@jetdv Thank you, Sir.

And, if a create a button, and when I click on it, it will open the properties window with the general tab selected. Is that allowed via script or custom command?
 

No. There is no option to open the 'Properties' dialog - let alone select which tab is selected.

@jetdv Understood, Sir. One more information was learned today. Thank you.

@jetdv Hello, Sir. Please, if possible;

If I select a video event, and need to be displayed its FPS and bit rate information, Which lines of code for FPS and bit rate should I write? 

@jetdv I found a solution;

For Frame Rate I used this;

string fps = videoStream.FrameRate.ToString();

For Bit Rate I used this;

private string GetBitrateInMbps(string filePath)
        {
            try
            {
                if (File.Exists(filePath))
                {
                    FileInfo fileInfo = new FileInfo(filePath);
                    double fileSizeInBits = fileInfo.Length * 8.0; // File size in bits

                    // Find media in MediaPool by matching file path
                    Media media = null;
                    foreach (Media m in myVegas.Project.MediaPool)
                    {
                        if (m.FilePath.Equals(filePath, StringComparison.OrdinalIgnoreCase))
                        {
                            media = m;
                            break;
                        }
                    }

                    // If media is found, calculate bitrate
                    if (media != null)
                    {
                        Timecode duration = media.Length;
                        double durationInSeconds = duration.ToMilliseconds() / 1000.0;

                        if (durationInSeconds > 0)
                        {
                            double bitrateInMbps = (fileSizeInBits / durationInSeconds) / 1000000.0;
                            return bitrateInMbps.ToString("F2"); // Format to 2 decimal places
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                // Optionally log the exception or display it for debugging
                MessageBox.Show($"Error calculating bitrate: {ex.Message}");
            }
            return null;
        }

            foreach(Track myTrack in myVegas.Project.Tracks)
            {
                foreach(TrackEvent evnt in myTrack.Events)
                {
                    if (evnt.Selected && evnt.IsVideo())
                    {
                        Media media = evnt.ActiveTake.Media;
                        VideoStream vs = media.GetVideoStreamByIndex(0);

                        string s = evnt.ActiveTake.MediaPath + Environment.NewLine;
                        s += "  Alpha Channel: " + vs.AlphaChannel + Environment.NewLine;
                        s += "  Average Data Rate: " + vs.AverageDataRate + Environment.NewLine;
                        s += "  Color Depth: " + vs.ColorDepth + Environment.NewLine;
                        s += "  Field Order: " + vs.FieldOrder + Environment.NewLine;
                        s += "  Framerate: " + vs.FrameRate + Environment.NewLine;
                        s += "  PAR: " + vs.PixelAspectRatio + Environment.NewLine;
                        s += "  Rotation: " + vs.Rotation + Environment.NewLine;
                        s += "  Stream Info: " + vs.StreamInfoText + Environment.NewLine;

                        MessageBox.Show(s);
                    }
                }
            }