main__':
  
  app = QtWidgets.QApplication(sys.argv)
  
  window = MyWindow()
  
  window.show()
  
  sys.exit(app.exec_())

  green.ui
  https://paste.pythondiscord.com/ugorifokiq.py

• How to create video file using fs from react form ?

  7 avril 2021, par Kirasiris

  I'm developing a section in which I need to create a video from a form that I'm using in a React application ; the returned data that I get from said file is this :

  


  File >
   lastModified: 1617759553928
   lastModifiedDate: Tue Apr 06 2021 20:39:13 GMT-0500 (Central Daylight Time) {}
   name: "Shinobi Sisters.mp4"
   path: "Shinobi Sisters.mp4"
   size: 2564227
   type: "video/mp4"
   webkitRelativePath: ""
   __proto__: File


  


  I'm sending all of that to a function called createDirectoryAndFile(path, file), which so far looks like this :

  


  // CREATE VIDEO FILE
const dir = './temp';
const createDirectoryAndFile = async (inputPath, inputContent) => {
  if (!fs.existsSync(dir)) {
    fs.mkdir(dir, { recursive: true });
  }

  fs.writeFile(inputPath, inputContent, (err) => {
    if (err) {
      console.error('An error ocurred', err);
    } else {
      console.log('Your file has been made');
    }
  });
};


  


  It gets to the point in which is able to create the 'temp' directory but fails to place the video within it. Is there a reason for this ?

  


  I need this because this is the starting point for me to work in my application. I'm trying to upload a video, create a second copy of it with a watermark(thanks to ffmpeg and ffprobe) and then finally upload it to AWS S3.

  


  From my understanding all of that is only possible if the video is actually exists(not in memory).

  


  Do you have guys have any idea ? Yes, I already installed ffmpeg and ffprobe