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

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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.

 

[exelix11]

And it's out, download and full changelog on github: https://github.com/exelix11/SysDVR/releases

 

[Phenj]

And it's out, download and full changelog on github: https://github.com/exelix11/SysDVR/releases

Awesome update! Also, USB-stream while docked isn't a thing yet, right?

 

[enderer]

been messing with this all day, tweaked some settings and got it to run wireless audio + video basically perfect! ~1sec delay.
--cache=no --cache-secs=0

thank you so much!

 

[exelix11]

Awesome update! Also, USB-stream while docked isn't a thing yet, right?

Nope, switch OS doesn't support USB client mode when docked so no way around it, good news is that network streaming via wireless now is pretty reliable so can be a good alternative (assuming good wifi reception on both sides)

 

[skullkeeper94]

Is it better to use USB streaming or network on a low end PC? Neither is too terribly an issue but don't want to waste time when I could have a much better result the other way.

 

[exelix11]

Is it better to use USB streaming or network on a low end PC? Neither is too terribly an issue but don't want to waste time when I could have a much better result the other way.

Unless it's some very old win XP machine i'd say it doesn't really matter, connection quality is what matters if you're connected via LAN or wifi with very good reception network should work too. USB often offers the best quality cause it's a direct Switch to PC connection while with network you likely have a router in between.

 

[PatrickD85]

Hmmm interesting, interesting, still I even hardly take the time to connect my Elgato HD60.
Probably should do more with that ... but im just not great when it comes to video content at all..
But might give this a try over the weekend

 

[DiscostewSM]

This is amazing. Installed it, got mpv set up with some batch scripts to automatically stream/record to my laptop, and was ready to use immediately. I do have a question though, but it does not pertain to SysDVR, but to mpv. So while I can record with --stream-record=video.mkv, the audio from the stream itself is uncompressed PCM. Could I set mpv to encode the audio to another format while it streams for the recording?

 

[uyjulian]

This is amazing. Installed it, got mpv set up with some batch scripts to automatically stream/record to my laptop, and was ready to use immediately. I do have a question though, but it does not pertain to SysDVR, but to mpv. So while I can record with --stream-record=video.mkv, the audio from the stream itself is uncompressed PCM. Could I set mpv to encode the audio to another format while it streams for the recording?

You can put RTSP stream as input for ffmpeg, encoding it to whatever you want with ffmpeg's options.

 

[exelix11]

Hmmm interesting, interesting, still I even hardly take the time to connect my Elgato HD60.
Probably should do more with that ... but im just not great when it comes to video content at all..
But might give this a try over the weekend

Well if you have a capture card this is a pretty cool POC, but it will never perform as good as that, guess you have the option of streaming wireless but it's lower quality than a physical capture card.

This is amazing. Installed it, got mpv set up with some batch scripts to automatically stream/record to my laptop, and was ready to use immediately. I do have a question though, but it does not pertain to SysDVR, but to mpv. So while I can record with --stream-record=video.mkv, the audio from the stream itself is uncompressed PCM. Could I set mpv to encode the audio to another format while it streams for the recording?

Not sure, as the user above me said you can use ffmpeg to receive the stream and encode it but then you won't be able to watch it in real time (Direct RTSP mode supports max 1 client, RTSP from usb/TCP Bridge supports multiple but i woudln't recommend it) For recording I tested OBS, instead of stream you click on record and it works just fine.

 

[PatrickD85]

Sure it's not dedicated hardware but I still like to look into software solutions every now and again
But like I said ... I hardly actually record.

PS: Not discrediting your amazing efforts in any way, I still see a lot of potential use cases for it

 

[enderer]

loving this! just got everything in OBS set up for recording/streaming. not gonna shamelessly self-promote, but let's just say i'll be streaming everytime i'm playing from now on.

 

[Nevercholt]

Awesome work mate! I've a video scheduled for tomorrow But for a 720p 30 fps stream it's quite good quality

 

[xiaoming]

emmmmmm
i really hope it can run in sxos

 

[Aqib]

Can someone please provide a clear and explicit linux guide, I have been trying to get this to run and can't seem to get it to work. I would greatly appreciate it if someone could make a video guide for sysdvr on linux. Please help me!

 

[exelix11]

Can someone please provide a clear and explicit linux guide, I have been trying to get this to run and can't seem to get it to work. I would greatly appreciate it if someone could make a video guide for sysdvr on linux. Please help me!

Unforuntaly linux comes in a lot of different versions, your best bet would be to google your issues with the distro name as a keyword, generally the only thing that creates issues is the USB driver, abetter explaination about the USB setup is on the libusb page on github. TCP Bridge should work fine as long as you setup .NET core.

 

[JasNotDead]

Hello, does anyone know why I keep getting this error?


Starting stream, press return to stop
If the stream lags try pausing and unpausing the player.
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
at SysDVRClient.RTSP.SysDvrRTSPTarget.InvokeEvent(Memory`1 Data, UInt64 tsMsec)
at SysDVRClient.RTSP.SysDVRVideoRTSPTarget.SendData(Byte[] indata, Int32 offset, Int32 size, UInt64 ts)
at SysDVRClient.IOutTarget.SendData(Byte[] data, UInt64 ts)
at SysDVRClient.VideoStreamThread.StreamInitialized()
at SysDVRClient.RTSP.SysDvrRTSPTarget.InitializeStreaming()
at SysDVRClient.StreamThread.MainLoop()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Now streaming via RTSP on port 6666
Connect with your player to rtsp://127.0.0.1:6666/

 

[exelix11]

Hello, does anyone know why I keep getting this error?


Starting stream, press return to stop
If the stream lags try pausing and unpausing the player.
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
at SysDVRClient.RTSP.SysDvrRTSPTarget.InvokeEvent(Memory`1 Data, UInt64 tsMsec)
at SysDVRClient.RTSP.SysDVRVideoRTSPTarget.SendData(Byte[] indata, Int32 offset, Int32 size, UInt64 ts)
at SysDVRClient.IOutTarget.SendData(Byte[] data, UInt64 ts)
at SysDVRClient.VideoStreamThread.StreamInitialized()
at SysDVRClient.RTSP.SysDvrRTSPTarget.InitializeStreaming()
at SysDVRClient.StreamThread.MainLoop()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Now streaming via RTSP on port 6666
Connect with your player to rtsp://127.0.0.1:6666/

How are you launching SysDVR-Client ? In fact there seems to be a possible race condition but i think it would be hard to consistently triggering it. Can you try launching Client, waiting a few secs and then launching mpv ?

 

[SoraNotHere]

Help! I keep getting Video/Audio Thread terminated due to ExtendedSocketException when trying to use network mode, as for USB mode, I can't install libusb because Zadig freezes and then crashes when I click Install Driver. I checked if I set everything up correctly and I did, but nothing is working

 

[Txustra]

I guess having 2-3 seconds delay is a normal thing, isn't it?