[Spice-devel] KVM-SPICE: View youtube videos smoothly

[Frediano Ziglio]

It's not a small addition. Usually wifi has a much higher latency then wired lan. For comparison on lan usually you 
have 2-4 ms latency while on wifi 80-100 ms unless you have powerful and quite idle network infrastructure 
(but still higher than wired). 

Unfortunately currently the protocol implementation is quite latency dependent. 

I don't think the latency here is an issue if you are using a recent encoder (here some client 
guy should help on how to know the encoder used). 

About the lag recently we detected another issue in the protocol implementation, hope 
we can tune and fix it in a short period. 

Frediano 

> I'd like to add that the connection is via wi-fi (54Mbps).

> Is it enough for spice videos?

> thanks a lot.

> 2017-03-08 19:14 GMT+01:00 Oscar Segarra < oscar.segarra at gmail.com > :

> > Hi,
> 

> > Youtuve videos from virt-manager (locally) has an acceptable bejaviour...
> > but
> > If I try to connect from the LAN, the behaviour is not acceptable... the
> > sound goes much faster than the image.
> 

> > I have increased the video memory up to 64MB but I have not experienced any
> > improvement.
> 

> > Is there any way to diagnose this lag problems?
> 

> > Thanks a lot.
> 

> > 2017-03-03 22:45 GMT+01:00 Oscar Segarra < oscar.segarra at gmail.com > :
> 

> > > Hi,
> > 
> 

> > > After some research, I have been able to install a newer version from:
> > 
> 

> > > https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.133-1/
> > 
> 

> > > Now, Video has experienced a nice improvement... but sound still
> > > "hangs"...
> > 
> 

> > > Is there any advice to customize sound?
> > 
> 

> > > Thanks a lot.
> > 
> 

> > > 2017-03-03 21:45 GMT+01:00 Pavel Grunt < pgrunt at redhat.com > :
> > 
> 

> > > > On Fri, 2017-03-03 at 20:19 +0100, Oscar Segarra wrote:
> > > 
> > 
> 
> > > > > I must say the version is weird.
> > > 
> > 
> 
> > > > > It is the version that comes with 2K8. I have not been able to find
> > > 
> > 
> 
> > > > > the W10 qxl driver... ¿Can you paste the link?
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > It is on our page
> > > 
> > 
> 
> > > > https://www.spice-space.org/download.html#windows-binaries
> > > 
> > 
> 

> > > > Windows QXL-WDDM-DOD driver
> > > 
> > 
> 

> > > > > Beside that which versions (kvm, spice) are you using? Are you using
> > > 
> > 
> 
> > > > > a recent viewer?
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > qemu-kvm.x86_64 10:1.5.3-126.el7
> > > 
> > 
> 
> > > > > @base
> > > 
> > 
> 
> > > > > qemu-kvm-common.x86_64 10:1.5.3-126.el7
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > spice-glib.x86_64 0.31-6.el7
> > > 
> > 
> 
> > > > > @base
> > > 
> > 
> 
> > > > > spice-gtk3.x86_64 0.31-6.el7
> > > 
> > 
> 
> > > > > @base
> > > 
> > 
> 
> > > > > spice-protocol.noarch 0.12.11-1.el7
> > > 
> > 
> 
> > > > > @base
> > > 
> > 
> 
> > > > > spice-server.x86_64 0.12.4-19.el7
> > > 
> > 
> 
> > > > > @base
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > Regarding to the viewer version:
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > remote-viewer.exe version 5.0-256
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > Thanks a lot!
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > 2017-03-03 18:04 GMT+01:00 Frediano Ziglio < fziglio at redhat.com >:
> > > 
> > 
> 
> > > > > > Hi,
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > In my environment I have a W10 guest running on a centos 7 KVM
> > > 
> > 
> 
> > > > > > host.
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > I have installed the following QXL Video driver:
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > But when I try to see (on LAN) a youtube video, it doesn't play
> > > 
> > 
> 
> > > > > > smoothly, even video and sound stops for a while and continues a
> > > 
> > 
> 
> > > > > > little bit later. It looks I can see the video rendering as i can
> > > 
> > 
> 
> > > > > > see a the half of one frame and the half of the following frame on
> > > 
> > 
> 
> > > > > > the same "image".
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > If I minimize the internet explorer (or chrome) to the task-bar
> > > 
> > 
> 
> > > > > > image and sound goes better (not the perfect).
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > ¿Is there any advice to improve video and sound experience in KVM
> > > 
> > 
> 
> > > > > > with spice?
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > Thanks a lot,
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > I must say the version is weird.
> > > 
> > 
> 
> > > > > > We released a Windows 10 driver not much ago.
> > > 
> > 
> 
> > > > > > Beside that which versions (kvm, spice) are you using? Are you
> > > 
> > 
> 
> > > > > > using a recent viewer?
> > > 
> > 
> 
> > > > > > New versions implements different code which requires less
> > > 
> > 
> 
> > > > > > bandwidth (should not
> > > 
> > 
> 
> > > > > > be a big problem with LAN but you would make sure).
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > > Frediano
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > > >
> > > 
> > 
> 
> > > > >
> > > 
> > 
> 
> > > > > _______________________________________________
> > > 
> > 
> 
> > > > > Spice-devel mailing list
> > > 
> > 
> 
> > > > > Spice-devel at lists.freedesktop.org
> > > 
> > 
> 
> > > > > https://lists.freedesktop.org/mailman/listinfo/spice-devel
> > > 
> > 
> 
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