syncing many >100 video's by mark(?)

Sep 8, 2008 at 3:58pm

syncing many >100 video's by mark(?)

can anyone help me find the right way to sync >100 video’s?
i have to put a mark(sync point) in each video (in different places) and they will start at different times and eventually sync at this point. all placed in a matrix/grid…
right now i’m doing it in finalcut which is slow and tedious. the job is very algorithmic in nature so maybe jitter would make it easier for me…

…and this is just the demo the original will contain >4000 videos, and the number growing…

kind regards,
eske

#39611
Sep 8, 2008 at 5:14pm

i’m assuming your intention is to render this offline.
i’ve never personally done something like this, but it sounds completely within the capabilities of jitter.

(assuming you’ve already spent a few weeks doing the max and jitter tutorials), you are either going to want to do this in javascript or java, or using poly~ for movies (check the jitter examples folder).

not sure how you’re doing your syncing, but i’m sure you could come up with method in max. if you want to be more descriptive of how it’s supposed to work, you may get better advice.

#139653
Sep 8, 2008 at 6:11pm

the end result will be a black screen which square by square will be filled out with a video. at one time all the different videos will play the same audio “bite” this is the sync point!, after that each videos will play out. and we are left with black again. and no sound…

all videos play at their original speed, they just start at different times to fit the sync point…

i’m gonna render it offline offcourse. but it as to be flexible so i can add videos…

i haven’t done jitter yet, only maxmsp. but i thought maybe others have had the same problem. marking a sync point in each video.

#139654
Sep 8, 2008 at 7:52pm

seems like a possible solution is to store the “sync point” as the poster frame in each quicktime movie. you can retrieve this vaule using “getposter” message to qt.movie, and do some simple math to determine what movies should start when.

#139655
Sep 9, 2008 at 4:31pm

thanks for the help rob, im on the way now!!!

just did this…
check attached maxpat file.

#139656
Sep 15, 2008 at 10:15am

performance seems pretty hard for this machine.
(even though it’s a 2X2.66 dualcore, 4gb 667mhz ram…)
right now im running 16 mov through jit.glue. it looks good. but the updating is too slow… i trid to slow down playspeed but it did’nt help…

any tips?

cheers,
eske

#139657

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