[jitsi-users] Jitsi screen sharing resolution


#1

Hi,

I'm using Jitsi 1.1 nightly build 3986.

My Jitsi video settings are:
- resolution: 160x100
- fps: 5
- 100 kBs

These settings don't seem to affect screen sharing. Am I right?
It seems to me that screen sharing is always performed with the same hard-coded parameters. I'm saying this because while a video call with these settings within a LAN is acceptable (fluid video, almost no latency between audio and video, etc.), screen sharing under the same conditions, isn't. Screen refresh is very slow.

Is there a way to change the screen sharing screen settings to make it flow faster (like in a VNC connection)?

Thanks,

Vieri


#2

Hey Vieri,

···

On 10.04.12 18:48, Vieri wrote:

Hi,

I'm using Jitsi 1.1 nightly build 3986.

My Jitsi video settings are:
- resolution: 160x100
- fps: 5
- 100 kBs

This one's too low. I'd recommend bumping it to at least 256. At least.

Emil


#3

Thanks Emil.
Now both video from webcam and from desktop (screen sharing) are fluid and work fine.
There's just one glitch: screen sharing becomes really slow when activating "remote administration". If the local user moves the mouse, etc, then screen share is fluid. However, if the remote user moves the mouse and does something then screen sharing is extremely slow.

By the way, "remote administration" only seems to work if using Jabber. It doesn't allow the remote user to do anything if using SIP.

Another question: why can't I set less than 5 fps? As far as screen sharing is concerned, maybe 1 or 2 fps would be enough?

Vieri

···

--- On Tue, 4/10/12, Emil Ivov <emcho@jitsi.org> wrote:

Hey Vieri,

On 10.04.12 18:48, Vieri wrote:
> Hi,
>
> I'm using Jitsi 1.1 nightly build 3986.
>
> My Jitsi video settings are:
> - resolution: 160x100
> - fps: 5
> - 100 kBs

This one's too low. I'd recommend bumping it to at least
256. At least.


#4

Hey Vieri,

Hi,

I'm using Jitsi 1.1 nightly build 3986.

My Jitsi video settings are: - resolution: 160x100 - fps: 5 - 100
kBs

This one's too low. I'd recommend bumping it to at least 256. At
least.

Thanks Emil. Now both video from webcam and from desktop (screen
sharing) are fluid and work fine. There's just one glitch: screen
sharing becomes really slow when activating "remote administration".
If the local user moves the mouse, etc, then screen share is fluid.
However, if the remote user moves the mouse and does something then
screen sharing is extremely slow.

I am not sure I understand what you mean by "slow". Do you mean there's
added latency?

By the way, "remote administration" only seems to work if using
Jabber. It doesn't allow the remote user to do anything if using
SIP.

It work for both XMPP and SIP. However, if you are using asterisk, it
won't let the event messages pass through.

Cheers,
Emil

···

On 11.04.12 09:30, Vieri wrote:

--- On Tue, 4/10/12, Emil Ivov <emcho@jitsi.org> wrote:

On 10.04.12 18:48, Vieri wrote:


#5

> Thanks Emil. Now both video from webcam and from
desktop (screen
> sharing) are fluid and work fine. There's just one
glitch: screen
> sharing becomes really slow when activating "remote
administration".
> If the local user moves the mouse, etc, then screen
share is fluid.
> However, if the remote user moves the mouse and does
something then
> screen sharing is extremely slow.

I am not sure I understand what you mean by "slow". Do you
mean there's
added latency?

Yes. When the remote user moves the mouse (say, a simple 1 inch movement), it can take up to 5 seconds to perform on the PC that's sharing its desktop.

However, if the local user (at the PC that's sharing its desktop) moves the mouse, the remote party sees the event quite quickly (1 second at most).

> By the way, "remote administration" only seems to work
if using
> Jabber. It doesn't allow the remote user to do anything
if using
> SIP.

It work for both XMPP and SIP. However, if you are using
asterisk, it
won't let the event messages pass through.

Do you happen to know if there's a workaround for this in Asterisk?

