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USB transfer speeds
Greetings Folks!
I'm a computer engineer and new to the forum. I didn't see a "New People" thread anywhere, so I'll just post away. Although I'm new to HD video production, this topic and a few others are inside my area of expertise. USB 2.0 can achieve real-world transfer rates up to 40 MegaBytes per second. So an 8GB card should transfer in about 3.5 minutes. But if either the device or the host computer are not well designed, then you won't achieve those rates. Hard drives, motherboard, and device drivers are all factors. I would expect at least 25 MB/s regardless of what type of computer is used. Quote:
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using a PC laptop with an express slot
using sony clip browser by inserting a card into laptop. < 8 gig card almost full / 5 clips =ing 7.2 gigs> the copy to the laptop was about 5.5 mins the export to mfx was the same I put the card back in the camera and transfered the same files using clip browser via the usb cable from camera to laptop. It took a little less than twice as long at 9.2 mins Not too shabby!! I can deal with that offload time using my mobil laptop. I also got a deal on some sony 8gig usb thumb drives that can be used as backups... or just burn to the dual layer burner. So I feel safe wiping a card that has been copied to the lap hd, usb drive and DVD-R. |
I just got my Sony card reader,plugged it in,(plug and play),transfered 4mins of footage in 1 min.
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