how to improve video quality?

[GeorgeTwo]

Hello everyone,

I am using the following code snippets to record screen, and in most situations recorded wmv file is clear enough, but for some part of video it is not very clear (grey color for some parts). What I record is ppt with full screen mode. I am using Windows Media Encoder 9.

Here is my code snippet,


IWMEncSourceGroup SrcGrp;
IWMEncSourceGroupCollection SrcGrpColl;
SrcGrpColl = encoder.SourceGroupCollection;
SrcGrp = (IWMEncSourceGroup)SrcGrpColl.Add("SG_1");

IWMEncVideoSource2 SrcVid;
IWMEncSource SrcAud;
SrcVid = (IWMEncVideoSource2)SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_VIDEO);
SrcAud = SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);

SrcVid.SetInput("ScreenCap://ScreenCapture1", "", "");
SrcAud.SetInput("Device://Default_Audio_Device", "", "");

// Specify a file object in which to save encoded content.
IWMEncFile File = encoder.File;
string CurrentFileName = Guid.NewGuid().ToString();
File.LocalFileName = CurrentFileName;
CurrentFileName = File.LocalFileName;

// Choose a profile from the collection.
IWMEncProfileCollection ProColl = encoder.ProfileCollection;
IWMEncProfile Pro;
for (int i = 0; i < ProColl.Count; i++)
{
Pro = ProColl.Item(i);

if (Pro.Name == "Screen Video/Audio High (CBR)")
{
SrcGrp.set_Profile(Pro);
break;
}
}
encoder.Start();


thanks in advance,
George

[foxyshadis]

Do you mean that the whites aren't white enough and the blacks aren't black enough (ie, low contrast)? If so, this isn't an encoding problem, it's a playing problem. Different players have different workarounds, but if you can find the 'overlay' mode or turn off video acceleration, you can almost always see the full range of contrast. In VMR and EVR modes, it's dependent on the video card & driver used, driver settings, and player configuration. Things have changed for the better in recent years, make sure your video driver is up-to-date.