Video Librarys (Was: [PD] [Newbie] Hello…)

B. Bogart ben at
Sun Nov 6 21:24:49 CET 2005

Hi Paul,

Ok 1 projector, that makes things a little easier.

9 videos is a lot, I have never done that many on one machine. Chris
Clepper mentioned getting 3 DV videos playing on his laptop in Gem. When
you say DV downgraded to 33% what does this actually mean? Compression
quality of the size of the image?

I would suggest Gem as a good way of getting lots of video data onto the
screen without fancy filters or pixel effects.

for codecs I would experiment, but like I said I'm pretty DV is limited
to video resolution (NTSC or PAL).

Try 9 160x120 video clips and see how well that works.

You may need to spread them clips over multiple drives (which for you
means external firewire) to get the right disk bandwidth.

jpeg-codec is a good start since it sounds like you are interested in
some frame accuracy...

Good luck.


Paul Sellis wrote:
> Thank you for your answers Ben and Mathieu.
> *** 4 nov. 05 at 14:44, B. Bogart wrote :
>> How many projectors?
> for this project only 1.
> But I'd like to learn a software which can synchronize more (lets say  3
> or 4…).
>> DV codec (I think) is only ever 720x480 NTSC, can't be downgraded, you
>> would need to encode in a different format to get a different size.
>> So what codec, what size?
> It's a DV Pal (so 720x576) downgraded at 33%. I did it (and the hole
> sequence…) in Flash and ActionScript with the new Flash video codec.
> The animation works fine. The only problem is that I am obliged to  use
> external video (not embeded) so with Flash I must  use FLV. And  the
> quality seems not to be sufficient  for video projections.
> In this case, I don't know if it's possible to do each of these 9
> movies with no compression (I don't think so with my laptop…). Which
> codec would you recommand to me ?
>> Interactive video or just video playback?
> In this case it would be just video playback
>> What HW are you planning to use?
> My Apple G4 PowerBook 1,25GHz (???…)
>> I would not suggest jitter for such a project as far as I imagine
>> putting straight video up... softVNS would be be my second suggestion
>> after pd/Gem Linux/OSX.
> I don't know "soft VNS"…
> Is there a kind of "reference chart" where abilities and weakness of
> each solution is displayed.
> it seems to be a kind of maze for me now…
> :-((
>> Performance or installation?
> In this case an installation.
> But I have opportunities to work for performances…
> I'd like to learn a soft (Max/MSP, PD,…) which could be great for all
> this…
> (doesn't seems to be the case…)
>> How long will it run?
> Up to 9 minutes. Looping.
> Each movie begins at a random point between the begining and the end  of
> its duration.
> It will be placed in a place choosen between 9 possible places (next
> between the 8 remaining places, and so on…).
> Everyboby plays until the end and wait x seconds after the last movie
> has finished. Then the whole thing loops.
>> Video playback or seeking?
> Video playback not streaming (was it what you were talking about ?)
> I'm quite lost with the possibilities of Max/MSP, PD (or soft VNS…).
> I don't even know if that's possible to do that kind of things.
> I only know that it works fine in Flash with Actionscript…
> *** 4 nov. 05 at 18:52, Mathieu Bouchard wrote :
>> If you are going to do any effects on those videos in realtime you
>> should
>> say what you want to do because Gem differs very much from Jitter.
> No effects in realtime on these videos. Only playback…
> Your advises are more than welcome.
> ;-))
> PAul
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