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.

 

[NachoBlzzy]

awesome I will try this out later

 

[Dr.Hacknik]

Oddly the SysModule caused Atmosphere to hang on Switch Logo. Don't know why, or just me.

 

[ELY_M]

UPDATE: I had to install driver called libusb and it worked

I had different usb driver installed for goldleaf.




I have issues my switch is on and running a game and I checked if I can video capture it. everything is ok but I get error on usbstream.
I am using USB sysmodule.

I have the netcore 3.0.0 installed

Microsoft Windows [Version 10.0.17763.805]
(c) 2018 Microsoft Corporation. All rights reserved.

M:\switch\sysDVR\UsbStream>start-mpv.bat

M:\switch\sysDVR\UsbStream>UsbStream video mpv "M:\switch\sysDVR\UsbStream2\mpv.com" audio mpv "M:\switch\sysDVR\UsbStream2\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)

M:\switch\sysDVR\UsbStream>

I made a Noob Friendly setup guide for PC Users here.

 

[DiscostewSM]

Oddly the SysModule caused Atmosphere to hang on Switch Logo. Don't know why, or just me.

Any other sys modules active?

 

[JonJaded]

Oddly the SysModule caused Atmosphere to hang on Switch Logo. Don't know why, or just me.

Disable sysftpd.

While there are builds that don't cause crashing/hanging, you should disable it prior.

 

[exelix11]

Do you think you can concatenate the network and usb sysmodules into one and instead have an NRO that interacts with the sysmodule to change the mode?

Yes eventually, currently there are two other things i'm focusing on for the next update.
There's already a branch merging the two sysmodules but i'm having troubles reinitializing USB after i've closed it and debugging that is way more annoying than the other two so unless other major bugs pop up this will be in the update after the next.

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

UPDATE: I had to install driver called libusb and it worked

I had different usb driver installed for goldleaf.




I have issues my switch is on and running a game and I checked if I can video capture it. everything is ok but I get error on usbstream.
I am using USB sysmodule.

I have the netcore 3.0.0 installed

Looks like wrong driver, as the device id is different this shouldn't confict with goldleaf or other homebrews, if you replaced their driver it's not actually going to be used for usbStream, read the updated readme and check that you're using the right device id.

 

[Something whatever]

So going try this

Thank sfor your hard Work

 

[Xyphoseos]

I type this
UsbStream video mpv ./mpv audio mpv ./mpv
But UsbStream.exe close itself, an Idea ?

The drivers is installed
In the environnment variable
PATH C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python38\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python37\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python37\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python36\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python36\;C:\Users\Xyphoseos\AppData\Roaming\npm;C:\mpv

 

[exelix11]

View attachment 183836
I type this
UsbStream video mpv ./mpv audio mpv ./mpv
But UsbStream.exe close itself, an Idea ?

The drivers is installed
In the environnment variable
PATH C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python38\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python37\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python37\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python36\Scripts\;C:\Users\Xyphoseos\AppData\Local\Programs\Python\Python36\;C:\Users\Xyphoseos\AppData\Roaming\npm;C:\mpv

Who told you to edit the environment variable ? just change the command with the path of mpv on your pc, from the screenshot it's UsbStream video mpv C:/mpv/mpv audio mpv C:/mpv/mpv (which is not an "usual" path, you could have just extracted everything downloads)

 

[Chrisssj2]

It works! awesome!

 

[tmiles]

Unhandled exception. System.ComponentModel.Win32Exception (2): O sistema não conseguiu localizar o ficheiro especificado.
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)

This is my problem. Someone know how to solve it?

 

[Jimbleton115]

this is very epic thanks

 

[defaq]

this is amazing! thank you !

 

[KajurN]

It works, BUT i'm having the issue of it repeatedly closing itself down after a while (less than 10 minutes, was also streaming it over discord for testing purposes if that matters). And that's on video only mode btw. Still, fantastic job. I've wanted something like this since i got my switch.

 

[Knash]

fixed i had written incorrect file path

 

[Chrisssj2]

Anyone know if there is an updated list for this?https://nintendo.fandom.com/wiki/List_of_Nintendo_Switch_games_that_support_video_capture

 

[exelix11]

Unhandled exception. System.ComponentModel.Win32Exception (2): O sistema não conseguiu localizar o ficheiro especificado.
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)

This is my problem. Someone know how to solve it?

Looks like you copied the example command without changing the mpv path with the one of your pc

It works, BUT i'm having the issue of it repeatedly closing itself down after a while (less than 10 minutes, was also streaming it over discord for testing purposes if that matters). And that's on video only mode btw. Still, fantastic job. I've wanted something like this since i got my switch.

Yes it's a known issue, it will be fixed in the next update soon.

 

[Chrisssj2]

Would there be a way to enable a game to stream that doesnt initially support streaming I wonder. Through modding?
For example like with the witcher. downscaling options so it uses less ram, then enabling streaming?

 

[Paffo]

Do you have ANY idea how much i waited for this?
I wanted this so bad i even tried implementing it myself, obv failing.
I asked on multiple Homebrew Discords which would be the best way to make this and their resposes were vague or none at all.
If this works, i thank you deeply.

 

[Andalitez]

Do you have ANY idea how much i waited for this?
I wanted this so bad i even tried implementing it myself, obv failing.
I asked on multiple Homebrew Discords which would be the best way to make this and their resposes were vague or none at all.
If this works, i thank you deeply.

Reports are that it works