Thanks for the notice, Eliot. 
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As Elliot said, we have archived our github fork of QGroundControl. The docs site is now located at https://docs.dwe.ai for any additional information you may be looking for.
Our QGroundControl fork has been replaced by a much more advanced streaming software called Discovery (Discovery - Stream and Record Network Video â DeepWater Exploration) which offers the ability to stream multiple cameras at extremely low latency if that is of interest to you.
@305155973 -
It is possible to stream both the standard Blue-ROV2 camera and a DWE camera in QGround Control, however you will only be able to switch between the video streams (with a jarring 1-2 second pause) not view at the same time. Cockpit does allow for multiple video streams, with picture in picture! Users like to setup one view with Camera A full screen and Camera B small, and a second view with the A and B stream size/location reversed - the switch between these two views is seamless!
Iâve not tried the DWE software but it may be possible to run in parallel with QGroundControl, although this does seem a bit awkwardâŠ
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Thank you, Brandon
Thanks very much, Tony. 
Iâm working on a project with a ground station showing real-time multi-streaming underwater videos only, without control an underwater vehicle. And Iâm thinking of using QGC instead of other video streaming softwares (VLC or OBS, etc) to keep consistent with my other projects.
For QGC, when you mentioned âswitch between the video streamsâ of a Blue-ROV2 camera and a DWE camera, do you mean to switch via âApplication settingâĄïžVideo SettingâĄïžvideo sourcesâ and choose among the list?
Or we can simply switch between multiple videos with easy UI operations like double clicking on the video?
I saw some people managed to layout 2 video views at the bottom of the main flight view in QGC , one on bottom left and the other bottom right. I guess I should work on editing the âFlightDisplayViewVideo.qmlâ file in the source code?
Hi @305155973 -
Our freshly launched Cockpit software may be of interest - it is open source and much easier to develop / modify than QGC.
With QGC and BlueOS / Ardusub, video streams can be switched between via game-controller button - not the path you mention.
Picture and picture is not possible in QGC as far as I know, Iâm not sure what you came across that indicated otherwise!
Thanks Tony. I will definitely download and try cockpit.
BTW, with QGC/ardusub, video streams can be switched between via game-controller button? I didnât know that.
I knew ROV flight modes can be switched between via the buttons on the control joystick. Maybe you can throw me a link on this? thank you
The joystick button functions are configurable. Switching video feeds is unrelated to the autopilot (so canât be set using the autopilot button parameters), but QGC provides a set of extra button functions that it can either handle locally or send a direct MAVLink message that a system may be able to handle.
I believe youâre after the âNext Video Streamâ / âPrevious Video Streamâ functions, although I did just try those (and the âNext Cameraâ / âPrevious Cameraâ ones) and wasnât able to get them to work. Iâm pretty sure they worked previously, so Iâve asked internally in case we know why that would have changed.
So youâre aware, QGC does also include support for sending custom MAVLink commands to the vehicle, but thatâs unrelated in this case.
Very interesting, Eliot. Thank you so much. Yes I am after the "âNext Video Streamâ / âPrevious Video Streamâ functions.
After checking the button parameters, it seems to me with BTNn_FUNCTION value set to 25 (camera_source_toggle), should do the video stream switch. I will definitely try to see how it works. I will update here if I get lucky:)
Iâve managed to confirm that this worked previously (back in BlueOS-1.1.1), but the functionality has somehow been broken since then. Iâve raised an issue where anyone interested can track progress as we investigate further and get this fixed
As I mentioned earlier, in ROV use-cases the autopilot is typically unrelated to the cameras (as compared to an FPV drone with no onboard computer, for example), so I donât expect any of the autopilot parameters to have any effect.
It would of course be interesting/useful if it does, but I assume the camera_source_toggle option is for when there is only one stream being sent from a vehicle with multiple cameras, and the autopilot is able to change which cameraâs stream is being transmitted.
In the case of BlueOS all the enabled streams are being transmitted, and itâs a QGC limitation to only be able to view one at a time, so we added some MAVLink functionality to BlueOS so that QGC can know about the available streams and let the user choose which one to display/record.
As per the earlier comments Cockpit does not have that limitation, and can display multiple streams at the same time