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Posted by curious314159 on 11/12/06 18:46
Thanks, enormously insightful so far:
pass thru via DV camcorders A/V In DV out? Great idea, but
I worry however, if that is sufficient and if there are restrictions
associated with DV? In particular I use CMU's generic
1394 firewire camera drivers to access the image content
in my C/C++ programs, so the firewire output needs to be
compatible with standard firewire protocols.
Does anyone know if Canopus or ADS Pyro converters
would work with the CMU's generic Firewire camera drivers?
(Can you capture the image stream the are putting out with generic
firewire drivers?)
Ben
Richard Crowley wrote:
> curious314159 wrote ...
> > Is there something out there that does this:
> > Convert NTSC analog signal into Firewire or USB:
> >
> > I have an analog input - want to convert it to
> > digital Firewire, or USB and grab the image in my program?
>
> Since you didn't say so, we will assume that you want to
> put the video into a file so that you can edit/convert it?
> You also didn't name "my program". These items of info
> are enormously valuable to try to scope out exactly what
> you need here.
>
> Many (but certainly not ALL) mini-DV camcorders will
> do "pass-thru" where you can plug an analog video/audio
> signal into their input connector and they will digitize the
> video/audio into a "DV stream" out of their Firewire port.
> You can then plug this into the Firewire port on a computer
> and capture the video just as if it were coming from a tape
> in the camcorder itself.
>
> There are also standalone boxes (such as the well-favored
> Canopus ADVC-110) which do video conversion in both
> directions. The ADVC-55 does input-only for less $$$
>
> Depending on what you are doing with this video, and what
> your quality expectations are, you are far more likely to find
> eqipment that uses Firewire than USB. USB1.x is too slow
> for video, and USB2 is generally used only by equipment
> which uses MPEG compression (like mini-DVD camcorders)
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