Fw: [AG-TECH] ScreenStreamer

[Natalia Costas Lago]

 The CPU is 20% loaded, but i'm still not able to get a frame rate faster
 than a couple of frames per second.

 That's using JPEG, using h261 or h263 the screen looks terrible (very bad
 quality even when quality is set to 95-100%).

>
> ----- Original Message ----- 
> From: "Andrew Rowley" <Andrew.Rowley at manchester.ac.uk>
> To: "'Natalia Costas Lago'" <natalia at cesga.es>; "'ag-tech'" 
> <ag-tech at mcs.anl.gov>
> Sent: Wednesday, June 01, 2005 3:13 PM
> Subject: RE: [AG-TECH] ScreenStreamer
>
>
>> Hi,
>>
>> The screen update rate is currently dependant on the power of the machine 
>> it
>> is running on.  This is due to the high processing required to capture 
>> the
>> screen and because it does not currently update only the changes.  I
>> sometimes find that if your machine is only getting 1fps, try setting the
>> rate lower.  This will reduce the amount of processing required, and may
>> allow slightly faster transmission (e.g. set the rate to 2 - if this does
>> not help try 1.5).
>>
>> To address your second point, Java Web Start caches the application for 
>> use
>> offline (just run javaws without any command line options).  The main
>> problem with this is that this will only allow you to access the last 
>> venue
>> that you used.  You can actually download the application if you are 
>> worried
>> about this happening.  The url for this is
>> http://www.memetic-vre.net/software/ScreenStreamer/ScreenStreamer.jar. 
>> The
>> argument is of the form address/port/ttl where address is the address to
>> send to and/or receive from, port is the port number and ttl is the ttl 
>> to
>> send with.
>>
>> I will take this into account when I update the toolkit service (which is
>> currently a bit of a hack) - I would guess that I will create two 
>> versions
>> which you can choose depending on preference.  The first will have the 
>> Jar
>> file included (and hence will need manually updating when a new version 
>> is
>> released), and the second will download from the server.
>>
>> The idea of the web launch, in case you are interested, is so that I can
>> update ScreenStreamer and then you will get the latest version without
>> having to do anything.  This way, there will never be incompatibility 
>> issues
>> between different versions of the software.  However, I do see your point
>> about the website being down at any point.
>>
>> Andrew :)
>>
>> ============================================
>> Access Grid Support Centre,
>> RSS Group,
>> Manchester Computing,
>> Kilburn Building,
>> University of Manchester,
>> Oxford Road,
>> Manchester,
>> M13 9PL,
>> UK
>> Tel: +44(0)161-275 0685
>> Email: Andrew.Rowley at manchester.ac.uk
>> ________________________________________
>> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] On 
>> Behalf
>> Of Natalia Costas Lago
>> Sent: 01 June 2005 13:07
>> To: ag-tech
>> Subject: [AG-TECH] ScreenStreamer
>>
>>
>>
>> Dear all,
>>
>>
>> I've tested this application and it seems really great for us to record 
>> an
>> event (video+audio+dektop). But i've found two main trouble:
>>
>> 1.- It seems the frames per second parameter can be set. However my 
>> screen
>> only changes every second (i loose all pointer movements, etc), doesnt
>> matter fps=2.5 or fps=25.
>>
>> 2.- I am able to launch the application from memetic website, but .. what
>> happens if memetic is down?. I cant start it by my own.
>>
>> Maybe someone could tell me if there is any solution for these issues?
>>
>> Thanx in advance,
>> Kind regards.
>>
>> -----------------------------------
>> Natalia Costas Lago
>> email: natalia at cesga.es
>>
>> Centro de Supercomputacion de Galicia (CESGA)
>> Avenida de Vigo, s/n Campus Sur
>> 15706 Santiago de Compostela - SPAIN
>> Tel: +34 981 56 98 10
>> Fax: +34 981 59 46 16
>> http://www.cesga.es/
>>
>>
>>
>>
>