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.
- Watch out for positioning at full pixels for rectilinear shapes.
- Use light colours on a dark background to reduce light radiation and achieve optimal contrast.
We often use the following rule of thumb to determine the minimum size of 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 format for images
- 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)