vj

I am looking for a good way to "scratch video" in QC. By scratch, I mean analogous to Dj scratching in that one can alter the speed, position, and direction of a video on the fly using some fader, rotary, or other controller.

I have looked around, and it seems as though dust made it pretty good with his approach but I found no file to dive into. http://kineme.net/forum/Programming/bestapproachtovideoscratchplugin

The internet hints at using some sort of queue system to drive the video's position from what I have gathered.

Of course, if I hook up the mouse input to the rate, or selection start, the video becomes choppy. I know there is a good way to do this.

If someone could point me in the right direction that would be much appreciated

I have been using Quartz extensively for playing back loops, adding effects, etc, and I was wondering what the fastest video coedc would be for playback in Quartz Composer?

The clips are usually played at 720, but that may be irrelevant. I have been using video programs, so converting them to any codec is not the problem, but there are so many options I was not sure which would be the most tailored to QC - H.264, ProRes, etc

so just a headz up to anybody in the land of swiss or geneva. there is a pretty cool festival i have some of my quartz composer work. here is a link. i thought some vj's in europe might find this interesting.

http://www.mappingfestival.ch/2010/

you will see my piece is projected on ice blocks. basically one of my professors had got in a car accident and has got brain damage, so i have been working with help helping get his memory etc back... so his idea for the piece was originally to be 4 sided projected on a block of ice.

now there seems to be a shortage of ice in switzerland ???? so now its a two sided piece as switzerland exports their ice to china or something ??? to get a cubed wall of ice in switzerland i guess costs 4k or something and is sent from new england in america. so right now we are trying to construct an alternative.

but the basic idea was to have mri - cat scans and angiograms projected on the 3 sides of the ice to represent the brain loss of memory etc.. then in the front we are projecting a quartz file that has a video of my professor telling his story. in another room there is a camera where people tell their memories and their images and audio get intertwined with original story and sent out to the projected art piece.

the tech is qc, max, and opencv. open cv is to detect when someone is present telling a memory to the camera and snaps image fragments and audio samples that get over layed with each other.

im not sure how it will turn out as it was basically thrown together in one night. but the idea to have all these randomized sequences of audio samples in different languages as well as image samples is pretty powerful in concept. we will have to see in implementation.

has anyone else ever projected on to ice or done anything similar to this in respects to av randomizations etc.. im still getting used to randomized art.

here is a pic of the qc file. so yeah just wanted to give anybody in the land of swiss a heads up etc...

you will have to let me know how this turns out as i'm remote conference to switzerland. im a little worried hopefully we will be able to sort out the ice.