What are the problems related to computer graphics conversion to video?
Three basic problems exist when computer graphics is converted to video: The TV monitor and the PC use different types of pixels – square vs. rectangular. Only specific data resolutions can look “normal” when converted to video – not squeezed or stretched. The computer resolution is usually far higher than video resolution, especially when color is involved. The result of this discrepancy is “smeared” colors on the video side with sharp ones on the computer side. The PC generates a non-interlacing image that has to be re-interlaced (converted to different video fields) when converted to video. The problem is apparent when thin horizontal lines are converted to video – creating a strong flicker effect. To overcome this annoying phenomenon special digital filters are introduced which sometimes lower apparent resolution.
