upgrading and repairing PCs technicians ... - 400 Bad Request
upgrading and repairing PCs technicians ... - 400 Bad Request
upgrading and repairing PCs technicians ... - 400 Bad Request
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Troubleshooting Video Capture Devices 257<br />
Table 10.23 Multimedia Device Comparison Continued<br />
Device Type Pros Cons<br />
Parallel-port Universal use on desktop Frame rate limited by speed<br />
attachment or notebook computer;<br />
inexpensive.<br />
of port.<br />
USB-port Easy installation on late-model, Might not work on Windows<br />
attachment USB-equipped computers 95B OSR 2.x with USB;<br />
with Windows 98/Me/2000. requires active USB port.<br />
Dedicated ISA or Fast frame rate for realistic High resource requirements<br />
PCI interface card video; doesn’t require (IRQ <strong>and</strong> so on) on some<br />
disconnecting parallel models; ISA nearly obsolete;<br />
printer; works with any<br />
graphics card.<br />
requires internal installation.<br />
IEEE-1394 No conversion from analog Requires IEEE-1394 interface<br />
(FireWire, iLINK) to digital needed; all-digital card <strong>and</strong> IEEE-1394 digital<br />
connection to image is very high quality video source; new <strong>and</strong><br />
digital video without compression artifacts expensive; card requires<br />
(blocky areas) in video; fast<br />
throughput.<br />
internal installation.<br />
Troubleshooting Video Capture<br />
Devices<br />
Table 10.24 provides some advice for troubleshooting problems<br />
with video capture devices.<br />
Table 10.24 Troubleshooting Video Capture Devices<br />
Device Type Problem Solution<br />
Parallel-port Can’t detect device, Check port settings; device might<br />
attachment but printers work require IEEE-1284 settings (EPP <strong>and</strong><br />
okay. ECP); change in BIOS; make sure<br />
device is connected directly to port;<br />
avoid daisy-chaining devices unless<br />
device specifically allows it; check<br />
Windows 9x Device Manager for IRQ<br />
conflicts.<br />
TV tuners (built-in No picture. Check cabling; set signal source<br />
graphics card or<br />
add-on)<br />
correctly in software.<br />
All devices Video capture is Frame rate is too low; increasing it<br />
jerky. might require capturing video in a<br />
smaller window; use fastest parallelport<br />
setting you can.<br />
Video playback has Hard disk might be pausing for thermal<br />
pauses, dropped recalibration; use AV-rated SCSI hard<br />
frames. drives or new UDMA EIDE drives; install<br />
correct bus-mastering EIDE drivers for<br />
motherboard chipset to speed things up.
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