USB 3.0 video capture device, potentially HD capable?

[VirtualLarry]

Curious, now that USB3.0 is here, are there any higher-end capture devices that run off of USB3.0, rather than a PCI or PCI-E?

I was thinking of building a mini-ITX IB quad-core rig, and keeping my current GTX460 1GB video card, which means that I have no expansion slot for a capture card. I might toy with online video streaming (twitch.tv, etc.). I was wondering if there are any good USB3.0 capture devices? (USB2.0 really kind of cramped the quality of captures, even with SD, so I'm hoping that there are some USB3.0 devices that really allow USB3.0 to stretch its legs.)

Edit: Something like this, but USB3.0.
http://www.newegg.com/Product/Product.aspx?Item=N82E16815116030

 

[borisvodofsky]

Curious, now that USB3.0 is here, are there any higher-end capture devices that run off of USB3.0, rather than a PCI or PCI-E?

I was thinking of building a mini-ITX IB quad-core rig, and keeping my current GTX460 1GB video card, which means that I have no expansion slot for a capture card. I might toy with online video streaming (twitch.tv, etc.). I was wondering if there are any good USB3.0 capture devices? (USB2.0 really kind of cramped the quality of captures, even with SD, so I'm hoping that there are some USB3.0 devices that really allow USB3.0 to stretch its legs.)

Edit: Something like this, but USB3.0.
http://www.newegg.com/Product/Produc...82E16815116030

USB3.0 is not ubiquitous enough for developers to rely on. For everyone who doesn't have USB3.0 it's a lost sale. ;;

However, nearly every new motherboard has at least one free x1 pcie.

 

[VirtualLarry]

USB3.0 is not ubiquitous enough for developers to rely on. For everyone who doesn't have USB3.0 it's a lost sale. ;;

However, nearly every new motherboard has at least one free x1 pcie.

But USB3.0 is backwards compatible with USB2.0. Nearly every portable external HD on the market these days is USB3.0. Why aren't capture devices?

 

[Schmide]

I don't understand the need? Most if not all webcams compress the data in H.264 before sending it over the usb. The bitrate for even the high end models (1-6 megabits/s) is well well below the 60 gigabyte (480 megabit/s) that usb 2.0 can sustain.

Really, it's all going into a internet 1-15megabit stream anyways?

You're fine with 2.0 Dude.

Edit:

BTW The capture device you're looking at is on sale for $160 at best buy.

http://www.bestbuy.com/site/Hauppauge+-+HD+Personal+Video+Recorder/9317768.p?id=1218084034619&skuId=9317768&st=hauppauge&cp=1&lp=2

 

[Ferzerp]

You're WAY overestimating the bandwidth needs.

Consider that OTA 1080p is somewhere around 19Mbit, and bluray is only 48Mbit. 48Mbit is 6MB/s. Real world sustained USB2.0 transfer is 5 times that. (Don't care what the spec allows for, you're only ever going to get around 240 Mbit over USB2.0)


Cheap capture device is cheap capture device. Don't blame the bus

edit: Here's a real-world example for you in regards to bandwidth. The ceton 4 tuner cable card device interfaces with your PC via a 100Mbit LAN connection (basically, the card is a NIC with a 100Mbit bit rate, and then runs circuitry that is also the device on the other end of that NIC). Yes, that's 4 broadcast quality 1080p streams at once on 100mbit, with around 15-20% left to spare. You can easily get 2.5x that over USB 2.0.