Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Does anyone know what these RCA-to-USB cables are/do? There doesn’t seem to be any electronics in the cable like an EasyCap, so I can only assume that the RCA connectors are directly connected to the USB pins. I suppose that it could be used for A/V capture, assuming of course that there were some kind of driver/software, but then again, I doubt that the computer would pick it up as a device of any kind when you connect it since it would be directly connected to a TV/VCR/etc. Looking around, I see mentions of connecting it to “RCA cameras”, but that does not clear things up at all.

What are they?

enter image description here enter image description here

share|improve this question
add comment

1 Answer 1

According to the product description at Amazon, they are RCA-to-USB cables...

They plug into a camcorder via RCA, to display images/sound on certain "USB-enabled TVs and PCs."

share|improve this answer
    
Exactly, but that doesn’t make sense; all modern PCs are “USB-enabled”, but I highly doubt that you can just plug an RCA A/V source into it and capture audio and video (for the reasons I mentioned in the post). Even with a TV, I would imagine that it would require a USB-to-USB cable the way a DVD/DivX-player with a USB connector does. –  Synetech Jul 6 '11 at 6:29
    
Yeah, I don't know how it works. Google searching suggests that a driver is needed. But it does seem that it is intended only for camcorder-to-PC/TV, and not the other way around. I wonder if maybe it doesn't truly adhere to USB specs, and thus might not work through a USB hub? Or maybe there really are some conversion electronics in that little black box. I've seen a few other similar products on google with much larger boxes--with sufficient room for a PCB. Maybe the newer ones are just that much smaller. –  Flimzy Jul 6 '11 at 6:36
1  
There's a lump of plastic in the lead and also a large moulding round the USB connector - plenty of room for some electronics –  Linker3000 Jul 6 '11 at 8:42
    
@Linker3000, possibly, but I suspect that those are just to make it easier to manufacture these cheap cables (smaller = more expensive). –  Synetech Jul 7 '11 at 0:13
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.