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DVD Play back Question

Forum Storage : CD-ROM/DVD-ROM - DVD Play back Question

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Problem:
I am having problems playing DVD movies on my PC at work. The Video and/or sound are stuttering. Sometimes it is only for a few seconds every few minutes. However other times it is almost continues. The more programs running the worse the problem is. However even if I close everything down except the DVD player it still has problems. Also some DVD’s are worse than others. However Windows says there is more than 100Meg free in RAM. Any ideas why? Thanks in advance.


Hardware:
ADI ENCLOSE HD 3.5"/5.25" USB2.0
DVD+RW +R LITEON LDW-401S <----- In the above housing
System - HP Vectra
Processor - Pentium 3 900Mz
Ram - 256Meg
Video Card - Matrox 450
USB - <b>Only using a USB 1(or is is 1.1) connection</b>
Operating System - Win2k
HD - IBM-DTLA-307030 (Has more than 20 Gig Free)
DVD Software - CyberLink Power DVD


<P ID="edit"><FONT SIZE=-1><EM>Edited by blacklobo on 09/23/03 10:30 PM.</EM></FONT></P>

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The problem seems to be caused by the bottleneck in USB 1.1 external DVD drive. You didn't mention what version of PowerDVD you're using, but the latest <A HREF="http://www.gocyberlink.com/english/products/powerdvd/system_requirements.jsp" target="_new">version 5 requires USB 2.0 interface</A>.

Reply to elzt

Sorry using version 4

I also downloaded the trial version of WinDVD last night. However it still had the same problem.

Also I have a USB mouse and keyboard connected. But since I was watching a movie I wasn't using them.


So USB 1.1 doesn't even have enough band width to play a DVD?

Reply to blacklobo
- 0 +

You're right. Although theoretically USB1.1 can go as fast as 12Mbit/s (which is a bit faster than the max bit rate specified by DVD namely 9.8Mbit/s), no USB1.1 device can go that fast in reallity.

On the other hand, USB2.0 has a max transfer rate of 480Mbit/s which is more than enough for DVD playback.

Reply to elzt

So I just bought another USB 2.0 card for work. I didn't realize that DVD playback would need that high of a transfer rate.

Thanks a lot for the help.

Reply to blacklobo
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