Matrox Graphics Card – User Guide
35
Video
The following troubleshooting items address problems related to video files.
Problem
Video file playback is jerky (skipping frames)
1
Cause
Your hard disk may be too slow.
1
Solution
Try defragmenting your hard disk.
Windows 95/98/2000 – To defragment a hard disk, click
"
Programs
"
Accessories
"
System Tools
"
Disk Defragmenter
.
2
Solution
If possible, try using a faster disk.
3
Solution
Make sure the drive you’re using (a hard disk drive or DVD drive) is using DMA (if your
drive supports DMA transfers). To use DMA:
Windows 95/98 –
1
Right-click the
My Computer
icon on your Windows desktop background, then click
Properties
"
Device Manager
.
2
Double-click the
Disk drives
list item to expand it, then double-click the name of the
drive device you’re using.
3
Click
Settings
, then enable the
DMA
check box.
4
Click
OK
"
OK
"
Yes
to restart your computer and for changes to take effect.
Note:
Jerky video file playback may be the result of slow playback or recording. Slow
recording causes frames to be dropped (frames aren’t recorded). If jerky video is caused by
frames that were dropped during recording, the problem can only be fixed by recapturing the
video under better conditions.
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Tip:
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:”.
WARNING:
Not all drives support DMA well. For more information, see the
documentation that came with your hard disk.
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