[Spice-devel] spice-streaming-agent can't work correctly

[Snir Sheriber]

On 11/09/2018 02:58 AM, wangjiedong wrote:
> Yes, display 2 is showing the same content as display 1.
> I use spice-streaming-agent with the goal that it can make the video 
> more fluent and use less bandwidth, because in my condition classic 
> SPICE can't do well with playing HD video and use high bandwidth. I 
> think SPICE have resolution to deal with these especially in a WAN 
> environment.
>
> Developing streaming agent plugin is a good advice for me. I'll try it 
> and thank you !

Hi,

We have gstreamer based spice-streaming-agent plugin upstream, this 
should let you use
any mjpeg/vp8/vp9/h264 gstreamer encoder plugin to encode your captured 
desktop as a
video stream.
This plugin is not well tested and i do not know your exact 
configuration but if your guest has
assigned gpu you may even find a suitable hw accelerated gstreamer 
encoder plugin and this
potentially should work fairly well.

https://gitlab.freedesktop.org/spice/spice-streaming-agent/commit/f65cb5a84bb0fafec38cf738177a9f999211fdaf

Snir.

>
> ------------------ Original ------------------
> *From: * "Lukáš Hrázký"<lhrazky at redhat.com>;
> *Date: * Thu, Nov 8, 2018 06:27 PM
> *To: * "wangjiedong"<wangjiedong at kylinos.cn>; 
> "spice-devel"<spice-devel at lists.freedesktop.org>;
> *Subject: * Re: [Spice-devel] spice-streaming-agent can't work correctly
> Hello,
>
> On Thu, 2018-11-08 at 17:38 +0800, wangjiedong wrote:
> > Recently I compile spice-protocol-0.12.15 and 
> spice-server-0.14.1(--enable-lz4=yes --enable-gstreamer=yes 
> --enable-smartcard=yes --with-sasl=yes) on host Ubuntu 18.04, and 
> compile spice-protocol-0.12.15 and spice-streaming-agent-0.2 on guest VM.
> >
> >
> > I use remote-viewer to connect guest VM , and the command 
> spice-streaming-agent can exec successfully. then another 
> remote-viewer window named display 2 appears, and the video becomes 
> more stalling than never using spice-streaming-agent.
>
> Is the display 2 showing the same content as display 1?
>
> The second display is streaming your VM desktop using the MJPEG plugin.
> This uses SW encoding in the guest and SW decoding on the client, so
> it's adding significant CPU load and this use case has no actual
> practical benefit (classic SPICE performs better).
>
> I'm not sure what is your goal, but at this point, unless you want to
> develop your own streaming agent plugin, you probably don't want to use
> the streaming agent.
>
> Cheers,
> Lukas
>
> > What is the reason for this , any wrong configuration or something 
> wrong else?
> >
> >
> > Thanks for help !
> > _______________________________________________
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> > Spice-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/spice-devel
>
>
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