Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: PCIe Capture Cards, CPU load etc.

18 Nov 2015   #1
stuckstuck

Microsoft Windows 7 Professional 64-bit
 
 
PCIe Capture Cards, CPU load etc.

I hope I'm posting this in the right place.
So I've been thinking of buying a capture card (PCIe), but before I actually go buy one I want to just make sure that what I'm thinking is actually the case.
So.. I want to live stream gameplay, the CPU load gets hefty because it's juggling resources with the stream as well as the actual game I'm playing.
My question to you guys is, will a PCIe capture card take up the CPU load off my computer (The streaming live encoding stuff), giving my computer (CPU) the freedom to concentrate on the game?
This is the capture card I'm interested in, will this do exactly what I'm hoping it will do?


My System SpecsSystem Spec
.
18 Nov 2015   #2
Lava King

Windows 7 Home Premium x64
 
 

I gather that you are playing a PC-based game and live streaming on the same PC? If so, then the capture card will not help in any way.

The function of a capture card is to capture the video/audio feed from a console, or a separate PC. It will have no effect if the game is played on the same PC that the capture card is installed in.

No matter the source, the gameplay will have to be encoded by the streaming PC. Your encoding settings can be tweaked to find the right balance between stream quality and CPU load.
My System SpecsSystem Spec
18 Nov 2015   #3
stuckstuck

Microsoft Windows 7 Professional 64-bit
 
 

Quote   Quote: Originally Posted by Lava King View Post
The function of a capture card is to capture the video/audio feed from a console, or a separate PC. It will have no effect if the game is played on the same PC that the capture card is installed in.
Could you explain to me why me having the PCIe capture card installed in my gaming rig wouldn't make the difference I thought it was going to make?
Why does it have to be used from another source (in my case another PC) in order for it to go do it's thing?
My System SpecsSystem Spec
.

19 Nov 2015   #4
Lava King

Windows 7 Home Premium x64
 
 

The sole purpose of a capture card is to bring an external Audio/Video signal into a PC. If the signal is already digital (such as from an HDMI connection) then it mostly passes the signal through with very little processing.

When you are playing a game on your PC, the game's Audio/Video ALREADY exists in your PC as a digital signal. Your broadcast software (OBS, X-Split, etc) intercepts that digital signal and processes it to meet the requirements of the Streaming Site. In this case, the Capture Card may present an ADDITIONAL load to your CPU.

However, if you intend to use the "Direct Streaming" function of the Capture Card, you may reduce your CPU load very slightly. Additionally, if you have a recent generation Nvidia GPU, it can directly stream to many Streaming Sites using Shadowplay without the need for a Capture Card.

Be aware, however, that the Direct Streaming methods will not allow such niceties as overlays, face-cam, voice-over and the like. Only the content generated by the game will be streamed.

Which game do you wish to stream and what Streaming Site are you planning on using?
My System SpecsSystem Spec
19 Nov 2015   #5
stuckstuck

Microsoft Windows 7 Professional 64-bit
 
 

Quote   Quote: Originally Posted by Lava King View Post
Which game do you wish to stream and what Streaming Site are you planning on using?
Just twitch. I guess what I want would just require me to get a really powerful CPU so I can game seemlessly along with a quality looking stream, all in one computer.
My System SpecsSystem Spec
19 Nov 2015   #6
Lava King

Windows 7 Home Premium x64
 
 

Your i7-920 should be more than up to the challenge of streaming to Twitch.

I streamed Borderlands 2 at 720p 30fps using a Core 2 Quad X9650 with 4 GB RAM. On that same PC, the game was being played at 1920x1200 on a GTX 780. The CPU utilization never dropped below 90%, but the stream quality was good and there were no dropped frames.

As I mentioned before, tweaking your stream settings will give you a good balance between stream quality and CPU use.

Targets to aim for: 720p, 30fps, 2.5Kbps or lower. Exceeding those parameters will make your stream very pretty, but may exclude viewers with low-bandwidth connections or with data caps (and those on mobile).

I'm at work right now, so I can't elaborate any further. If you have any specific questions, ask away!

My Twitch channel: twitch.tv/dimensiondude

Not very active at the moment (as far a broadcasting goes) but I plan to remedy that soon.

