SysDVR
Stream/record gameplay to a PC via USB or network.

​

Update: Version 5.0 has been released with low latency streaming, be sure to check it out on github.

This is an experimental sysmodule that allows capturing the running game output on a pc.
As this uses switch's built-in game recording feature it has the same limitations: 720p@30fps and only works on the games that enable it, but by sending the video to another device there's no time limit to the recording.

There are two modes: USB and Network, both work fine but USB is slightly better, at least compared to wifi, didn't try with a LAN adapter.
Players like mpv or vlc can play the stream directly so you can use any screen recording applications but it's also possible to write the stream directly to a file.
To use the USB version you need the UsbStream program you'll find on the github page, it's built using .NET 5 and works on both windows and linux, haven't tried mac but in theory it should work too.

You can see it in action in the two teasers i posted while working on it:

Spoiler

🧐 pic.twitter.com/siDCGtoQtX

— exelix (@exelix11) October 9, 2019

This time with audio and w i r e l e s s
Coming very soon ! pic.twitter.com/wloZuOF8Nk

— exelix (@exelix11) October 16, 2019

As you can see it's not meant for remote play, but it can work as a basic capture card, audio output is uncompressed so it can be useful for ripping OSTs .

Download and wall of text guide on github: https://github.com/exelix11/SysDVR/
To get notified of updates you can follow this thread or join my new discord server (i also have a twitter account where occasionally post development updates).
Please make sure to read the full readme before reporting issues as it explains the most common problems you may encounter.

 

[The Real Jdbye]

Now this is useful. Got a capture card myself but even so there are a few games that can only be played in handheld mode or that are much better played in handheld mode so it's still useful for those and most other people probably won't have a capture card laying around.
720p@30 isn't great but really any Switch game with advanced enough graphics that would benefit from a higher resolution are probably locked to 720p (or less) anyway. It's mostly simpler indie games and such that get the full 1080p@60. And 720p seems to be the standard for Twitch streaming still anyway.
Now, how long do you reckon until someone uses this to make a shiny hunting bot for Sword/Shield once they release? A week? 2 weeks? Probably not much more than that TBH

 

[M7L7NK7]

Kepp getting this

C:\Users\X\Desktop\UsbStream>UsbStream video C:\Users\X\Desktop\mpv-x86_64-20181002\mpv audio C:\Users\\Desktop\mpv-x86_64-20181002\mpv
UsbStream - 1.0 by exelix
https://github.com/exelix11/SysDVR

Unhandled exception. System.Exception: C:\Users\\Desktop\mpv-x86_64-20181002\mpv is not a valid video mode
at UsbStream.Program.<>c__DisplayClass16_0.<Main>g__ParseTargetArgs|0(Int32 baseIndex, IOutTarget& t)
at UsbStream.Program.Main(String[] args)

 

[Asia81]

Ok I managed to use it.
Now as I installed libusb-win32 and it probably replaced the previous driver, if I use nxmtp, it crash my switch

That's not possible to keep both driver?

 

[KuranKu]

awesome work @exelix11

 

[leon315]

The twitch streamer saved 200bucks for Elgato.....

 

[M7L7NK7]

C:\Users\x\Desktop\UsbStream>UsbStream video mpv C:\Users\x\Desktop\UsbStream/mpv.com audio mpv C:\Users\x\Desktop\UsbStream/mpv.com
UsbStream - 1.0 by exelix
https://github.com/exelix11/SysDVR

Unhandled exception. LibUsbDotNet.LibUsb.UsbException: Operation not supported or unimplemented on this platform
at LibUsbDotNet.LibUsb.ErrorExtensions.ThrowOnError(Error error)
at LibUsbDotNet.LibUsb.UsbDevice.Open()
at UsbStream.Program.GetDevice()
at UsbStream.Program.Main(String[] args)

 

[exelix11]

Ok I managed to use it.
Now as I installed libusb-win32 and it probably replaced the previous driver, if I use nxmtp, it crash my switch

That's not possible to keep both driver?

Haven't tried nxmtp but In theory this shouldn't happen as i changed the device id. Will make some tests and let you know.
Did you try to launch nxmtp while the sysmodule was running ? That could have been the issue.

