Re: Fwd: Capture video from MiniDV over USB?

["John Abreau-2" <user=184@nabble.blu.org>]

 I'm not questioning MPEG over USB; that's nothing like full-rate DV. 
Firewire was designed with real-time video in mind; handling 
full-rate DV was the design goal. 

USB2 may have a comparable overall throughput, but I'm skeptical 
of the implicit claim that it has the real-time functionality to deliver 
full-rate DV without dropping a lot of frames. 


Eric Chadbourne wrote: 
>>> You COULD shove full-rate DV down a USB 2.0 pipe. It's just 
>>>       
>> that very 
>>     
>>> few camcorders bother to implement it. 
>>>       
>> Really? Without dropping so many frames that the video turns to crap? 
>> 
>>     
> 
> I used to have a JVC digital cam that could stream good quality mpg4 via 
> USB.  To my eyes it looked almost DVD quality. 
> 
> What Mark says seems possible but not sure if any hardware actually does 
> it. 
> 
> [quote = http://en.wikipedia.org/wiki/Usb#USB_compared_with_FireWire] 
> Although similar in theoretical maximum transfer rate, in real-world 
> use, especially for high-bandwidth use such as external hard-drives, 
> FireWire 400 generally, but not always, has a significantly higher 
> throughput than USB 2.0 Hi-Speed. 
> [/quote] 
> 
> - Eric C. 
> 
>