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Hi Qasem,
I found that the size of output from RasterImageFormat.Jpeg(using video callback filter) & StillFormat_JPEG444 (using playback Ctrl) are not the same. Can you advise?
Video CallBack Filter
RasterViewPerspective viewPerspective;
try
{
if (!Session.captureMode || inCapturingStillImage)
{
return;
}
if (bTopDown == 1)
viewPerspective = RasterViewPerspective.TopLeft;
else
viewPerspective = RasterViewPerspective.BottomLeft;
image = new RasterImage(
RasterMemoryFlags.User,
lWidth,
lHeight,
lBitCount,
RasterByteOrder.Bgr,
viewPerspective,
null,
IntPtr.Zero,
0);
image.SetUserData(new IntPtr(pData), lSize);
codecs = new RasterCodecs();
codecs.Save(image.Clone(), "abc.jpg", RasterImageFormat.Jpeg, 24);
inCapturingStillImage = false;
}
catch(System.Exception ex)
{
throw new Exception(ex.Message);
}
System.Windows.Forms.Application.DoEvents();
}
Playback Control
axltmmPlayCtrl.SaveStillBitmap("abc.jpg", (int)LTMMLib.ltmmPlay_StillFormat.ltmmPlay_StillFormat_JPEG444, 2, 0, 1000);
The output file from video capture are follows:
640*480, 150*150 dpi, 24 bits = 218 KB
The output file from playback ctrl are follows:
640*480, 96*96 dpi, 24 bits = 304KB
How can get the same quality and size from two methods?
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