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A video may look perfect on a computer monitor but completely different when it is played on an LED sphere. A round logo can become stretched, text may bend, and objects near the top or bottom of the sphere may look compressed.
This does not usually mean there is something wrong with the LED screen.
The main reason is simple: a normal video is made for a flat rectangular surface, while an LED sphere is a three-dimensional curved display.
To make the content look correct, the video must be mapped according to the shape, resolution, and pixel layout of the spherical LED display.
Most standard videos use a rectangular format such as 1920 × 1080 with a 16:9 aspect ratio.
Every pixel is arranged in straight horizontal and vertical lines.
A spherical LED display is completely different. Its pixels follow a curved surface around the entire sphere.
When a standard rectangular video is directly wrapped around this surface, the original image proportions cannot remain the same everywhere. Some areas must be stretched while others are compressed.
Think about a world map and a globe.
A world map can be printed on a flat piece of paper, but wrapping that paper around a ball requires the image to change shape. Spherical LED content faces a similar geometric problem.
This is why proper LED sphere video mapping is necessary.
Stretching is one of the easiest problems to notice.
For example, a circular product image may look slightly oval after being mapped incorrectly. A person’s face can also appear wider or narrower than it should.
The problem becomes more noticeable when the content contains familiar shapes because viewers immediately recognize incorrect proportions.
The top and bottom of an LED sphere are usually more difficult areas for content design.
As the surface becomes narrower toward the poles, a large section of the original image may need to fit into a smaller visual area.
This can cause:
For this reason, important brand information is usually better placed around the main viewing areas rather than directly at the poles.
Text that looks straight on a computer screen may follow the curvature of the sphere after mapping.
This is especially important for advertising applications.
A long company name or slogan can become difficult to read when it extends across a large curved area.
For better results, use short text, simple fonts, larger letters, and carefully selected positions.
Brand logos should also be previewed on a virtual sphere before the final video is exported.
An LED sphere provides a continuous 360-degree display surface.
If the left and right sides of the video do not connect correctly, viewers may notice a visible seam where the content wraps around the sphere.
This is particularly obvious with backgrounds, moving lines, landscapes, clouds, or continuous patterns.
Good spherical content should therefore be designed for seamless wrapping.
Distortion does not only affect static images.
Movement can also look unnatural.
For example, an object moving horizontally across a flat video follows a straight path. On a sphere, the same movement must follow a curved surface.
Without correct spherical mapping, the object may appear to change speed, size, or direction as it travels around the display.
This is why motion should be tested on a 3D sphere instead of only in a flat editing window.
Spherical mapping converts flat visual content into coordinates that match a three-dimensional sphere.
Instead of telling the display:
“Put this rectangular video directly on the screen.”
The mapping system determines where different parts of the image should appear on the spherical surface.
One common approach is equirectangular mapping.
An equirectangular image normally uses a 2:1 format and represents the complete 360-degree spherical surface as a flat image.
However, simply changing a normal 16:9 video to 2:1 does not automatically solve the problem.
The content still needs to match the actual LED sphere.
These two terms are related, but they are not exactly the same.
UV mapping describes how a two-dimensional image is placed onto a three-dimensional model.
Designers can create a virtual sphere in 3D software and use UV mapping to check how graphics, text, and animation will appear on its surface.
Pixel mapping, on the other hand, connects the final content with the physical pixels of the LED display.
A real LED sphere is built from LED modules and controlled through receiving cards and a control system. Its actual pixel arrangement depends on factors such as:
For this reason, there is no single video resolution that works perfectly for every LED sphere.
The correct workflow should begin before the final video is rendered.
Ask the LED display manufacturer for the actual screen information.
Important details include the sphere diameter, pixel pitch, total resolution, pixel layout, and control system.
Do not create the final content based only on the physical diameter.
The content designer should understand how the physical LED pixels correspond to the video canvas.
A correct pixel map helps prevent incorrect image positions, broken graphics, and obvious seams.
Software such as Blender, Cinema 4D, TouchDesigner, or other 3D tools can be used to preview the content.
Place the video or graphics onto a virtual sphere and inspect them from different angles.
Some elements may need to look distorted in the flat source file so that they appear normal after being wrapped around the physical sphere.
This process is often called pre-warping or geometric correction.
Pay special attention to logos, faces, text, circles, and product images.
Check the left-to-right connection of the content.
Then inspect the top and bottom of the sphere.
Do not assume that a video that looks correct around the equator will also look correct near the poles.
A 3D preview is useful, but the physical LED screen should always be the final reference.
Play the content and walk around the sphere.
Look at it from the front, sides, rear, and normal audience viewing distance.
Small mapping adjustments at this stage can greatly improve the final result.
Yes, many LED sphere control systems can play common video formats such as MP4.
But being able to play the file does not mean the content will look correct.
A standard rectangular MP4 may still show stretched images, bent logos, or distorted text.
For simple abstract animations, the distortion may not be very noticeable. For branding, product advertising, faces, maps, and text-heavy content, customized spherical mapping is strongly recommended.
No.
Two LED spheres with the same diameter may still have different resolutions if they use different pixel pitches or module designs.
For example, a fine-pitch sphere contains more pixels than a larger-pitch sphere of the same physical size.
The content should therefore be prepared according to the actual screen resolution and pixel map, not only the sphere diameter.
Content creation and LED hardware should not be treated as completely separate parts of the project.
Before the content team starts final rendering, the LED manufacturer should provide important technical information such as the screen resolution, pixel pitch, control configuration, and mapping layout.
This can reduce repeated editing during installation.
TOOSEN provides customized spherical LED displays for indoor and outdoor applications. Different diameters and pixel pitches are available depending on viewing distance, installation environment, and project requirements.
For projects that require customized sizes or content mapping, the screen structure and playback requirements can be confirmed before production.
You can also view the Sphere LED Display for available diameters, pixel pitches, control options, and other specifications.
Flat videos look distorted on an LED sphere because rectangular content and spherical surfaces use different geometry.
Simply stretching a 16:9 video around the screen cannot fully solve the problem.
Good results require the correct combination of spherical mapping, pixel mapping, content design, geometric correction, and real-screen testing.
Before creating the final video, confirm the actual resolution and pixel layout of the LED sphere. Preview important graphics on a virtual sphere, keep logos and text away from heavily distorted areas, check the 360-degree seam, and test the finished content on the real display.
When the content is designed for the sphere instead of simply placed on it, the LED sphere can deliver a much cleaner and more convincing 360-degree visual experience.
A flat logo is designed for a rectangular coordinate system. When it is wrapped around a curved surface without proper mapping, its proportions can change. Spherical mapping and pre-warping can correct the problem.
There is no universal resolution. It depends on the sphere diameter, pixel pitch, module arrangement, and actual pixel map.
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