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About FPS drop during video capture
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Kokkolar
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Videocard: GeForce GTX 760
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Default About FPS drop during video capture - 07-19-2014, 04:27 | posts: 12 | Location: Russia, Moscow

Video capture settings
Video format: MJPG compression
Container format: AVI
FPS: 25
Quality: 75%
Frame size: full rame
FPS limit: disabled

Diablo 3 - just stand in town do nothing.

Stats with no record
GPU usage: 99%
FPS: 110
CPU usage: 10,20,20,40, 1,1,1,1

Stats during video capture
GPU usage: 90%
FPS: 85
CPU usage: 15,25,25,35, 1,1,1,1

So i can't understand why am i getting so huge (23%) FPS drop during record while my 8-core processor not even use a half of his power and GPU don't even works on 99% during record?
   
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BenYeeHua
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Videocard: Asus 650M D3
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Default 07-19-2014, 13:05 | posts: 1,509

Quote:
So i can't understand why am i getting so huge (23%) FPS drop during record while my 8-core processor not even use a half of his power and GPU don't even works on 99% during record?
Many thing, like the overhead for getting the frame from GPU, the bandwidth of RAM, the PCI-E etc.
   
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Kokkolar
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Videocard: GeForce GTX 760
Processor: Intel Core i7 4820K
Mainboard: ASUS P9X79
Memory: Corsair DDR3 2x4GB, 1866
Soundcard: ASUS Xonar DS
PSU: Cougar GX 1050W
Default 07-20-2014, 08:28 | posts: 12 | Location: Russia, Moscow

I am just thinking about GTX 760, can it helps to improve performance during video capture?
   
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BenYeeHua
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Default 07-20-2014, 12:43 | posts: 1,509

I think it might be nope.
You can try use Shadow Play as it capture the Frame with Frame Buffer Capture (NVFBC).
If Shadow Play don't has this issues, then it might be the overhead for getting the Frame, or because it is using the NVENC, which is the hardware H.264 encode the video.

You may also wanna try using the NVENC to encode the video for check for it.
   
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Kokkolar
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Videocard: GeForce GTX 760
Processor: Intel Core i7 4820K
Mainboard: ASUS P9X79
Memory: Corsair DDR3 2x4GB, 1866
Soundcard: ASUS Xonar DS
PSU: Cougar GX 1050W
Default 07-21-2014, 05:33 | posts: 12 | Location: Russia, Moscow

I can't use Shadow Play until i buy NVidia GPU This does not work with Radeon
   
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BenYeeHua
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Videocard: Asus 650M D3
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Default 07-21-2014, 12:31 | posts: 1,509

Sry for that, sometimes I forgot which graphic OP is using.
You may want to try encode it by using AMD Video Codec Engine (VCE)?
Even it is slower than your Intel graphic QuickSync, it should be fast enough(as you are encode to 25FPS), I guess.
   
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octiceps
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Default 07-21-2014, 20:25 | posts: 124

OP has a 5770. Pre-GCN does not have VCE.
   
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Kokkolar
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Videocard: GeForce GTX 760
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Mainboard: ASUS P9X79
Memory: Corsair DDR3 2x4GB, 1866
Soundcard: ASUS Xonar DS
PSU: Cougar GX 1050W
Smile 08-07-2014, 20:02 | posts: 12 | Location: Russia, Moscow

Quote:
Originally Posted by BenYeeHua View Post
I think it might be nope.
I just bought GeForce GTX 760 and now i almost don't have FPS drop during recording in Diablo 3.

It is like 142 FPS without record and 139 FPS with record now, amazing! (By MSI Afterburner not ShadowPlay).
   
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BenYeeHua
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Videocard: Asus 650M D3
Processor: I5-3210M
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Memory:
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PSU: Laptop 90W Adapter
Default 08-08-2014, 23:01 | posts: 1,509

Quote:
Originally Posted by Kokkolar View Post
I just bought GeForce GTX 760 and now i almost don't have FPS drop during recording in Diablo 3.

It is like 142 FPS without record and 139 FPS with record now, amazing! (By MSI Afterburner not ShadowPlay).
Good to hear about that, and thank for the sharing, so I guess the overhead for capturing the Frame is very low now, and the GDDR5 bandwidth + hardware H.264 encode is also enough for encoding the video while playing/rendering too.
   
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