On Tue, Jan 28, 2020 at 3:45 PM Ingo Brückl <i...@wupperonline.de> wrote:
>
> On a client notebook with integrated Intel UHD-Grafik 605 running Windows 10
> a video player complains that "it seems there is no Xvideo support for your
> video card available".
>
> And, indeed, xvinfo reports on the client:
>
>   $ xvinfo
>   X-Video Extension version 2.2
>   screen #0
>    no adaptors present
>
> So, is it VcXsrv which lacks the support or any of the X libraries? Is there
> anything that can be done about it, like loading a module or such?

No, it is x2goagent. It implements the xvideo extension. But Wikipedia states:

"In order for this to work, three things have to come together:

- The video controller has to provide the required functions.
- The device driver software for the video controller and the X
display server program have to implement the XVideo interface.
- The video playback software has to make use of this interface.

And I guess there's no "device driver software" that could take care
of the rendering. Which is kind of logical, as there's no hardware
within x2goagent.

I have not researched what is needed to make that work inside X2go (or
precisely: NX). but I also think it is not really worth the effort as
video is discouraged anyway because of performance issues.

Now, to help you: you might be able to instruct the video player to
ignore the extension. Another possibiliy is to switch it off in
x2goagent. You can achieve this by editing /etc/x2go/x2goagent.options
on the server side and change the line X2GO_NXAGENT_DEFAULT_OPTIONS=""
to X2GO_NXAGENT_DEFAULT_OPTIONS="-extension XVideo"

Then start a new session.

Uli


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