C:\Users\x\Desktop\UsbStream>UsbStream video mpv C:\Users\x\Desktop\UsbStream/mpv.com audio mpv C:\Users\x\Desktop\UsbStream/mpv.com
UsbStream - 1.0 by exelix
https://github.com/exelix11/SysDVR

Unhandled exception. LibUsbDotNet.LibUsb.UsbException: Operation not supported or unimplemented on this platform
at LibUsbDotNet.LibUsb.ErrorExtensions.ThrowOnError(Error error)
at LibUsbDotNet.LibUsb.UsbDevice.Open()
at UsbStream.Program.GetDevice()
at UsbStream.Program.Main(String[] args)

Windows version ? 64 or 32 bits ? Did you install the correct driver ?

 

[M7L7NK7]

Windows version ? 64 or 32 bits ? Did you install the correct driver ?

Was my bad, had the network atmosphere files instead of usb...


but now I get
Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

It sometimes pops up on the pc for a few seconds then exits

 

[exelix11]

Was my bad, had the network atmosphere files instead of usb...


but now I get
Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

It sometimes pops up on the pc for a few seconds then exits

Error from the usb lib, not sure what could be the issue, did you follow the driver setup guide ? Do you have some other sysmodule that could be using the usb port ?

 

[M7L7NK7]

Yeah installed libusb win32, and dont think anything else is using it

 

[exelix11]

Ok I managed to use it.
Now as I installed libusb-win32 and it probably replaced the previous driver, if I use nxmtp, it crash my switch

That's not possible to keep both driver?

Just tested goldleaf and exploring pc files via usb works fine, it also shows as a different device so ig it's working as expected, could be that nxmtp uses the same id ? that would be really lol.
You did not say if the sysmodule was running at the same time as nxmtp, in case it was try removing it and launching just nxmtp.

Yeah installed libusb win32, and dont think anything else is using it

Tbh not sure at this point, can you check in device management if this is what you see: https://gbatemp.net/threads/sysdvr-stream-gameplay-directly-to-a-pc.550616/#post-8832896
Also do a clean install of atmosphere to make sure you don't have other sysmodules using usb.

 

[yyoossk]

Interesting, the device name is different for me:
View attachment 183557
Could you check if the "device path" matches ?
Do you have by any chance another sysmodule that uses the usb port like mtp-server-nx ?

This issue was fixed by reintroducing the CFW file
thx!

 

[M7L7NK7]

Just tested goldleaf and exploring pc files via usb works fine, it also shows as a different device so ig it's working as expected, could be that nxmtp uses the same id ? that would be really lol.
You did not say if the sysmodule was running at the same time as nxmtp, in case it was try removing it and launching just nxmtp.


Tbh not sure at this point, can you check in device management if this is what you see: https://gbatemp.net/threads/sysdvr-stream-gameplay-directly-to-a-pc.550616/#post-8832896
Also do a clean install of atmosphere to make sure you don't have other sysmodules using usb.

Named the sane as yours, I have nothing else that's using usb

--------------------- MERGED ---------------------------

zadzig keeps saying that the switch's current driver is libusb0 no matter how many times i install libusb win32

 

[exelix11]

Named the sane as yours, I have nothing else that's using usb

--------------------- MERGED ---------------------------

zadzig keeps saying that the switch's current driver is libusb0 no matter how many times i install libusb win32

Is the sysmodule running while you do the zadig process ? If it isn't zadig will apply the driver to the default switch os descriptor rather than SysDVR's.
The sysmodule should launch around 20 seconds after boot, you can make sure it's the right one cause the PID is 3006

 

[M7L7NK7]

How do you tell?

 

[Deleted member 506316]

I gotta say this is a pretty big brain idea.

 

[exelix11]

How do you tell?

Just updated the readme, you could have installed the driver to the wrong device, do again the setup with zadig and check if the device id is correct this time.

 

[Deleted member 420418]

Super useful, thanks exelix!

 

[luk_pop]

Gr8 tool, but not working at my PC

C:\test>run2

C:\test>UsbStream video mpv C:\test\mpv audio mpv C:\test\mpv
UsbStream - 1.0 by exelix
https://github.com/exelix11/SysDVR

Unhandled exception. System.ComponentModel.Win32Exception (2): Nie można odnaleźć określonego pliku.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at UsbStream.Program.StdInTarget..ctor(String path, String args)
at UsbStream.Program.<>c__DisplayClass16_0.<Main>g__ParseTargetArgs|0(Int32 baseIndex, IOutTarget& t)
at UsbStream.Program.Main(String[] args)

C:\test>

 

[JonJaded]

Excellent work!