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• How to map ffmpeg formats to MIME types and file extensions ?

  17 mai 2017, par odigity

  Anyone know of a reference for mapping ffmpeg format values to MIME types and recommended file extension ? My google attempt failed to turn up anything.

  I did manually put together a small list with guess-work and clues from Wikipedia, IANA, and the Mozilla Developer Network for the subset of formats that I encountered in my video input test collection :

  ffmpeg Format             Extension  MIME Type
  
  ───────────────────────   ─────────  ────────────────────── 
  
  asf                       asf        application/vnd.ms-asf
  
  avi                       avi        video/x-msvideo
  
  flv                       flv        video/x-flv
  
  matroska,webm             webm       video/webm
  
  m4v                       m4v        video/x-m4v
  
  mov,mp4,m4a,3gp,3g2,mj2   mp4        video/mp4
  
  mpeg                      mpeg       video/mpeg
  
  mpegts                    mpeg       video/mpeg
  
  mpegvideo                 mpeg       video/mpeg
  
  ogg                       ogv        video/ogg
  
  matroska                  mkv        video/x-matroska
  
  webm                      webm       video/webm

  No idea if I’ve made the right calls, though.

  (The test files already have file extensions, but I’m operating on the assumption that the extension of a file a user uploads is irrelevant, and that the file should be renamed based on ffprobe and intelligent mapping...)

• What is the "Error initializing filter 'drawtext' with args..." error in using of ffmpeg at c# process class ?

  7 novembre 2016, par parsa

  I used this below code for create a resolution of a video and write text on it.

      var proc = new System.Diagnostics.Process();
  
      strin OrginalResolution="nhd";
  
      proc.EnableRaisingEvents = false;
  
      proc.StartInfo.FileName = ffmpegPath;
  
      proc.StartInfo.Arguments = "-i \"" + fileIn +
  
                                 "\" -f mp4 -s " + OrginalResolution + " -vf drawtext=fontfile=/OtherProjects/ConvertProj/ff‌​mpeg/OpenSans-Reg‌​ular.ttf:text=Parsa" \"" + fileOut.Split('.')[0] +
  
                                 ".mp4";
  
      proc.StartInfo.UseShellExecute = false;
  
      proc.StartInfo.CreateNoWindow = false;
  
      proc.StartInfo.RedirectStandardOutput = true;
  
      proc.StartInfo.RedirectStandardError = true;
  
  
  
      proc.Start();
  
      proc.WaitForExit();
  
      string sdsd = proc.StandardError.ReadToEnd();
  
      proc.Close();

  I faced with this problem(some string output of StandardError is in below) :

  Fontconfig error: Cannot load default config file\r\n[Parsed_drawtext_0       
  
  @0000000002fd8c20] Cannot find a valid font for the family 
  
  Sans\r\n[AVFilterGraph @ 0000000000511660] Error initializing 
  
  filter'drawtext' with args 
  
  'fontfile=/OtherProjects/ConvertProj/ffmpeg/OpenSans-
  
  Regular.ttf:text=parsa'\r\nError opening 
  
  filters!\r\n

  In cmd the same argument value of process works fine.
  I read that this issue related to how to using quotation mark at using
  of text property of drawtext in ffmpeg.but I can’t find any
  solution for solving this issue.
  Can anyone help me ?

  Can anyone help me still ?Is this a bug ?
  I used any solutions for escape from : in my code,but can’t solve this problem.
  It can’t find font.I delete other filters of drawtext to findout that any of filters don’t mistake, but still error exists yet.

  expansion=none property of drawtext doesn’t influence on this case, for escape :.

• Anybody has any idea how this site works ? www.ivipid.com [closed]

  14 décembre 2011, par Aamir Siddique

  I am a website developer (php) and i have been given a task to develop a similar website :

  http://ivipid.com/

  I need to make an identical website and i am trying to figure out how this can be done.

  Any ideas would be highly appreciated, please advice.

  Thanks !