Fantus_Longhorn
Member
What FPS have others been able to transfer at? I've set a limit of 30 but the FPS Actual doesn't ever go much above 20.
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Fantus_Longhorn
Member
Thanks.
It shouldn't be a bottle neck. CPU was at 7% and I'm running across a gigabit switch which wasn't being overloaded. Guess I'll have to try some more configs and see how I get on.
It shouldn't be a bottle neck. CPU was at 7% and I'm running across a gigabit switch which wasn't being overloaded. Guess I'll have to try some more configs and see how I get on.
Fantus_Longhorn
Member
It doesn't seem to matter what I do but the FPS maxes out at 20. There are no bottle necks as whatever I push from one PC gets through to the other (uncompressed with no resize is about 700mbps) and CPU usage is 5% at most.
Fantus_Longhorn
Member
Latest build in both cases. I'm going to delete everything and start over fresh in a little bit, just to be sure. If you want me to test anything then just let me know.
It's strange that you are stuck exactly at 20 fps. To do the math, you need 1280 * 720 * 3 * 30 bytes / second = 82944000 bytes / sec = 79.1 MByte / sec network speed to be able to push that. I only have one PC and a crappy 100mbit switch ( yeah i know.. ) so i can't even test your setup. BUT it would be normal behavior that my router gets saturated and would limit transfer speed to something lower than 30 FPS.
Can you test some smaller resolution that only requires like 3Mbyte / sec transfer and see if you are still stuck at exactly 20 fps ?
Maybe the issue is not even at the side of the capture PC but the one that renders it ? Maybe there is some limitation there that is blocking to receive more than 20 fps ?
You can try to use console mode capture PC with debug logging and check each step how much time it takes and how much you could stream with in theory.
Can you test some smaller resolution that only requires like 3Mbyte / sec transfer and see if you are still stuck at exactly 20 fps ?
Maybe the issue is not even at the side of the capture PC but the one that renders it ? Maybe there is some limitation there that is blocking to receive more than 20 fps ?
You can try to use console mode capture PC with debug logging and check each step how much time it takes and how much you could stream with in theory.
Fantus_Longhorn
Member
This was on the GamerPC, viewing the stream locally so no network involved:
Time Required for Capture seems a lot higher than your results.
EDIT: I'm on Windows 8.1. by the way.
Time Required for Capture seems a lot higher than your results.
EDIT: I'm on Windows 8.1. by the way.
I tested on win 7.
I read somewhere that disabling hardware acceleration might give it a boost. Can you test that ?
Back in the old days disabling "aero" or other window arts also boosted render speed ( i can not test this as i do not have win 8 ! ) : http://www.thewindowsclub.com/disable-visual-effects-windows
I tried to search for faster capture methods, but could not find a "good for all" method yet. Will try more...
I read somewhere that disabling hardware acceleration might give it a boost. Can you test that ?
Back in the old days disabling "aero" or other window arts also boosted render speed ( i can not test this as i do not have win 8 ! ) : http://www.thewindowsclub.com/disable-visual-effects-windows
I tried to search for faster capture methods, but could not find a "good for all" method yet. Will try more...
Fantus_Longhorn
Member
You can't disable Aero in Window 8. Tried disabling all visual effects and I lost a few frames. I haven't got a Windows 7 PC here at the moment but I might be able to spin up a couple of Virtual Machines over the weekend, If I get a chance I'll let you know how it goes. Failing that, I can try it at work next week.
Just out of curiosity, is it an option for you to have a smaller input ? If it is desktop input, than set desktop resolution smaller. If it is a window input, than resize to 640x320 ? I'm sure the quality will not be as good as using native resolution, but on renderer side you could apply some smart upscale filters that could remove some of the added artifacts.
Also as info, most humans can hardly distinguish more than 24 fps. Some movies do not even have effective 19 fps ( frameskips, truncated data compression...). Unless you are using an uncompressed video as output, the struggle for very high fps in most cases simply does not worth it.
Also as info, most humans can hardly distinguish more than 24 fps. Some movies do not even have effective 19 fps ( frameskips, truncated data compression...). Unless you are using an uncompressed video as output, the struggle for very high fps in most cases simply does not worth it.
Fantus_Longhorn
Member
I'll give it a go and see if it makes any difference.
I'm one of those people that can but that's more relevant to gameplay and that kind of thing. A mimimum of 24fps would be fine for this but 20 is just a little to low to use. That said, I'm experimenting with what you've made. I have no specific application for it right now so please don't feel under any pressure to make it work any better.
Fantus_Longhorn
Member
Performance is significantly improved on Windows 7 so it's looking like that's the issue. I need to do some more testing to confirm, though.
Air Mozilla
Member
Does anyone know of a similar project on *nix or OS X? ...or are there any plans to port this project?
got recruited for 2 other projects = sadly i'm putting this one on hold = no plans for porting it to other OS :(
In theory you need to swap out windows socket + image acquire + img render. If you are a decent coder, it could be done within a day or so ( i don't even have OS X or nix installed atm... )
Regarding network speed improvement. An idea would be to add a source filter to check if anything changed since previous capture. Maybe send data as diff...I'm mostly talking to myself to add it some day :D
In theory you need to swap out windows socket + image acquire + img render. If you are a decent coder, it could be done within a day or so ( i don't even have OS X or nix installed atm... )
Regarding network speed improvement. An idea would be to add a source filter to check if anything changed since previous capture. Maybe send data as diff...I'm mostly talking to myself to add it some day :D
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