Doron Altaratz

I have a basic Jitter patch based on a Midi keyboard that triggers QuickTime video clips; each key stroke plays a different clip in the window. 

I want the video clips to slowly fade out to black after hitting a key on the keyboard about a couple of seconds after the key was hit, a bit like hitting one piano key and listening to the room harmonics slowly fade out into silent.

I have a basic Jitter patch based on a Midi keyboard that triggers QuickTime video clips; each key stroke plays a different clip in the window. 
I want the video clips to slowly fade out to black after hitting a key on the keyboard about a couple of seconds after the key was hit, a bit  like hitting one piano key and listening to the room harmonics slowly fade out into silent.

how-to-video-fade-out-over-time

Depends on your patch. You could jit.xfade to black, slowly set the

alpha of a video plane to 0 with blend_enable 1, jit.op @op * to 0 to

> I have a basic Jitter patch based on a Midi keyboard that triggers QuickTime video clips; each key stroke plays a different clip in the window.

> I want the video clips to slowly fade out to black after hitting a key on the keyboard about a couple of seconds after the key was hit, a bit like hitting one piano key and listening to the room harmonics slowly fade out into silent.

Depends on your patch.  You could jit.xfade to black, slowly set the
alpha of a video plane to 0 with blend_enable 1, jit.op @op * to 0 to
make the video go away etc. etc.

On 5/15/07, Doron Altaratz  wrote:
>
> I have a basic Jitter patch based on a Midi keyboard that triggers QuickTime video clips; each key stroke plays a different clip in the window.
> I want the video clips to slowly fade out to black after hitting a key on the keyboard about a couple of seconds after the key was hit, a bit  like hitting one piano key and listening to the room harmonics slowly fade out into silent.
>
> How do I do that?
>
> thanks.
>
>


But how do I make the video fade to black over a certain period of time, for example I want to make the video fade out to black gradually exactly 5 seconds after the user clicked the midi key. 

I want to tell Jitter to perform the fade out of the video automatically by itself, not by control of the user.

I guess I'm looking for some kind of an automatic transition system.

Thanks WES,
But how do I make the video fade to black over a certain period of time, for example I want to make the video fade out to black gradually exactly 5 seconds after the user clicked the midi key. 
I want to tell Jitter to perform the fade out of the video automatically by itself, not by control of the user.
I guess I'm looking for some kind of an automatic transition system.
Thanks
D.


have a look at the 'line' or 'bline' objects - they let you trigger a 

ramp of values from a start to an end point over a specified time.

> But how do I make the video fade to black over a certain period of 

> time, for example I want to make the video fade out to black 

> gradually exactly 5 seconds after the user clicked the midi key.

> I want to tell Jitter to perform the fade out of the video 

> automatically by itself, not by control of the user.

> I guess I'm looking for some kind of an automatic transition system.

have a look at the 'line' or 'bline' objects - they let you trigger a  
ramp of values from a start to an end point over a specified time.

>
> Thanks WES,
> But how do I make the video fade to black over a certain period of  
> time, for example I want to make the video fade out to black  
> gradually exactly 5 seconds after the user clicked the midi key.
> I want to tell Jitter to perform the fade out of the video  
> automatically by itself, not by control of the user.
> I guess I'm looking for some kind of an automatic transition system.
> Thanks
> D.


I have a patch on my website that demos how to use a floating num box with line to create a ramp (it's a little more useful than that, but that's the heart of it).

 and follow the link to "Max/MSP/Jitter Programming". Then, download "ike.gain~"

It's an audio-based example, but the logic should be clear and you can adapt it to stick with floating-point info.

You can then attach the output to a brcosa object or whatever object you want for the fade to black.

Go to http://www.hellbender.org and follow the link to "Max/MSP/Jitter Programming".  Then, download "ike.gain~" 

how to video fade out over time