Newest 'ffmpeg' Questions - Stack Overflow

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• need a solution to Convert Images to Video in C# (except ffmpeg) [on hold]

  13 octobre 2013, par Sam35

  I'm using set of captured images to convert it as a video using C#.I need a good C# library to do it.

  Simply i can use the ffmpeg.But Because of the GPL License issue,i couldn't use it.

  I need a good free library with a good compression mechanismn (Not with GPL Licenses).

  Please anybody suggest a solution for this.

  thanks.

• Header for F_NOCACHE in Linux

  12 octobre 2013, par artaxerxe

  I got FFMpeg repository on my Ubuntu machine, installed it and imported in Eclipse as a project. Anyway, at compile time (the FFMpeg project from eclipse) I get this error:

  ’F_NOCACHE’ undeclared (first use in this function)

  This error is coming from this code line:

  fcntl(fd[i], F_NOCACHE, 1);
  

  both headers for fcntl are included, according to man pages. Can anyone tell me why I get this error and how to solve it? It seems to me that F_NOCACHE is related only to BSD systems.

  Thanks in advance!

• FFMPEG scaling, how to set scale so width AND height don't exceed a certain amount ?

  12 octobre 2013, par Darius

  I have 2 videos, one is 500 pixels by 100 pixels (just an example, like something recorded sideways on an iphone). And a 1980 x 400 pixels videos. I need the video to convert maintaining aspect ratios. I know of the -vf scale filter such as -vf scale=-1:320, but that only takes the width and scales the height accordingly. My 500 x 100 video would be 320px wide and 1600 pixels tall. That's bad, I need it to be max 500 pixels tall and max width of 320 (just example sizes).

  How would I configure the -vf scale function to do that?

  Using latest ffmpeg 0.11

  Recap: scale any video to max 500 height : 320 width while keeping aspect ratio

• show tracked object in Video using OpenGL

  12 octobre 2013, par user1958219

  I am extending an existing OpenGL project with new functionality.

  I can play a video stream using OpenGL with FFMPEG. Some objects are moving in the video stream. Co-ordinates of those objects are know to me.

  I need to show tracking of motion for that object, like continuously drawing a point or rectangle around the object as it moves on the screen.

  Any idea how to start with it?

• Read DVD Metadata e.g chapters duration and titles using c# or other language

  11 octobre 2013, par user2658536

  I need investigate a DVD structure Using code for example c# or ffmpeg. I need information about the number of chapters in DVD(duration of each chapter,titles and VOB related)

  searching in google I found this http://www.codeguru.com/cpp/controls/controls/lists,treesandcombos/article.php/c12025/DVD-Explorer.htm

  This seems like exactly what I need and the exe is working, but the solution seems to be very old and I cant execute it in VS2010 and progrematically extract data.

  Is there any simple way to analyze the IFO file within the DVD using C# or something like that? or some software that run from cmd and output the answers.

  thanks