C # Get video file playback length

The following two methods support only partial video format, general format mp3,wma, etc.

1. Using Shell32

Add Reference, select Microsoft Shell Controls and Automation Reference in COM

        <summary>//Length minutes (support mp4?)        </summary>//<param name= "path" ></param>//<returns></returns> public static string Getmediatimelenminute (string path) {try {Shell32.shell                Shell = new Shell32.shell (); File path Shell32.folder Folder = Shell. NameSpace (path. Substring (0, path.                LastIndexOf ("\ \"))); File name Shell32.folderitem FolderItem = folder. ParseName (path. Substring (path.                LastIndexOf ("\ \") + 1); if (Environment.OSVersion.Version.Major >= 6) {String medialength = folder.                    Getdetailsof (FolderItem, 27);                return medialength; } else {String medialength = folder.                    Getdetailsof (FolderItem, 21);                return medialength;     }       } catch (Exception ex) {return null;}        }///<summary>//Length seconds (support mp4?)        </summary>//<param name= "path" ></param>//<returns></returns> public static int Getmediatimelensecond (string path) {try {Shell32.shell she                ll = new Shell32.shell (); File path Shell32.folder Folder = Shell. NameSpace (path. Substring (0, path.                LastIndexOf ("\ \"))); File name Shell32.folderitem FolderItem = folder. ParseName (path. Substring (path.                LastIndexOf ("\ \") + 1);                String Len; if (Environment.OSVersion.Version.Major >= 6) {len = folder.                Getdetailsof (FolderItem, 27); } else {len = folder.                Getdetailsof (FolderItem, 21); } string[] str = len.                Split (new char[] {': '});                int sum = 0; sum = Int. Parse (str[0]) * * + int. Parse (str[1]) * + int.                Parse (str[2]);            return sum;        } catch (Exception ex) {return 0;} }

　　

1. Using DirectShowLib.dll

You can search for directshowlib in NuGet to add references

    public static string Getmediatimelen (string path) {var mediadet = (imediadet) new Mediadet ();        DSERROR.THROWEXCEPTIONFORHR (path);//Find the video stream in the Fileint index;        var type = Guid.Empty; for (int index = 0; index < + && type! = Mediatype.video; index++) {mediadet.put_currents            Tream (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;//This is the video length, unit seconds mediadet.get_streamlength (out medialength);     var framecount = (int) (framerate * medialength);        var duration = Framecount/framerate;    Return ""; }

　　

C # Get video file playback length