The reason why companies like ATI don't offer pure VIVO versions of their video cards is because there is an almost complete lack of market for them.
<b>Most</b> people who want video in on a Radeon ____ are going to want TV input as well. In fact, <i>most</i> of the market will want the tv tuner and remote control long before they even consider the usefulness of a s-video in port.
<b>Most</b> people who do professional video use a true framegrabber where framerates are constant. (Check out Matrox's line of professional imagine hardware.) To use that stuff is expensive though, which is why ATI doesn't even try to market a combination 3d/framegrabber. Hell, even Matrox doesn't offer a Parhelia (their best 3D) with a framegrabber. Matrox's best combo solution is the very antiquated G400 graphics chip.
The next less expensive line for what is considered 'semi' professional video in is to use a Firewire solution. ATI <i>tried</i> to reach that group of people with their All In Wonder Radeon 8500DV. However, there just wasn't a large enough market for it, because most people who wanted a Firewire solution already had one from a PCI card or built into their motherboard. ATI lost money trying to make and sell these cards.
And so, the next step down from that, a VIVO type Radeon solution, is incredibly rare these days. They have inconsistant framerates and poorer video quality. (The two banes of videophiles.) Because of this, there just isn't enough of a market for that type of a card because it's so far under 'professional' standards that the only market for them would be people who just consider it fun. And of those people that are in it just because it is fun, they either settle for a PCI card for video capture, or they will buy an All In Wonder type of solution.
So companies like ATI don't offer pure VIVO/3D combos because simply, there just aren't enough people out there wanting to buy one to justify the costs of producing and selling them. Companies are in the business of making money after all.
The VIVO products only existed because for a time, they <i>were</i> the professional standard. Firewire and framegrabbers either didn't exist yet or were far too expensive for semi-professional use. Therefore, there was a large enough market for a VIVO/graphics combo card. Today, because of the lowered prices of framegrabbers combined with the dirt cheap price of PCI Firewire cards, there just isn't such a market. Thus, no more products along the VIVO/3D combo line.
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