The invention provides a video rebroadcasting
system and a video receiving
system, and the method comprises the steps: enabling coding equipment in the video rebroadcasting
system to code a received ultra-high-definition video
signal, obtaining an ultra-high-definition video TS flow
signal, and transmitting the ultra-high-definition video TS flow
signal to
signal frequency conversion modulation equipment; enabling the
signal frequency conversion modulation equipment to carry out modulation and
frequency conversion on the received ultra-high-definition video TS
stream signal to obtain a processed TS
stream signal; wherein the signal power amplification equipment is used for carrying out power amplification on the processed TS
stream signal to obtain a power amplification signal; and enabling the
waveguide device to transmit the power amplification signal to a
satellite transmitting antenna, so that the
satellite transmitting antenna transmits the power amplification signal to a
satellite for forwarding use of a
transponder on the satellite. And after the ground receives the signals forwarded by the satellite,
frequency conversion power amplification,
demodulation and decoding are carried out, and ultra-high-definition video signals are recovered to be played or recorded. According to the invention, the transmission efficiency of 8K ultra-high-definition video signals is improved.