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• ffmpeg image extraction code not working

  16 mai 2016, par sonam Sharma

  I am using ffmpeg to extract an image out of a video while uploading
  I am using this code for the purpose

   exec('ffmpeg  -i '.$uploadfile.' -ss 00:00:05 -vframes 1  '.$new_image_path);

  But the issue is that sometimes it extractes the image and sometimes it simply dosent

  I have a dedicated server which has already ffmpeg installed there and I just pushed the vendor folder from my local computer to the server by ftp.

  require 'vendor/autoload.php';

  What may be the issue here ?

• How to create thumbnail about torrent without downloading video files ? [on hold]

  1er septembre 2019, par tty78

  Most of time, torrent sites like RARBG/The Pirate Bay/KickAss would return many query results even through I have typed in many detailed keywords, which is not strange because there are many people upload it.

  So, when i want to watch/download a torrent movie, it’s better to check the video first to find out that :

  • is it a fake video
  • is the video watermarked
  • is there some AD in the video
  • is it 1980*1080 or 640*480 ??

  What i want to do is creating thumbnail of the videos without download them, so that i can save a lot of broadband, disk space and time.

  Now I can create thumbnail with a python tool - vcsi, but it depends on the video file stored in disk.
  In fact, vcsi get meta information with ffprobe and create thumbnail using ffmpeg.

  def probe_media(self, path):
  
      """Probe video file using ffprobe
  
      """
  
      ffprobe_command = [
  
          "ffprobe",
  
          "-v", "quiet",
  
          "-print_format", "json",
  
          "-show_format",
  
          "-show_streams",
  
          path
  
      ]
  
  
  
      try:
  
          output = subprocess.check_output(ffprobe_command)
  
          self.ffprobe_dict = json.loads(output.decode("utf-8"))
  
      except FileNotFoundError:
  
          error = "Could not find 'ffprobe' executable. Please make sure ffmpeg/ffprobe is installed and is in your PATH."
  
          error_exit(error)

  ffmpeg_command = [
  
          "ffmpeg",
  
          "-ss", skip_time,
  
          "-i", self.path,
  
          "-ss", skip_delay,
  
          "-vframes", "1",
  
          "-s", "%sx%s" % (width, height),
  
      ]

  WebTorrent may be a solution but it’s not good because I have a lot of torrent file to scan.
  I want to create thumbnail on a ubuntu VPS because it can run day and night, and i can post thumbnail under the torrent comments.
  Some key frame, resolution and duration are enough, maybe.
  

• Getting an error in simple code with opening the file

  10 mars 2016, par Dmitry

  Here is code example :

  char* audio1Path = "in1.sdp";
  
  if (open_input_file(audio1Path, &input_format_context_0/*it`s null*/, &input_codec_context_0/*it`s null*/) < 0)
  
  {
  
      av_log(NULL, AV_LOG_ERROR, "Error while opening file 1\n");
  
      exit(1);
  
  }

  in1.sdp is in folder where exe file is. What`s wrong ?