What do you mean by careful?

Card point means to get stuck in time, which is mostly used in dance, singing and other fields. In hip-hop music, the point is the rhythm point, and some rhythms will not change with the ups and downs of music. Card point refers to doing every movement according to the rhythm of music in dance.

Video refers to various technologies that capture, record, process, store, transmit and reproduce a series of still images in the form of electrical signals.

When the continuous image changes more than 24 frames per second, according to the principle of visual persistence, the human eye cannot distinguish a single static picture; It looks like a smooth and continuous visual effect, and such a continuous picture is called a video.

Video technology was originally developed for TV system, but now it has developed into various formats to facilitate consumers to record videos.