Nowadays, LED displays are widely applications, such as church, office, highway, buildings, stations, airports, exhibitions, stage, and concerts and so on. With the development of LED display technology, LED displays are becoming more and more lightweight and high pixels. And stage performance is constantly looking for ways to engage and interact with audiences. LED displays are playing an increasingly prominent role in inspiring engagement and events. Embracing a more visual approach means that many event venues, stages around the world are now incorporating LED displays into their staging productions as a tool to engage audiences, share information, and even influence crowds.
Not only does LED screen provide a dynamic way to communicate for events, but because of their adaptable nature, it can also be easily rearranged to fit the particular needs of the stage. However, just getting a bunch of LED panels doesn't guarantee you perfect and uniform image quality - it's up to the video processors to ensure that the information is delivered as intended.
VDWALL LVP615 Connections Diagram
What is video processor?
Video processor is a hardware which can process different video signals into signals that screens can display. It is the key of delivering perfectly uniform and beautifully colored LED screens, and ensures that your content plays perfectly on the LED video wall, using features such as scaling and precise content color adjustment, as well as correcting visible gaps or blending batch problems on the LED panel itself.
Why do we use video processor when using LED display?
Video processing occurs throughout the video signal chain - from the cameras, video playback and media servers on the input side, to the video switchers and screen management systems, to the LED video walls on the output side.
The ultimate goal of video processing is to deliver visuals with more realistic colors and unprecedented brightness, evoking a more personalized experience and lasting impact for each audiences. If the LED screen looks mismatched or patchy, if the image lags behind the live arrangement or shows strange colors, then the LED display becomes a distraction rather than the enhancement tool it is intended to be.
Without video processors, it is nearly impossible for an LED video wall to display content as designed - "good enough" is the best case scenario.
What are the functions of Video Processors?
1. Multiple Signal Input.
Video processors support multiple signal input such as DVI, VGA, HDMI, CVBS, YPbPr, DP, SDI etc.
2. Seamless Signal Switch with Different Effects.
Video processors can process several signals simultaneously when there are multiple signal accesses, and flexibly switch between several signals quickly. Switch effects have fade-in and fade-out, left cross and right cross, down cross and up cross etc.
3. Video Format Conversion.
Multiple signals input means multiple videos format. In short, video processors can convert analog signal video formats and digital signal video formats to digital signal video formats that LED screen can display.
4. Video Resolution Adjustment.
Video processors can adjust the input videos resolutions to match the LED display resolution easily. It doesn’t require any software knowledge. It can be done by pressing buttons.
5. Color Gamut Conversion.
Color gamut refers to the range of colors that can be expressed by a specific equipment, such as screens, monitors, printers, etc. The size of the color gamut space of the device is related to the device, medium and observation conditions. The larger the color gamut space of the device, the more colors it can reproduce.
The color gamut space of LED displays is larger than other input signals. Therefore, if the color gamut space of other input signals directly used to control the luminescence of the three primary colors of LEDs in the LED screens, it will produce color deviation and seriously affect the performance of LED display screen. The video processor is required to complete the conversion of color gamut space.
6. Video Details Enhancement.
The qualities of videos in different signals are different. And the resolutions between videos and screens are different. The video processor can use advanced algorithms to modify the signals with different qualities, perform a series of processing such as de-interlacing, edge sharpening, motion compensation, etc., to enhance the details of the video and improve the video quality. Then videos can be displayed on LED screens perfectly.
7. Gray Scale Enhancement.
Most input video signals are 8bits or10bits gray scale. But most LED screens are 12bits, 14bits or even 16bits gray scale. Video processors can increase the gray level of the input signals to match the LED displays.
8. Noise Reduction.
Each video signals has noise which mainly comes from the compression noise of the video signal and the random noise of the system itself. The noise in these signals will affect the viewing experience of the LED displays. Video processors can suppress the noise and minimize the interference of the noise on the video quality itself.
9. Video Zooming.
Sometimes we will zoom in or zoom out the video while displaying on LED screens. But the video will be distorted when we zoom in. Video processors can zoom in and zoom out videos easily by press some buttons, and the highest magnification is 10x. And video processor can enhance the details in videos to reduce the distortion while zooming in.
Most video signals use interlaced scanning technology to increase resolutions and reduce the bandwidth. And LED displays use progressive signal scanning technology. Video processors will use de-interlacing technology which can eliminate the scan line effect that exists in live broadcast and videos.
11. Multiple Screens Mode.
Video processors support multiple screens display. It can display 2 or more signals input in same LED screens as same time.
12. Multiple Video Signals Splicing.
Video processors support multiple signals splicing. It can easily splice multiple video signals then display high resolution videos in LED screens.
13. Video Signals Synchronous.
With video signals synchronous, video processors ensure that each input signals display synchronously so that the whole splicing screen is completely synchronized.
14. Motion Compensation.
Video processors support motion compensation to reduce the jaggies in videos which are displayed in LED screens.
15. Local Monitor mode.
You can monitor the video output at any time through the monitor and no longer need to pay attention to the big LED video wall. The monitor will simultaneously display same videos which is displayed in LED video wall. You can also preview the output before sending signals to LED screens.
How to choose right video processors for LED displays projects?
We will recommend video processors based onyour projects or your requirements.