Compression Property (original) (raw)

Summary

This property is updated with the video compression of the video format.

Syntax

public int Compression { get; } 

public: property int Compression { int get(); }

Property Value

A value that represents the video compression of the video format.

Example

using Leadtools; using Leadtools.Multimedia; using LeadtoolsMultimediaExamples.Fixtures; public CaptureCtrlForm _form = new CaptureCtrlForm(); public bool _result = false; public void VideoFormatExample() { // reference the capture control CaptureCtrl capturectrl = _form.CaptureCtrl; int count, compression = 0, bits = 0, width = 0, height = 0; int found, selected = -1; // set a video device, use the name of your device here if (capturectrl.VideoDevices["USB"] != null) capturectrl.VideoDevices["USB"].Selected = true; // reference the videoformats property VideoFormats videoformats = capturectrl.VideoCaptureFormats; try { // get count of available video formats count = videoformats.Count; // enumerate formats and select one foreach (VideoFormat vf in videoformats) { // get the properties bits = vf.BitCount; compression = vf.Compression; width = vf.Width; height = vf.Height; // select the format if it matches some criteria if (bits == 16 && width == 640 && height == 480) { vf.Selected = true; break; } } // get the currently selected format selected = videoformats.Selection; string videoFormatSubTypeFriendlyName = videoformats[selected].SubTypeFriendlyName; _form.Text = videoFormatSubTypeFriendlyName; // find a format based on subtype name, width and height (YUY2 320 x 240 video) found = videoformats.IndexOf(videoformats[selected].SubTypeName, 320, 240); // our found format is not selected, so select it if (found != selected) videoformats.Selection = found; // get the new selected format selected = videoformats.Selection; // set our result based on what we expect _result = (count > 0 && selected == found); } catch (Exception) { _result = false; } }