One way to generate a random number is to use a random patch with an
external timebase and a variability set to 1.
Feed a counter into the patch time of the random and fire a signal
into the counter each time you need a random number.
this may just be a bit less complicated (Though i like your style :)
Also, what do you mean by you cannot "make controlled dissolves back
and forth and also control the rest time of a video between the
dissolves?"
It seems like you could do this with an interpolator with loop set to
none whose time base is driven by a stop watch triggered by your note.
You could then move some of the logic from midiPipe into QC.
.xX
On May 8, 2006, at 1:42 PM, Daniel Bachmann wrote:
hi alessandro,
i use motion capturing on a webcam to trigger the dissolves, as i
cannot make controlled dissolves back and forth and also control
the rest time of a video between the dissolves i have decided to
control all values using applescript steering midipipe. it works
like a charm and i am very happy that this trick does its job well.
1. when a motion is detected, my applescript starts to work and
starts midipipe.
2. through applescript i tell midipipe to send a first note with
increasing velocity to dissolve from my base video to the
multiplexed random video. i can also control the time of the
dissolve through the programmed loop just by adding delay times for
every loop.
3. i send a note with full velocity to remain on the "ON" state of
the dissolve. again i use delay to control the resting time of the
multiplexed video.
4. i send a note with decreasing velocity and again a delay in the
loop to dissolve back to my base video.
5. i reset all notes to zero.
6. i send a note to reset a stopwatch controlling the random patch
that drives my multiplexer.
7. i send a note to start the stopwatch (random patch starts to work).
8. i send a note top stop the stopwatch (random patch is on a
random value and stays there)
now, when another motion is being detected, i have a new video that
has been randomly chosen as my multiplexed video :)
i hope i have explained not to fuzzy....
best regards,
daniel
Alessandro Sabatelli wrote:
Hi Daniel. I'm not sure i'm following. Why are you are using
applescript->midiPipe to control a dissolve?
.xX
On May 7, 2006, at 3:50 PM, Daniel Bachmann wrote:
thank you for the file MJ, it helped to get new ideas.
i now use an applescript controlling midiPipe, using a "for to"
loop increasing the velocity of a note to start the dissolve and
another loop doing the opposite to dissolve back. the random
chosen video i do control also through that script. good that i
can steer QC using MIDI. i do not think this would have been
possible without MIDI.
thank you for your fast answer again!
daniel
> right now i'm working
> on a patch for an opera play
> which just play's one movie
> and on cue it fades to the nest
> then again on cue to the next next
> etc
>
> i made the interface in max/msp
> this is a short of my own bog patch
> this is not exactly what you want
> maybe you can go on with this one
>
> with note 60 (quartz C5 but in real C3) i choose which movie
to run
> velocity 1 is move 1 vel 2 is 2 etc
> note 61 is starting of stopwatch triggering the non-looping
> interpolation to send time data to the movie,
> interpolation start with 0 end at the number of duration of the
movie
> in time of duration of movie
>
> interpolation at not looping so it stops at end
> with note 62 it reset the movie (reacts on velocity higher
than 64
> this is also for the start trigger)
>
> note 63 and 64 for second movie
> note 65 and 66 for third movie
>
> with note 67 i control the fading
>
> made this quick qc patch for this mail haven't tested it ....
>
> goodluck
>
> -MJ
>
>> hi,
>> i am new on the list and have a question about dissolving videos.
>>
>>
>> ---------------------------------------------------------------
>> here is the scenario:
>>
>> -i have one quicktime movie playing blue content. this is the
base video.
>>
>> -then i have 3 other videos (Red, Yellow, Green), the active of
>> those 3 is choosen by random.
>>
>> -i use MIDI to send notes to start transitions. my MIDI setup
works
>> and i get working MIDI signals into QC. see my MIDI signal like a
>> key pressed to start a video transition and another key
pressed to
>> dissolve back to the original video.
>> ---------------------------------------------------------------
>>
>> here what i want to happen:
>>
>> the basevideo loops continuosly for ever.
>>
>> when i send a MIDI signal (for example #C1) to QC i want to
dissolve
>>from the base video to one of the 3 other videos and stay there.
>> when i send another MIDI signal (for example #C2) i want to
dissolve
>> back to the base video and stay there.
>> ---------------------------------------------------------------
>>
>>
>> my problem is that i cannot figure out how to dissolve back and
>> forth between the base video and the randomly choosen video.
>>
>>
>> it looks simple but it comes out quite complicated. so if any
of you
>> could help me i would be very thankful.
>>
>> sorry for my english, i hope you can understand what i men to
do ;)
>>
>>
>> best regards,
>> daniel
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