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• How to cut online video using ffmpeg c api ? [on hold]

  27 novembre 2017, par blueblue

  I am new to ffmpeg.I have tried this answer How to cut video with FFmpeg C API But I didn’t get it ,can anyone help ?

• How to get a online video's duration without downloading the full video ?

  8 février 2017, par David Zhuang

  To get a video’s duration and resolution, I’ve got this function :

  def getvideosize(url, verbose=False):
  
  try:
  
      if url.startswith('http:') or url.startswith('https:'):
  
          ffprobe_command = ['ffprobe', '-icy', '0', '-loglevel', 'repeat+warning' if verbose else 'repeat+error', '-print_format', 'json', '-select_streams', 'v', '-show_streams', '-timeout', '60000000', '-user-agent', BILIGRAB_UA, url]
  
      else:
  
          ffprobe_command = ['ffprobe', '-loglevel', 'repeat+warning' if verbose else 'repeat+error', '-print_format', 'json', '-select_streams', 'v', '-show_streams', url]
  
      logcommand(ffprobe_command)
  
      ffprobe_process = subprocess.Popen(ffprobe_command, stdout=subprocess.PIPE)
  
      try:
  
          ffprobe_output = json.loads(ffprobe_process.communicate()[0].decode('utf-8', 'replace'))
  
      except KeyboardInterrupt:
  
          logging.warning('Cancelling getting video size, press Ctrl-C again to terminate.')
  
          ffprobe_process.terminate()
  
          return 0, 0
  
      width, height, widthxheight, duration = 0, 0, 0, 0
  
      for stream in dict.get(ffprobe_output, 'streams') or []:
  
          if dict.get(stream, 'duration') > duration:
  
              duration = dict.get(stream, 'duration')
  
          if dict.get(stream, 'width')*dict.get(stream, 'height') > widthxheight:
  
              width, height = dict.get(stream, 'width'), dict.get(stream, 'height')
  
      if duration == 0:
  
          duration = 1800
  
      return [[int(width), int(height)], int(float(duration))+1]
  
  except Exception as e:
  
      logorraise(e)
  
      return [[0, 0], 0]

  But some online videos comes without duration tag. Can we do something to get its duration ?

• what's the recommended CDN or Hosting should I use for online media converter app ? [on hold]

  20 novembre 2017, par Moe D.

  I’m working on web application that will let users download videos from facebook, twitter and vimeo as MP4 or MP3.

  I don’t know what’s the recommended CDN or Hosting plan or product I should use to can host all these big media files ( mp3 and mp4 ) with a lot of download requests per hour and to be affordable in the same time ?

  And will auto deleting files that older than 6 hours on the cloud save some cloud storage costs ?