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• get difference bewteen two process of same name running

  5 octobre 2015, par TOM

  I am writing a application like a process explorer. I run more than 2 ffmpeg process. There is one difference between same name - Process id. How can I found more difference between 2 or more ffmpeg process running in the taskbar in vb.net ?

  For Each prog As Process In Process.GetProcesses
  
    If prog.ProcessName = "ffmpeg" Then
  
       al.Add(prog.ProcessName)
  
    End If
  
  Next
  
  For Each i In al
  
     ListBox1.Items.Add(i)
  
  Next i

• Microsoft SmoothStreaming video on Apache ?

  2 juin 2014, par earizon

  I created what I consider to be a valid smooth streaming output using ffmpeg with the smooth streaming muxer and also alternatively through the ismindex utility (included in ffmpeg sources).

  I’m trying to use an standard web server like Apache instead of IIS and its S.S. extensions. The output is segmented content (each fragment is split to is own file) so theoretically this is possible. Now comes my first problem where I’m stuck.

  How can I test the result using for example a Window Phone 8 ?. I tried to open the index.ism url from I.Explorer, but the extension ism and the mime-type (application/vnd.ms-sstr+xml) is not recognized and I.Explorer just dump the xml instead of opening the media player.
  I was waiting for a similar behaviour to that of Android/iOS when the (HLS) index.m3u8 URL is clicked. In this case the browser/OS detects the extension and open the player.

  Thanks in advance for any help, hint or link !

• Corrupted h264 mp4 using libav [on hold]

  16 juin 2014, par ArK22

  I´m compressing and muxing a video using libav, compiled with libx264 support. For this i´ve written a c++ .dll, to which i feed frames regularly :).

  Codec : h264
  Container : mp4

  Everything goes smooth, and the video gets played by VLC with no problem. But that’s it, no other video player can play it. Quicktime shows a black screen, MediaPlayer crashes, and the video itself has no thumbnail in finder (Mac) or explorer (PC). Reencoding the video using ffmpeg, works nicely and fixes this. However, i would like to know what’s wrong.

  My problem is exactly the same as the one described here.

  Comparing the two videos (before and after fixing with ffmpeg) using MediaInfo yields identical results, apart from compression settings, which vary a little bit. Both are baseline 3.1 profile, ftyp is isom, same bitrate, same duration, same fps, same everything.

  Has anyone stumbled upon similar problems using libav ? Tomorrow i´ll post my code to make things clearer, but in the meanwhile any suggestions are welcome.

  thanks !