Thank you for that valuable information. I just spioke to the council officer and he was suprised about my questions. Seems no other businesses he asked for quotes wre concerned about output quality.

LG

At that screen size, it would be a shame to use a standard definition DVD (unless it's a low-resolution lightbulb/LED display).

Search for prior posts in this forum on delivering true HD to a projector or other HD display, using a WMV-HD, etc. format.

If you only need to display stills without movement, make your life easier by using something as simple as a full screen JPEG viewer. Just put all your slide JPEGs in one folder and make sure they are sorted the way you want to display them, then crank the Next button to advance....

Depends on exactly what you need to deliver.

Thanks, Coursedesign.

I will spend tonite doing some reading up....

So I can make a mor einformed decision of choice then add it to my quote info.

I have output to large screens, but nothing of this size....so, more studying and learning is good...I am hoping that soon I will feel confident enough to offer sdome help on these forums, too. currently I can help with more IT side of things.

LG

IF they're going for a screen that size then most likely the projector is capable of 1080 or at least 720, even possibly true 2K res, that's one big screen that'll need a lot of lumens.

Realistically I'd start by asking lots of questions, get a contact name for who is supplying the projection gear and then speak to them, find out what they're gearing up to accept, just what they're supplying etc. Will they supply gear for playing out, how should it be encoded.

They may have encoding facilities although Vegas might be able to handle encoding true 2K mpeg-2.

But then at the same time you need to know what res the stills will be i.e. XXXX by YYYY, as said DPI means squat, well not really, do the maths 360inches X 150dpi = 54K x 54K pixels, me thinks not! (I'd like to see it though!!).

Bob.

Good point there, in regards to the screen supplier.
My concern is that according to the prospect, the suplpier stated that the dpi needs to be 150 + and that it will be delivered to the screen via a DVD player.

I will certainly outline the reuest for the screen suplpier and talk directly to him. Often a client does not truly understand the technology.and also sometimes the suplpier of the said technology may not understand it either!

When i used to teach I.T. to undergraduates, I often received thought- provoking scenario quaestions from the lateral thinkers. - of which I am one. I also am a perfectionist in my professional work and if I decide i cannot deliver a quality job i would rather not take it on.

I'll keep you all posted on my final decision and all also if I get selected for the job. It would do wonders for my business if I pull it off!

thanks everyone

LG

"the suplpier stated that the dpi needs to be 150 + and that it will be delivered to the screen via a DVD player."

My appologies but the "supplier" is an idiot. if he wants a DVD to display 150ppi/dpi (pixels per inch/dots per inch) then the screen would have to be 4.8" wide x 3.2" high.

DVD's can only output SD content from a standard DVD player. If it's an WMV-HD or H.264 capable player then you have a little more option, however even then at 150ppi/dpi you'd only be looking at a screen of 12.8" W x 7.2" H at 1920x1080.

It sounds to me like they have a person who knows something about printed graphics and is trying to cross his knowledge of the printed world over into the video world.

I don't know if they sounded like they knew what they were asking for when they asked for it, or if they were questioningly saying is this possible, but I've had folks that think they know what they're talking about and they're only talking out their backside, and that's what it sounds like this guy is doing. I would just simply tell them that what they're asking for doesn't exist in any viable form, and that you can give them the best that they can get.

What kind of zillion dollar projector would you need to project that with (VGA component) any kind of quality at those dimensions? I do that easily with the MY-HD 120 card and a standard HDTV, not a 30 meter screen). I use around 2200 x 2200 stills cropped to 1920.
JJK

A lot of DVD players can playback Jpeg files to SD - that may be what he has in mind. eg: A huge jumbotron is fed SD cropped top and bottom by about 2/3's. Did he mention HD specifically? If he need's Jpegs just prepare them in PhotoShop and deliver files on a data DVD.

well, say they're projecting 30m x 22.5m (pretty close to 4:3). you would need a combined array of projectors using a massively driven "graphics card" if you can even call it that, and some astronomical number of projectors all displaying a portion of the display to create a single grand image. Someone with more time can do the math if they're curious.

Dave

I think the whole 150dpi thing means that they want the images you'd typically get if you scanned something at 150dpi. Say you're working with 4x6 photos, that would result in 600x900 pixel images. Compare that to scanning 4x6 at 72dpi which would only be 288x432. Then again, even 600x900 isn't that great. Maybe he's talking about 5x7 at 150 which would be 750x1050, which is just a hint above 720p HD. Of course, that's the problem with simply saying "dpi" since we don't know the dimensions of the image. Without some other measurement dpi is meaningless.

I certainly don't expect they meant 150dpi over the full 30m screen!