Let me know your Twitch name and I'll check out your channel.
My System SpecsSystem Spec
19 Nov 2015   #7
stuckstuck

Microsoft Windows 7 Professional 64-bit
 
 

Quote   Quote: Originally Posted by Lava King View Post
Targets to aim for: 720p, 30fps, 2.5Kbps or lower. Exceeding those parameters will make your stream very pretty, but may exclude viewers with low-bandwidth connections or with data caps (and those on mobile).
wh-, I just looked at your twitch page and saw on your specs that you're rocking a fat hefty i7-5960X.
Don't talk to me.
Yeah Im going for an easy 720p 60fps, 'easy'. Without having to sacrifice gameplay graphics etc. AT. ALL.
Whilst streaming I wouldn't want to turn everything down so that the stream looks okay, I want everything to look great, for the viewers as well as myself.
My System SpecsSystem Spec
19 Nov 2015   #8
Lava King

Windows 7 Home Premium x64
 
 

My hardware isn't a secret, it's in "My System Specs" here on SF

I understand your goals, and they are good goals. I have seen game streams with such poor quality video that I wondered why they even bothered. Getting your broadcast software settings JUST RIGHT can give you a good result without compromising your integrity.

Don't overlook the importance of good audio if you intend to talk on-stream. I mean GOOD AUDIO. The bandwidth limited microphones on most headsets sound like crap. Excessive background noise (TV, radio, screaming family members) will put people off your stream just as fast as poor video quality. I will leave a stream (without comment) if there are excessive "thumps" because the mic stand is not isolated from the table/desk (I always use a sub-woofer) or if there are "pops" and "crackles" from poor connections.

An alternative streaming method: Use 2 PCs. Get a cheap, used PC and install a capture card. Play the game on your good PC, the second PC will capture and stream. It should be cheaper than building a "monster" PC. I'm unsure what the lowest spec PC would be for streaming.
My System SpecsSystem Spec
19 Nov 2015   #9
stuckstuck

Microsoft Windows 7 Professional 64-bit
 
 

Way ahead of you with the audio.
And here's the thing with the 2-PC setup, the room.
That's the reason why I'm going for the "All-in-one" solution, the only thing really is my CPU, in fact that's the ONLY thing.
The irony is that if I go ahead with the new CPU I would need to change the motherboard because of the different CPU socket, and also the RAM aswell because the CPU only accept DDR4 memory.

P.S. The specs shown in my SF acc is out-dated.
My System SpecsSystem Spec
Reply

 PCIe Capture Cards, CPU load etc.




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Capture Cards for Gamecube/Wii/PS2 Recording?
I've been reading about capture cards for about 3 hours now and i'm still no better off. People will say one works great and others will say it doesn't, and it's not like i can get a trial version to test either. I don't want to buy one and find out it doesn't do something specific that i want it...
Gaming
Information about capture cards and how to use them
Hi guys, i usually record PC games using fraps and it got me thinking to how do people record console footage and then put it on the computer. The problem is i dont know the first thing about gaming capture cards and how they work, i do know however that some of them are PCI cards. so a couple...
Gaming
Help with EC and PCIE cards
hi so i have a dell studio 1458 laptop. now i have a Express Card (EC) on it and in the manual says that it can do all kool things like wifi cards and what not. however in the manual, it also says *not compatable with PC cards* however im trying to do this: External Graphics Card - Add a eGPU...
Hardware & Devices
Capture cards?
Dose anyone know a decent capture card to get? or even a good site to find one? i just want to make a few vids for the likes of youtube. doesn't have to be hd or anything. prob in and around the price range of about 50 euro. thats prob about 65 or 70 dollars. thanks for any help! :D
Gaming
Windows 7 compatible video capture(tv tuner) cards
Hi, I am looking for Windows 7 compatible video capture(tv tuner) PCI interface cards. Can you please suggest the same? Any help in this regard is highly appreciated Regards, Manpreet
Graphic Cards
Will 7work with Nvidia & ATI PCIe cards together?
I have a XFX GeForce 9800 GT installed on my Asus P5N-E in one of my two PCIex16 slots, I also have a HD 4350 ATI Radion that I would like to install so I can use the hdmi output to my receiver. I have to hold off on getting a HTPC for a bit. Soon I hope. Thanks
Graphic Cards


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 23:25.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App