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afterdawn.com > forums > digital video > video capturing from analog sources > ati all-in-wonder frame rate limit of 2.65 mb/sec
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ati all-in-wonder frame rate limit of 2.65 Mb/sec
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pcarroll
Newbie
_ 		18. December 2003 @ 16:05 _ Link to this message    Send private message to this user   
I have an AGP All-in-Wonder 128 Pro capture card and want to capture analog video. Every trick I have tried so far still can't get me past a 2.65 Mb/sec read bandwidth. Is there something I haven't tried. I have a 440BX chipset in a Celeron 1.4 GHz system, 256 Mb RAM, 30 and 40 Gig HD, latest BIOS and DirectX 9.0.
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Minion
AfterDawn Addict
_ 		18. December 2003 @ 23:51 _ Link to this message    Send private message to this user   
What is the "2.65MB/Sec Bandwidth"??? The Bandwidthth Of What?? Your AGP Slots Bandwidth? What???
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Praetor
Moderator
_ 		19. December 2003 @ 02:41 _ Link to this message    Send private message to this user   
Wowzers, if thats the limit on those older AGP ports, you're in big trouble hehe. If i'm not mistaken AGP1 = 266MB/s, AGP2 = 528MB/s and AGP4 = 1056MB/s and no surprise, AGP8 = 2112MB/s
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pcarroll
Newbie
_ 		19. December 2003 @ 03:21 _ Link to this message    Send private message to this user   
The ATI system compatibility check just calls this read bandwidth, but I think it is directly related to MPEG2 MB/sec captured, so that would make it AGP or some other bottleneck bandwidth. I capture with dropped frames and a slight pulsing screen when I use settings above 2.5 MB/sec in MPEG though lowering the resolution helps me get a bit more throughput. The captures look okay at 2.5 MB/sec and below, no pulsing or dropped frames but I was hoping to get better quality for the home video caputres.

Thanks

Paul
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Minion
AfterDawn Addict
_ 		19. December 2003 @ 11:27 _ Link to this message    Send private message to this user   
Well it sound like you Probably need a faster CPU so you can capture at a Higher bitrate and Resolution...You can Upgrade to a New Intel 2.5ghz and a New ECS Board with the new 8X AGP for $105 US, I just got 2 of them today...Cheers
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P-4 2.6ghz (Overclocked to 3.2ghz)
Abit IS7
1gb Dual Chanell DDR 400mhz
Zalman CNPS7000-CU Cooler(Modded with 50cfm Fan)
XFX Gforce 6600GT 128mb GDDR3 (500/1000)
Pinnacle DV500 ADVC Editing Card
RaidMax Scorpio ATX Case + 5 Led
pcarroll
Newbie
_ 		19. December 2003 @ 19:06 _ Link to this message    Send private message to this user   
Would using a USB 2.0 capture device improve capture rates? I'm thinking Dazzle, etc.
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msb5150
Member
_ 		19. December 2003 @ 19:13 _ Link to this message    Send private message to this user   
That depends, if the problem truly is with your agp bus, and not your cpu, then a usb capture device might very well work. However, if your cpu cannot handle the task, or maybe there is another bottleneck like the ram of the hard drive, then you may need to upgrade your pc, or abandon the effort and use vhs(something I really hate to say, but it always works)
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