Testing for QT effects on Windows systems

[Klaus Major]

Hi Swami,

> ...
> This leads one to ask:
>
> 1) Assuming one uses (in my case) only "dissolve" and "wipe" 
> throughout the presentation...
> (I will eliminate the "cross fade") will Windows users still get a 
> demand to install QT if one has
> not set the  "dontUseQTEffects" to true? Or, was my single instance of 
> "cross fade" the cause for this?

Yes, but RR will use QT for the dissolve effect if QT is installed.
You could "set the dontuseqt to true" to eliminate the use of QT at all

> 2) Obviously querying the platform first makes the best sense... so, 
> if QTeffect is not installed on a windows system will
> put QTeffects()
> just return empty on a system that does not have QT installed?
> If so, then one assumes this will be the optimum thing to do, to trap 
> for this problem...
> if (QTeffects()="") then set the dontUseQTEffects to true

I would check for an appropriate version of QT at all, which i usually 
do:

if char 1 of the qtversion < 5 then
     answer "How do YOU spell multimedia, buddy?"  ## ;-)
    set the dontuseqt to true
   ...
end if
## Only version 5 or greater will support all "modern" effects and 
fileformats ;-)

> But then is this really necessary if only built in Rev visual effects 
> are used?

Not really ;-)

But why not be sure and "set the qteffects to false"?

> 3) And does this mean that a windows user with Windows Media Player 
> Classic
> who has the Quicktime codex installed can in fact run any Rev player 
> (sound or movie)?

On startup RR will look for QT and use it for audio/video playback and 
the dissolve effect,
unless you tell RR NOT to do so...

Hope that helps a bit...

> tia
> Sannyasin Sivakatirswami

Regards

Klaus Major
klaus at major-k.de
www.major-k.de