Hey. So this teacher of mine gave me this homework to do:

Homework: Ø Using the object sigmund~ to control the velocity of the video using amplitude of a blowing sound into the microphone. Study the pix_film-help.pd file from Gem to play a movie file and the objects count-help.pd and metro-help.pd.

Consider it was just a single PD class in which we just learned the basics. Step by step, how do I do this?

@TOBuhrer I would start with the second part, which should be easy (count is from the cyclone library, but you can build a simple counter easily by yourself). Then I would ask the teacher what he means with velocity of the video. Then just connect a mic to sigmund~ and the env from sigmund to the velocity of the video. Edit: If I understand it right, the video velocity is in this case the amplitude controlled speed of the video?

@TOBuhrer Counter patch :

@TOBuhrer I just made a patch for this........ so.......
Things to consider.

1. The microphone volume...... after [sigmund~ env] you need to reduce the numbers arriving towards zero when you are not blowing....... maybe [-] with a fader on the right inlet.
2. You probably don't want to go backwards so stop negative numbers that could arrive because of step 1........ [moses 0]...... right outlet..... then into the counter.
3. You need to control the range of velocity change....... a [/] and another fader for that......... I put it after the the counter.
4. Best to send whole numbers (to send the frame number) into [pix_film] so [int] before it's right inlet.
5. Probably good to have the video loop...... so get the total frames from [pix_film] and reset the counter when it reaches that value.

@Boran-Robert's counter is fine..... very standard practice...... but you don't want the metro...... feed the volume after the [-] into it instead because you want the number to grow faster with more volume.
The video will drop frames as the speed increases...... which is a good solution and invisible to the eye.

Have fun......... and if you get desperate just ask and I will post the solution with some notes. Best you work on it so that you understand though.
David.

@Jona There s a video of a dandelion. When you blow the microphone the video is supposed to speed up to the scene when the dandelion unmake itself, as if you are actually blowing it.

@whale-av oh please post the solution. This is a nightmare already haha

@TOBuhrer Probably the solution.zip
Let us know why not though if it doesn't do what you want.
Make sure you understand it before you hand it over.
David.

the teacher sent us this hint

In front of zero he says "This is the value you should manipulate"

@TOBuhrer Please download from my post above again.......... it is late and I missed a bit out.......
The patch takes care of the number of frames automatically.
David.

@TOBuhrer Time for bed.
In case you only want it to run once and not depend on how hard you blow........ blow-me-once.pd
David.