ceecrb1 Posted January 25, 2009 Share Posted January 25, 2009 Our new LED screen arrived on friday!!! The system ONLY has DVI input, and its getting to me that its a lot of faf to take a whole computer with a video capture card just to connect composite or s-video signals (which, really, is the most common connection we use). I've seen a few pal-dvi convertors, including one as cheap as £40(ish) on ebay.. Has anyone had any use of them? is the DVI signal solid, reliable and clean?Specifically, anyone used them for this puropose? Ta muchly! Link to comment Share on other sites More sharing options...
Toxopholist Posted January 26, 2009 Share Posted January 26, 2009 What you need it a scan converter to take your analogue, I guess pal signal and convert it to the DVI Digital signal at an appropriate resolution for your screen processor, it would be useful to know what screen you have. A popular choice to is the Folsom Image Pro HD as it will take pretty much any kind of video in, provide an appropriate output on DVI for your screen, and allow you to scale the image to fit your screen whatever configurations you have it in. It will also allow you a limited amount of switching between sources... Its a bit far from the £40.00 you quote, but a nice bit of kit... Some idea of the screen you are trying to control would give a better idea of how much control you would need on your converter, also the kind of configuration you use your screen in, whether I is one size, and therefore scaling is not an issue, or you use I in a modular fashion and need more flexibility... More info please! HTH Charlie Link to comment Share on other sites More sharing options...
Nick Mawer Posted January 26, 2009 Share Posted January 26, 2009 You are actually looking for a video scaler - (this debate has been had before - but many people would recognise a scan converter as going from DVI - Composite as opposed to the other way round). I could not recommend a product costing £40, $40 or even €40. I am sure that in addition to looking at the Folsom product, you might want to look at the following Kramer products; http://www.kramerelectronics.co.uk/indexes...p?name=VP-725DS - £1499 + VAT listhttp://www.kramerelectronics.co.uk/indexes...?name=VP-725DSA - £1999 + VAT listhttp://www.kramerelectronics.co.uk/indexes...asp?name=VP-727 - £2999 + VAT list Just make sure that the scaler that you choose is actually capable of supporting the native resolution of your LED wall. KR Nick Link to comment Share on other sites More sharing options...
ceecrb1 Posted January 26, 2009 Author Share Posted January 26, 2009 Well I've had a bit of a brain fart... I'll HAVE to use a computer for this system, as the LED Screen only displayes a part of the "desktop" and the video image must be framed to that part....Therefore a convertor which directly converts "full screen" video to "full screen" dvi wont work.... I think I'll just have to rackmount a laptop or computer.. still seems a bit much just to get a video signal in... They are from a chinease company called GLUX, they say the led screens used in the roof of the "birds nest" in the olymipcs opening ceremony were theirs..... aye aye aye my boss and its buying methods....................................... less said the better.... Link to comment Share on other sites More sharing options...
smalljoshua Posted January 26, 2009 Share Posted January 26, 2009 There weren't any LED screens used in the Roof. It was all rear projection.* According to the L&Si Article on the Ceremony Josh Link to comment Share on other sites More sharing options...
peternewman Posted January 26, 2009 Share Posted January 26, 2009 I'll HAVE to use a computer for this system, as the LED Screen only displays a part of the "desktop" and the video image must be framed to that part....Therefore a converter which directly converts "full screen" video to "full screen" dvi wont work....That sounds very bizarre indeed, but fair enough. Anyway I know some of the scalers allow some degree of control as to where they are positioned towards the edge of the output, in the worse case any kind of scaler that supported picture in picture should allow you to do it entirely in hardware, which should benefit from more reliability and less delay, but at a price of course. I guess Nick should be able to confirm which Kramer kit will fit the bill and others can probably suggest other options. Link to comment Share on other sites More sharing options...
ceecrb1 Posted January 26, 2009 Author Share Posted January 26, 2009 Well.. price wise, it looks like were gonna get ourselves a "cd dj" type rack where tehre are some rackmount points at the bottom and an open section at the top (normally for a mixer)..in the mixers position we'll mount (somehow) a laptop...done.. fixed and "small" and cheaper... theres a war crisis on dont you know! Link to comment Share on other sites More sharing options...
henny Posted January 26, 2009 Share Posted January 26, 2009 There weren't any LED screens used in the Roof. It was all rear projection.* According to the L&Si Article on the Ceremony Josh I think you will find it was front projection from across the stadium Link to comment Share on other sites More sharing options...
Pete McCrea Posted January 26, 2009 Share Posted January 26, 2009 The way to do this properly is as Toxopholist says' and is to put a scaler in there - ImagePRO being my recommendation too due to the low latency and flexibility of the unit. That way it will scale pretty much any image to the available pixel space of the screen. There might be a crisis on, but there's doing it cheap, and there's doing it right. Plus assuming your going to put live footage to screen, a 'cheap' laptop and capture card is likely to start cranking up the frame delay so you'll have issues with the lip sync. Link to comment Share on other sites More sharing options...
ceecrb1 Posted January 26, 2009 Author Share Posted January 26, 2009 The way to do this properly is as Toxopholist says' and is to put a scaler in there - ImagePRO being my recommendation too due to the low latency and flexibility of the unit. That way it will scale pretty much any image to the available pixel space of the screen. There might be a crisis on, but there's doing it cheap, and there's doing it right. Plus assuming your going to put live footage to screen, a 'cheap' laptop and capture card is likely to start cranking up the frame delay so you'll have issues with the lip sync. Trust me your preaching to the educated and converted........ want to try having a go with my extremely head-strong boss??? little by little....... Link to comment Share on other sites More sharing options...
djw1981 Posted January 26, 2009 Share Posted January 26, 2009 aye aye aye my boss and its buying methods....................................... less said the better.... Trust me your preaching to the educated and converted........ want to try having a go with my extremely head-strong boss??? little by little....... You don't have much luck with managers do you....... Link to comment Share on other sites More sharing options...
slim_mcslim Posted January 26, 2009 Share Posted January 26, 2009 as the LED Screen only displayes a part of the "desktop" and the video image must be framed to that part.... so just so this is straight, there is no external LED wall controller, just a computer presumably running some kind of control software connected to the wall on cat5/rs232 and then an image which also comes from the same pc, but the wall only looks at a small section of the pc output (presumably some 320x240 window) P. Link to comment Share on other sites More sharing options...
Ynot Posted January 27, 2009 Share Posted January 27, 2009 Sounds to me like someone's spent a lot of dosh on a pretty, fancy piece of kit but didn't check/can't be ar$ed to spend more on getting the interface kit sorted as well... Sorry, but can't help NOT feeling sorry for your firm... Smacks of pi$$ poor planning to me. Link to comment Share on other sites More sharing options...
ceecrb1 Posted January 27, 2009 Author Share Posted January 27, 2009 Sounds to me like someone's spent a lot of dosh on a pretty, fancy piece of kit but didn't check/can't be ar$ed to spend more on getting the interface kit sorted as well... Sorry, but can't help NOT feeling sorry for your firm... Smacks of pi$$ poor planning to me. spot on. its still the original boss... awaiting my official changeover............ Link to comment Share on other sites More sharing options...
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