User guide
Matrox Graphics Card – User Guide 23
4
Restart your computer.
Video
The following troubleshooting items address problems related to video files.
Problem Video file playback is jerky (skipping frames)
Cause
Your hard disk may be too slow.
Solution
Try
defragmenting
your hard disk.
Windows 95/98 –
To defragment a hard disk, click
Æ
Programs
Æ
Accessories
Æ
System Tools
Æ
Disk Defragmenter
.
Solution
If possible, try playing back video files from a faster disk. If your computer has more than
one hard disk, you may get better results if you play back video files from a disk
other than
the one where the Windows swap file is stored. The Windows swap file is usually stored on
drive “
C:
”.
Solution
Make sure your hard disk is using DMA (if your hard disk supports DMA transfers), then try
recapturing and playing back video files. To use DMA:
Windows 95/98 –
1
Right-click the
My Computer
icon on your Windows desktop background, then click
Properties
Æ
Device Manager
.
2
Double-click the
Disk drives
list item to expand it, then double-click the name of the
hard disk you’re using.
3
Click
Settings
, then enable the
DMA
check box.
4
Click
OK
Æ
OK
Æ
Yes
to restart your computer and for changes to take effect.
Windows NT 4.0 –
Install a DMA driver. For most computers, a DMA driver is available for
Windows NT 4.0 (for example, the “PIIX Bus Master IDE” driver supports many
computers). For more information on how to get this driver, contact your system vendor.
Note:
If you identify a program that doesn’t work well with Matrox acceleration, please
contact Matrox technical support (see page 43) and describe the problem. This information
may help us come up with a fix or work-around in a future driver release.
9x9x
Note:
Not all hard disks support DMA well. For more information, see the documentation
that came with your hard disk.
9x9x
NTNT