Forums > Jitter

Edirol Video Presenter

June 26, 2006 | 8:54 pm

Hi Jitter Forum!

I have been a MAX fan and Cycling74 fan for a long time. I am a musician and film-maker that would like to trigger video clips to multiple projectors via MIDI notes. I have looked at the Edirol Video Presentors that do this very well, but they are expensive. For example, for two projectors/2 screen presentations, about $10,000 or 2 Video presentors @ $5,000 each.

Wouldn’t this be an easy thing for Jitter and Max to do? Yet much cheaper. (For the cost of 2 laptops and jitter) I would like to be able to use 720X480 video or better. Ideally, 1080i quality. triggered via a sequencer. It would have to be frame acurate.

Please advise me if there is anyone in the forum that is doing a similar set-up

Thanks,
Garius Hill
producer NY


June 27, 2006 | 7:38 am

sure, very possible to do.
how difficult it can be depends mostly on what you mean by "frame-
accurate."

-evan


June 27, 2006 | 12:46 pm

Evan,

Thanks for your reply, it’s nice to hear from across the water. I thought it would be nice to do this with Jitter and Max. I would need it to be frame accurate because some of the video will be synced to the music (such as a vocalist singing with himself on stage with the video) if latency is consistent than the lag could be programed in. What do you think?


June 27, 2006 | 1:50 pm

It’s easily possible to get trigger latency of video down to < 8ms in
jitter by ‘pre rolling’ the first few frames to ram (or the whole clip if
you like. Triggering a loaded clip from a drive is typically 8-16ms
depending on the drive. below 8ms is a fairly imperceptable delay.

one suggestion on ‘lip syncing’ is to give your performer a video monitor,
and let him do compensation in ‘realtime’ :) — it’s probally a good idea
no matter what the latency is.

–deKam

> I would need it to be
> frame accurate because some of the video will be synced to the music (such
> as a vocalist singing with himself on stage with the video) if latency is
> consistent than the lag could be programed in. What do you think?


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