Recherche avancée

Sur d’autres sites (9621)

• Hello i need a some istructions to use ffmpeg, I would like a code to get media file info

  16 juillet 2014, par user3547175

  I want to start by saying that i don’t know how to use FFMPEG in C#. I have a program that reads the information of a media file, I use this code about resolution, bitrate

  var player = new WindowsMediaPlayer();
  
  var clip = player.newMedia(file.FullName);
  
  lblLenght_.Text = (TimeSpan.FromSeconds(clip.duration)).ToString();       
  
  
  
  
  
  
  
  ShellFile shellFile = ShellFile.FromFilePath(file.FullName);
  
  lblFPS_.Text = (shellFile.Properties.System.Video.FrameRate.Value / 1000).ToString();
  
  
  
  lblHeight_.Text = shellFile.Properties.System.Video.FrameHeight.Value.ToString() + " px";
  
  lblWidth_.Text = shellFile.Properties.System.Video.FrameWidth.Value.ToString() + " px";
  
  lblResolution_.Text = shellFile.Properties.System.Video.FrameWidth.Value.ToString() + "x" + shellFile.Properties.System.Video.FrameHeight.Value.ToString() + " px";
  
  blBitrate_.Text = (shellFile.Properties.System.Video.TotalBitrate.Value / 1000).ToString() + " kb/s";

  but the problem is that ShellFile supports only a few formats, so I found some FFMPEG uses but I don’t know how to work with it. Can someone post the solution or some link to learn how to use it about my problem ?

• How to get info of undecoded video frames from bit/packet-loss degraded video in ffmpeg

  9 janvier 2014, par TomiL

  I am using ffprobe to get information regarding decoded video frames :

  ffprobe -i  -show_frames -select_streams v > output_file.txt

  but this way I can only see info of successfully decoded frames from the multimedia container.

  I run some kind of packet loss simulation, so I need to extract "frame time position", "frame type", etc. of un-decoded, e.g. degraded frames from the multimedia container, ie. mpeg-4 transport stream. I get some messages to standard error output, which are hard to understand (and there are no specific information whatsoever !), so I am looking for output more like that, made from -show_frames argument.

  Is there any facility capable of this, e.g. version, ffmpeg module or even some other software with appropriate video decoding software, i.e. H.264 compliant, which can extract frame header information and predicted frame type from the multimedia container ?

• Couldn't find platform family in Info.plist for dylib CFBundleSupported platforms or Mach-O LC_VERSION_MIN

  1er décembre 2016, par user2331687

  

  I have developed a App (Mac OS) and I want release it to Mac App Store, and my App use the FFMPEG library, so there are many .dylib (as you can see, for example, libSDL-1.2.0.dylib), when I upload my App, and I got this error, I have googled several days, but I don’t know how to add the "platform family" to a .dylib, since the dylib is build from command line. Can anyone help me to solve this problem, thanks very much !