Issue #9/2004 LED Video Screens On The MoveIn the world of show business and corporate events, large LED screen video presentations have come to be a critical part of how these events are seen by their audiences. In most of these entertainment instances, the video screens are provided from various audio/visual rental companies who handle the video screen prep, the installation and the operation of the video displays. Because LED video screens offer very bright, easily viewable images, they are very desirable for outdoor, daytime events as they are for indoor and evening coverage.
Although the LED video modules are a separate category of use than the mobile video truck operations, the video modules may sometimes be provided as a companion video system as part of a truck video screen rental service. GoVision's president Chris Curtis, who operates a mobile truck fleet, noted that certain audio visual set-ups may require both types of screens (a master screen with satellite screens built up from video panels). In some cases, Curtis said, "many events can be supplied with either the mobile video truck or the modular stackable screens. However, it is clear that video screen customers have their preferences, some absolutely want a truck, and others feel the opposite and definitely prefer the video modular stackables on their stage or at their event."
Video modular screens are scalable and can be built in many sizes or shapes to meet specialized staging needs in different budget ranges. With a flair of the dramatic, indoor video screens can be chained to overhead pulley systems to be moved up and down or around as part of the presentation, usually for spectaculars in fashion shows or music concerts. LED video screens can also be built to conform to standard or HDTV aspect ratios. LED video modules also have the advantage of being moved into smaller spaces where a permanent screen just might not be practical, such as a stage or inside a large tent. Setting up a video module screen is very labor intensive. It not only requires gathering the video modules together and transporting them to the event, the screens must then be off-loaded, brought to the designated video spot, assembled and then prepped for its display presentation. While a few A/V companies may still follow this route in their staging set-ups, one company has combined the best of modular and mobile in setting up their indoor LED screens.
"Once on site, the screen is rolled to its designated location and stabilized by its self-leveling base arms," said Nicolaou. "The screen is then raised to the desired height for presentation. An average modular screen is composed of either 16 LED video modules in a 4:3 (standard television) aspect ratio or 12 LED video modules in a 6:4 (widescreen format) aspect ratio. The LED-based truss systems are typically used by MDS for audiences of 500 - 30,000 people. We currently have four truss systems available for rental." All MDS video modules are manufactured by Lighthouse, with both 6mm and 10 mm pitch resolution.
Most video display trucks contain an on-board video production suite which offers a complete audio-visual 'command center' with an editing bay that includes switching, editing and playback capabilities. Most trucks will also have a television camera package to "go live" and provide real-time coverage during the event with immediate playback through their large format video screen. As for the benefits of mobile video trucks, LED video screens are easily viewed in daytime conditions. Once arriving on-site, a video truck with minimum production requirements can be set up within the hour. On touring events with multiple locations (a political rally or a music concert), trucks can be packed up and simply moved to a new site where the screen can be unfolded, raised into position and prepared for display. Three full service mobile video screen providers interviewed for this article all offer similar audio visual services, each providing a small fleet of video based trucks. All of the mobile video companies offer video trucks that are self-contained and not only provide a hydraulically ready-to-view video screen, but also offer a complete on-board video production suite to mange the client's event coverage. Go Visions (Keller, TX) fleet utilizes Barco (Kortrijk, Belgium) video screens and has a four truck fleet. This includes its GOBIG truck (two trucks in use, a third available by September, 2004) with each video truck including a 9 foot by 16 foot video screen (offers a 10 mm pitch at a brightness level of 5000 nits) and its own video production facility. For really big shows, there is the GOBIGGER (one truck in use) which is a video truck containing an 18 foot high by 32 feet wide LED video screen and is mounted on a trailer. To match a bigger screen, the pitch is 14 mm, with a 5000 nits brightness level. Go Vision president Chris Curtis, acknowledges that his video screen trucks "operate throughout the United States with major markets including events (fairs, festivals and concerts), outdoor sporting events and conferences and trade shows. While there is some seasonal variation depending on the market, our video trucks just about operate all year long supplying video screens to those who need to see the big picture of their event." Michael Cooper, president of Daktronics SportsLink, which operates a large mobile truck fleet, observed there are still many sporting and entertainment events without video display use, "Those event organizers quickly see that a video screen does make a difference by creating more visual excitement and entertainment value for the event." Once a decision is made to acquire a mobile video screen, Cooper said there are several factors for selecting the proper mobile screen size, including the size of the audience and the viewing distance which has to do with the size of the venue. Rental of a particular truck is determined by the number of days in use, travel distance and scope of work in how the truck is used." SportsLink major markets are outdoor sporting events (with about 65% - 70% coverage), and that is followed by fairs and festivals (with about 25% coverage). The rest is specialized such as religious events and political campaigns. To manage this event coverage, SportsLink maintains a fleet of 10 video trucks, all using ProStar video screens with sizes ranging from 12 feet by 16 feet (at a 16mm pitch) to a 22 foot by 30 foot video screen (at a 23mm pitch). All screens are rated at 7000 nits and can support any event from a small college sport game to a large professional sports stadium. To cover all bases, in this case, on mountain tops, Sportslink also has a dedicated ski barge with its own Snow Cat to pull a screen upside a mountain for viewing various winter ski and snow board competitions.
The other half of its fleet, its S-series (two trucks) is used for large scale events that host around a 10,000 person audience. This LED video screen (17 feet by 23 feet) is large enough that it? placed on its own flatbed with several hydraulic units. First the screen is unfolded into its final shape and once secured is lifted up into its final presentation position. Screen rated at 19mm pitch and maintains a brightness level of 7000 nits. Maximum viewing distance for audiences is 750 yards. The second LED video screen is even larger at 22 feet by 28 feet and is brought to large events on a trailer and usually hoisted into a viewing position with a crane. Its screen is rated at 25mm pitch and maintains a brightness level of 7000 nits. Maximum viewing distance for audiences is 1000 feet. With mobile and modular LED display screens becoming more and more available, video coverage is wherever the customer wants it to be. Outdoor video has become a mirror of entertainment and cultural and trade show endeavors and event sponsors seem intent on placing these video mirrors where large groups of people gather. Perhaps even in an event you may be attending soon. Louis M. Brill is a journalist and consultant for high-tech media communications. Copyright ©1996-2010 VK E-mail: screens@screens.ru
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