Content guidelines
graphic
LED displays
How should it be made up?
The following specifications give the best results:
- Create media exactly at display resolution.
- Enlarge text and image for best readability.
- Note the positioning at full pixels for rectilinear shapes.
- Use light colours on a dark background to reduce light emission and achieve optimal contrast.
Text size
We often use the following rule of thumb to determine the minimum size of the text:
height in cm × 5 = reading distance in m
See the table for some examples.
| Character height | readable until |
|---|---|
| 5 cm | ca. 25 m |
| 10 cm | ca. 50 m |
| 20 cm | ca. 100 m |
| 40 cm | ca. 200 m |
| 80 cm | ca. 400 m |
File formats
File format for images
Images are best saved in the following file format:
- PNG in 24-bit RGB
- Saving in JPEG is not recommended due to loss of quality.
File format for video and animation
Video is supported in following formats:
- MPEG-4 in standard H.264 (MP4)
- MPEG-1/2 (MPG)
- QuickTime and Windows Video in divers codecs (MOV, AVI, WMV)
Where possible, use the following specifications:
- Frame rate: 25, 30 of 60 fps
- Field order: Progressive
- Ratio: Square pixels
- Bit rate: ±3 Mbps (variable/constant)
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