Thanks,

Vieri

···

--- On Wed, 4/11/12, Emil Ivov <emcho@jitsi.org> wrote:


#6

Thanks Emil. Now both video from webcam and from

desktop (screen

sharing) are fluid and work fine. There's just one

glitch: screen

sharing becomes really slow when activating "remote

administration".

If the local user moves the mouse, etc, then screen

share is fluid.

However, if the remote user moves the mouse and does

something then

screen sharing is extremely slow.

I am not sure I understand what you mean by "slow". Do you mean
there's added latency?

Yes. When the remote user moves the mouse (say, a simple 1 inch
movement), it can take up to 5 seconds to perform on the PC that's
sharing its desktop.

However, if the local user (at the PC that's sharing its desktop)
moves the mouse, the remote party sees the event quite quickly (1
second at most).

Well. It sounds like the latency is coming from the relaying of the
remote control XMPP IQs.

Once we have pseudo tcp, this should get better.

By the way, "remote administration" only seems to work

if using

Jabber. It doesn't allow the remote user to do anything

if using

SIP.

It work for both XMPP and SIP. However, if you are using asterisk,
it won't let the event messages pass through.

Do you happen to know if there's a workaround for this in Asterisk?

I don't think so. The Asterisk folks keep reminding people that it's not
a proxy, it's a user agent.

You may try fronting it with a Kamailio or another SIP proxy.

Cheers,
Emil

···

On 11.04.12 10:00, Vieri wrote:

--- On Wed, 4/11/12, Emil Ivov <emcho@jitsi.org> wrote:

Thanks,

Vieri

--
Emil Ivov, Ph.D. 67000 Strasbourg,
Project Lead France
Jitsi
emcho@jitsi.org PHONE: +33.1.77.62.43.30
http://jitsi.org FAX: +33.1.77.62.47.31


#7

You can try sipXecs (www.sipfoundry.org)... it is a proxy and also has
openfire...

···

On Wed, Apr 11, 2012 at 7:46 AM, Emil Ivov <emcho@jitsi.org> wrote:

On 11.04.12 10:00, Vieri wrote:
>
> --- On Wed, 4/11/12, Emil Ivov <emcho@jitsi.org> wrote:
>
>>> Thanks Emil. Now both video from webcam and from
>> desktop (screen
>>> sharing) are fluid and work fine. There's just one
>> glitch: screen
>>> sharing becomes really slow when activating "remote
>> administration".
>>> If the local user moves the mouse, etc, then screen
>> share is fluid.
>>> However, if the remote user moves the mouse and does
>> something then
>>> screen sharing is extremely slow.
>>
>> I am not sure I understand what you mean by "slow". Do you mean
>> there's added latency?
>
> Yes. When the remote user moves the mouse (say, a simple 1 inch
> movement), it can take up to 5 seconds to perform on the PC that's
> sharing its desktop.
>
> However, if the local user (at the PC that's sharing its desktop)
> moves the mouse, the remote party sees the event quite quickly (1
> second at most).

Well. It sounds like the latency is coming from the relaying of the
remote control XMPP IQs.

Once we have pseudo tcp, this should get better.

>>> By the way, "remote administration" only seems to work
>> if using
>>> Jabber. It doesn't allow the remote user to do anything
>> if using
>>> SIP.
>>
>> It work for both XMPP and SIP. However, if you are using asterisk,
>> it won't let the event messages pass through.
>
> Do you happen to know if there's a workaround for this in Asterisk?

I don't think so. The Asterisk folks keep reminding people that it's not
a proxy, it's a user agent.

You may try fronting it with a Kamailio or another SIP proxy.

Cheers,
Emil
>
> Thanks,
>
> Vieri
>
>

--
Emil Ivov, Ph.D. 67000 Strasbourg,
Project Lead France
Jitsi
emcho@jitsi.org PHONE: +33.1.77.62.43.30
http://jitsi.org FAX: +33.1.77.62.47.31

--
There are 10 kinds of people in this world, those who understand binary and
those who don't.

mpicher@gmail.com
blog: http://www.sipxecs.info
call: sip:mpicher@sipxecs.info