Getting length of video

by

Here is an example:

using DirectShowLib;
using DirectShowLib.DES;
using System.Runtime.InteropServices;

...

var mediaDet = (IMediaDet)new MediaDet();
DsError.ThrowExceptionForHR(mediaDet.put_Filename(FileName));

// find the video stream in the file
int index;
var type = Guid.Empty;
for (index = 0; index < 1000 && type != MediaType.Video; index++)
{
    mediaDet.put_CurrentStream(index);
    mediaDet.get_StreamType(out type);
}

// retrieve some measurements from the video
double frameRate;
mediaDet.get_FrameRate(out frameRate);

var mediaType = new AMMediaType();
mediaDet.get_StreamMediaType(mediaType);
var videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));
DsUtils.FreeAMMediaType(mediaType);
var width = videoInfo.BmiHeader.Width;
var height = videoInfo.BmiHeader.Height;

double mediaLength;
mediaDet.get_StreamLength(out mediaLength);
var frameCount = (int)(frameRate * mediaLength);
var duration = frameCount / frameRate;

More Related Contents:

  1. Solid FFmpeg wrapper for C#/.NET
  2. Using FFmpeg in .net?
  3. Image sequence to video stream?
  4. How to get video duration from mp4, wmv, flv, mov videos
  5. Working way to make video from images in C#
  6. How to get video duration, dimension and size in PHP?
  7. How can I stream webcam video with C#? [closed]
  8. An attempt was made to access a socket in a way forbidden by its access permissions. Why?
  9. How to capture screen to be video using C# .Net?
  10. Anyone know of a set of C# bindings for FFMPEG? [closed]
  11. Record Video of Screen using .NET technologies [closed]
  12. How can I capture the screen to be video using C# .NET?
  13. Record a video of the screen using .NET technologies [closed]
  14. Play 360 Stereoscopic video with VideoPlayer
  15. How to use pipe in ffmpeg within c#
  16. Detect if deserialized object is missing a field with the JsonConvert class in Json.NET
  17. Line delimited json serializing and de-serializing
  18. Reading Datetime value From Excel sheet
  19. How do foreach loops work in C#? [closed]
  20. Hide TabControl buttons to manage stacked Panel controls
  21. Regex to get NUMBER only from String
  22. Implementing Hoey Shamos algorithm with C#
  23. Why is there a difference in checking null against a value in VB.NET and C#?
  24. How to detect mouse clicks?
  25. Can’t create huge arrays
  26. Setup Entity Framework For Dynamic Connection String
  27. How to check if the system audio is muted?
  28. C# Regex to match the word with dot
  29. Why do both the abstract class and interface exist in C#?
  30. Is it a good way of unit testing to use another, tested function to make preparations for the actual test?

Leave a Comment