Video for Windows 1.1--Automatic Window Shift Problem (118390)


The information in this article applies to:

  • Microsoft Platform Software Development Kit (SDK) 1.0, when used with:
    • Microsoft Windows 3.1
    • Microsoft Windows 3.11
    • Microsoft Windows NT Server 4.0
    • Microsoft Windows NT Workstation 4.0
This article was previously published under Q118390
3.10 4.00 WINDOWS kbmm kbprg
When a video playback window is created using MCI, the Video for Windows (VfW) system software may shift the window a small distance vertically or horizontally from the original location.

The video software does this to align the window on even-byte boundaries in video memory for optimal playback speed. When the window is located on a byte boundary, the video software is not required to perform bit-intensive calculations during video playback, increasing the playback speed.

This behavior is particular to Video for Windows and cannot be controlled by the application being affected.
Modification Type:MinorLast Reviewed:7/11/2005
Keywords:KB118390
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