Question / Help 1920x1200 and a second computer

[Optimoos]

I'm trying to come up with the best solution for streaming the games I play. The problem is that I play on an older i7 920 which I won't be replacing until Haswell is released later this year, and playing the game as well as encoding at high resolution can sometimes be too much for the system depending on the game.

I have a perfectly fine second computer that would easily deal with the encoding, but the problem is getting the video to it. As I play at 1920x1200, my monitor's native resolution, there are seemingly zero capture card options which support this resolution. The simple solution here would be for someone who knows better to recommend an appropriate capture product to me, although I've spent much time on Google with zero success.

The alternative that I've wondered about is whether now (or perhaps in the near-ish future) it would be possible to capture the video essentially uncompressed at the source and ship it across the network to the second computer to be broadcast. Hopefully the lack of compression occurring on the gaming computer would mean the cpu impact would be minimal, and I have a gigabit network which I believe would support the throughput required although I might be wrong.

Any help with this?

 

[kaloc]

The expensive solution to this would be to use a high end capture device such as : DeckLink 4K Extreme ( $995 ). You'd have to step up to 4k capture devices because of your resolution.

As for sending video over LAN to a second pc, that is possible, but at your resolution you would need everything set up just right to get the bandwidth needed. At 30fps you'd need approx. 104 MB/s which is getting very close to the max bandwidth of gigabit + overhead. Here is a handy calculator to look at raw bandwidth numbers :
http://web.forret.com/tools/video_fps.asp?width=1920&height=1200&fps=30&space=yuv420&depth=8

The trick is the data can never touch a disk.. it has to go from capture program1 >> ethernet pc1 >> ethernet pc2 >> capture program2.

 

[dodgepong]

There are some Datapath cards that can capture 1920x1200. Muf is working on a plugin source for them for OBS: viewtopic.php?f=11&t=1180

 

[kaloc]

There are some Datapath cards that can capture 1920x1200. Muf is working on a plugin source for them for OBS: viewtopic.php?f=11&t=1180

I didn't know about that plugin, but it sucks that it's limited to those cards only ( as of right now ) .. and from what I could find they are just as expensive as the higher end black magic cards.

 

[Optimoos]

Yeah, seems like the Datapath cards are $1000+, which would be much better spent on a new computer than a single capture card.

My other option, I suppose, is playing at 1080p without my monitor scaling the image so it's still native resolution with black bars. I've seen one mention of this out there on the intertubes but no real details on making it work, so perhaps I'll have to fiddle with that tonight and see what I can make happen.

 

[nrw2000]

As for sending video over LAN to a second pc, that is possible, but at your resolution you would need everything set up just right to get the bandwidth needed. At 30fps you'd need approx. 104 MB/s which is getting very close to the max bandwidth of gigabit + overhead. Here is a handy calculator to look at raw bandwidth numbers :
http://web.forret.com/tools/video_fps.asp?width=1920&height=1200&fps=30&space=yuv420&depth=8

The trick is the data can never touch a disk.. it has to go from capture program1 >> ethernet pc1 >> ethernet pc2 >> capture program2.

Could someone recommend a corresponding software?
Thanks.