I should point out that I do NOT have a high speed USB connector on my computer. Is that my problem? Is my drive not taking in the capture quickly enough?
I have ordered a 4-port high speed USB connector. Will that solve it?
every 40 seconds error
Moderator: Ken Berry
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Peeay
every 40 seconds error
I installed a USB-connected external hard drive. I installed VS8 upgrade on drive C. I captured a video. Every 38 to 40 seconds I got an error message: "unexpected error". The capture stopped and I had to start it again. This happened about six times in a row and it was very regular in its 40-second frequency.
I should point out that I do NOT have a high speed USB connector on my computer. Is that my problem? Is my drive not taking in the capture quickly enough?
I have ordered a 4-port high speed USB connector. Will that solve it?
I should point out that I do NOT have a high speed USB connector on my computer. Is that my problem? Is my drive not taking in the capture quickly enough?
I have ordered a 4-port high speed USB connector. Will that solve it?
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THoff
If you have a USB 1.1 port, then the peak throughput is 12Mbps. That's the absolute maximum that the connection allows, and if any other devices are sharing the port through a hub (a keyboard, mouse, webcam, printer etc.), then the bandwidth available for disk I/O is reduced further.
Whether 12Mbps is enough for captures depends on how you capture. If you are capturing uncompressed AVI, I can guarantee you that the drive will not be able to keep up, UVS will fill up its capture buffer, and you'll quickly get an error message.
So yes, I think the four-port USB card you are about to install will solve the problem.
Whether 12Mbps is enough for captures depends on how you capture. If you are capturing uncompressed AVI, I can guarantee you that the drive will not be able to keep up, UVS will fill up its capture buffer, and you'll quickly get an error message.
So yes, I think the four-port USB card you are about to install will solve the problem.
What type of connector?
I have ordered a 4-port high speed USB connector. Will that solve it?
What type of USB connector is this device? Is it a USB 2.0 card (PIC or cardbus)? Or is it a USB Hub that turns one port into 4 ports?
To get faster USB 2.0 speeds, you will need a USB 2.0 card...
George
forgot to ask -- what type of video are you capturing? how is your video source hooked up to your computer, and what format are you capturing (.avi or .mpg or .other)?
Make sure you disable any non-essential background tasks (Virus Scanner, task scheduler, even screen saver...)
What type of USB connector is this device? Is it a USB 2.0 card (PIC or cardbus)? Or is it a USB Hub that turns one port into 4 ports?
To get faster USB 2.0 speeds, you will need a USB 2.0 card...
George
forgot to ask -- what type of video are you capturing? how is your video source hooked up to your computer, and what format are you capturing (.avi or .mpg or .other)?
Make sure you disable any non-essential background tasks (Virus Scanner, task scheduler, even screen saver...)
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THoff
George makes an excellent point -- I assumed we are talking about a PCI expansion card with what I assume are three external and one internal USB port, and not a hub. If it's just a USB hub, throughput will still be constrained by the USB 1.1 speeds of the port that the hub is plugged into.
Also, for those with USB 2.0 ports on their system, if you connect a USB 1.1 hub to it, or plug a USB 1.1 device into a USB 2.0 hub plugged into a USB 2.0 port, you may limit the overall speed to no more than 12Mbps.
The reason for this that most USB 2.0 hubs feature a single transaction processor (TP) for the entire hub. A single USB 1.1 device plugged into the USB 2.0 hub would drag down the speed by forcing the TP to run at USB 1.1 speeds. I highly recommend buying hubs with multiple TPs, one for each port, such as the Tetrahub from Belkin. It guarantees maximum bandwidth to USB 2.0 devices even if one or more USB 1.1 devices are plugged into the hub.
Also, for those with USB 2.0 ports on their system, if you connect a USB 1.1 hub to it, or plug a USB 1.1 device into a USB 2.0 hub plugged into a USB 2.0 port, you may limit the overall speed to no more than 12Mbps.
The reason for this that most USB 2.0 hubs feature a single transaction processor (TP) for the entire hub. A single USB 1.1 device plugged into the USB 2.0 hub would drag down the speed by forcing the TP to run at USB 1.1 speeds. I highly recommend buying hubs with multiple TPs, one for each port, such as the Tetrahub from Belkin. It guarantees maximum bandwidth to USB 2.0 devices even if one or more USB 1.1 devices are plugged into the hub.
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Peeay
I moved to C:
I have room on the C: drive to capture or edit. I tried it and there were no "unexpected error" messages. It went fine. Then I moved the resulting .mpg file over to the external drive for storage. Aside from the time it takes to move files back and forth, it works fine.
My motherboard manual says "This board also provides a connector USB2 for linking wqith the two USB sockets on the front panel of some system cases." Hmmm. I have ordered an Inldand 4 port high speed 2..0 hub. Presumably, my board and that hub ought to somehow bring me speedy happiness on that external drive? We'll see. Meanwhile, I can work.
Thanks.
My motherboard manual says "This board also provides a connector USB2 for linking wqith the two USB sockets on the front panel of some system cases." Hmmm. I have ordered an Inldand 4 port high speed 2..0 hub. Presumably, my board and that hub ought to somehow bring me speedy happiness on that external drive? We'll see. Meanwhile, I can work.
Thanks.
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THoff
When you had problems before, was the external drive connected directly to the USB port on the motherboard? If so, it should have been running at the full USB 2.0 speed of 480Mbps.
If it was plugged into an external USB hub that was connected to the USB port on the motherboard, and the USB hub was only USB 1.1-compliant, that would explain the poor performance.
If it was plugged into an external USB hub that was connected to the USB port on the motherboard, and the USB hub was only USB 1.1-compliant, that would explain the poor performance.
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Peeay
problem solved inventive sorta
My motherboard doesn't have a USB 2.0 port, I discover. I am doomed to fail in my hope to use that new 120 gigabyte external hard drive.
However, I have two internal hard drives. I swapped the second drive for this new external hard drive by removing both from their enclosures and exchanging places. Thus, my new high gigs drive is internal and I don't have to worry about a USB 2.0 port. Yeah, I know that now-external drive will suffer the slower speed of data transfer. However, it is a drive I use to store webpage stuff and family photos. I can stand the slow access rate on that stuff.
Had to move a little thing to exchange master/slave situations.
Tried the new arrangement. No problem in captures now!
Thanks to all who advised me.
However, I have two internal hard drives. I swapped the second drive for this new external hard drive by removing both from their enclosures and exchanging places. Thus, my new high gigs drive is internal and I don't have to worry about a USB 2.0 port. Yeah, I know that now-external drive will suffer the slower speed of data transfer. However, it is a drive I use to store webpage stuff and family photos. I can stand the slow access rate on that stuff.
Had to move a little thing to exchange master/slave situations.
Tried the new arrangement. No problem in captures now!
Thanks to all who advised me.
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THoff
Why not just get a combined USB 2.0 / FireWire port expansion card? You can even get cards that combine USB, FireWire, and SATA / RAID on one card. A more basic card with just USB and FireWire functionality will cost you about $40.