In simple thoughts TV screen's scan or refresh rate is not match with scan or refresh rate (rate at which screen data refreshes) of filming equipments (eg.camera,mobile phones).
For example-Tv screen refreshes at speed of 60fps but on a mobile phone the refresh rate is only 25fps or 30fps.
A digital/video camera is using a sensor which has the certain amount of pixels and it is capturing something that doesn't have matching number of pixels.
Another reason is that the understanding of phosphorus dots by human eyes and camera sensors are different.
Some Devices control the flicker of screen.Generally a digital signal is sent to the monitor so that it will sync with the camera.
For example-Tv screen refreshes at speed of 60fps but on a mobile phone the refresh rate is only 25fps or 30fps.
A digital/video camera is using a sensor which has the certain amount of pixels and it is capturing something that doesn't have matching number of pixels.
Another reason is that the understanding of phosphorus dots by human eyes and camera sensors are different.
Some Devices control the flicker of screen.Generally a digital signal is sent to the monitor so that it will sync with the camera.
