Have you ever flipped through your mobile phone album and suddenly a thought flashed through it - how great would it be if these photos could become visual feasts on the large screen in the mall? Last year, a business district in Guangzhou used LED screens to display family albums submitted by citizens, and the daily customer flow soared by 40%, which made more and more people pay attention to the ways of making LED dynamic albums. But novices often get stuck in the first question: What kind of producer should I find for this kind of high-tech thing?

Three most easy pitfalls for beginners to step on

Last month, I encountered a funny and wailing case. Someone spent 38,000 yuan to make a wedding commemorative album and threw it into a screen of mosaics. Later, it was found that the producer used a civilian-grade controller, which could not carry 4K content at all. Here are a few key points:

• ​Pixel Trap​: The screen that claims to support P2.5 pitch may not even reach the P4 effect during actual playback.
• ​​Refresh rate blind spot​: There will be obvious drag on the screen of dynamic albums below 1920Hz
• ​File format pit​: 90% of the crash failures are caused by the failure to convert professional broadcast control formats

There are interesting data sets: the maintenance cost of projects completed by professional manufacturers within three years is 62% lower than that of non-professional teams. Where can I save this money? The main purpose is to avoid the invisible loss of repeated modification of file formats and incompatibility of the device.

Hidden levels in the production process

Last week I visited an automated production base, and the quick disassembly and assembly box that was being assembled on the assembly line opened my eyes. It turns out that reliable production requires five hardcore processes:

1. ​Source file diagnosis and treatment​: Not all pictures are suitable for LED screen display, professional software must be used to analyze pixel density
2. ​Dynamic adaptation​: Automatically adjust the perspective relationship of the screen according to the screen curve (this technology is very awesome now)
3. ​​Brightness Mapping​: The brightness value of indoor and outdoor screens should be controlled in the 1200cd/m² and 5000cd/m² range respectively
4. ​Stress tests​: Simulate continuous playback to check heat dissipation performance
5. ​Delivery training​: Teach customers to update content remotely using their mobile phones

I would like to talk about the second point. Now some high-end screens can automatically adjust the brightness according to ambient light, which is particularly important for album display. For example, the brightness of outdoors in the evening and at noon is more than 10 times different. Photos without this function are like overexposed scraps.

Three questions to ask before you pay out of your own pocket

Recently, I helped my friend check the production plan and found that some details would definitely be regretful if I didn’t ask for them clearly. We recommend that you get rid of these three questions when you meet:
​​"How to deal with the seams of your box?"​​
The correct answer should be to use surface compensation technology, and the pixel error at the joints must be controlled within 0.02mm. There was a tragedy in the industry last year. The seams of the large screen at a brand press conference cut the faces of the character in half, but this link was not done well.

​​"Does burst content insert support?"​​
Now the cutting-edge broadcast control system can switch preset content within 0.5 seconds, and some can upload new photos in real time through mobile APP. But be careful to ask whether there is an additional charge, and some producers lay mines in this regard.

​​"How many people are there in the after-sales team?"​​
The focus is not on the number of people but on the response mechanism. A truly professional will have a 24-hour technical team. If you encounter an emergency such as black screen, you must bring a backup module to the site within 2 hours.

A set of data may subvert cognition: the hardware cost of making LED dynamic albums actually only accounts for 35% of the total expenditure, and the rest is spent on content adaptation and system debugging. So don't be fooled by the gimmick of "ultra-low-priced equipment". The most outrageous quotes you have ever seen, the money saved by the equipment fee is not enough to pay for the transportation costs of two repairs.

Alas, at the end of the day I suddenly remembered something. Last year, a Japanese department store used LED floor tiles screens to perform interactive album exhibitions, but because the waterproofing was not done well, the coke sprinkled by customers was short-circuited. So, you can’t just look at the design capabilities to find a producer, but also to see if they have a complete quality inspection system. Screens that can pass IP65 protection certification are serious.

In fact, there is a new trend in the industry now - cloud photo album service. The producers store the content in the cloud, so customers can update photos at any time and set playback themes for different time periods. This model dilutes the production cost by about 40%, which is especially suitable for customers who want to display it for a long time. However, I would like to remind you that if you choose a cloud service, you must confirm the protection level of the data center and don’t turn precious photos into blackmail for hackers.

After all, making LED dynamic photo albums is like finding a partner. Just looking at the appearance (screen effect) is not enough, and you also have to find out your financial situation (technical strength) and understand your temper (service system). Those who dare to slap the quality inspection report on your face are much more real than those who only brag about painting cakes. After all, no one wants their memories to become a scene of malfunctioning in the mall that flashes a few times, right?

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